The present invention is directed to the use of a device D in agricultural applications, forestry or home and garden applications, wherein said device D is used for dispensing in the air, as a vapor, an active ingredient that is liquid at ambient temperature,
In agricultural applications, a plurality of types of active ingredients can be used to achieve certain effects. For some types of active ingredients it is important that small amounts of such active ingredient are dispensed over longer periods of time.
For example, semiochemicals substances, such as pheromones, are widely used as a mild way of controlling certain insects. Known methods of applying such semiochemicals involve providing containers containing such semiochemicals, where such containers are often made of polymeric material and contain a membrane that allow for constant release of the semiochemicals over time. The drawback of this method is that a high number of these containers need to be distributed in the field to achieve sufficient distribution of the semiochemicals in the field. For example, for the application in vineyards, up to 500 of such containers are typically distributed in the vineyard per hectare in the beginning of the growing season and collected again after the season. Besides the amount of plastics that is being used therefore, this results in significant for labor and other resources.
It remains a challenge to dispense active ingredients in small amounts such that the amount dispensed is sufficiently constant over time and can be adjusted to the active ingredient, the environmental conditions (such as the weather), the crop and the pest.
It was therefore the objective of the present invention to provide a method for applying active ingredients in agricultural applications that address these challenges.
The objective has been achieved by the use of a device D in agricultural applications, forestry or home and garden applications, wherein said device D is used for dispensing in the air, as a vapor, an active ingredient that is liquid at ambient temperature,
Said active ingredient typically has a boiling point of between 30° C. and 400° C. at atmospheric pressure. Preferably, said active ingredient has a boiling point of between 140° C. and 350° C. at atmospheric pressure.
In one embodiment, said active ingredient has a viscosity greater than 1 cPa.s at 25° C. and less than 1 cPa.s at 60° C. Preferably, said active ingredient has a viscosity greater than 1 cPa.s at 25° and less than 1 cPa.s at 60° C. Viscosities herein are determined according to CIPAC MT 192 by using a rotational viscometer (apparent viscosity determined at shear rate of 100 s−1).
Said active ingredient can for example be a repellent or a semiochemical substance (such as a pheromone, an allomone or a kairomone, in each case of natural or synthetic origin).
In one preferred embodiment, said active ingredient is a semiochemicals substance.
In one especially preferred embodiment, said active ingredient is a pheromone.
In one preferred embodiment, said active ingredient is selected from
In one preferred embodiment, said active ingredient is selected from the above list from which (8E,10E)-8,10-Dodecadien-1-ol and (7E,9Z)-7,9-Dodecadien-1-ol acetate have been removed.
In one preferred embodiment, said active ingredient is selected from the following list
In one preferred embodiment, said active ingredient is selected from the above list from which (8E,10E)-8,10-Dodecadien-1-ol and (7E,9Z)-7,9-Dodecadien-1-ol acetate have been removed.
In one embodiment, said active ingredient is selected from the preceding list from which 8E,10E)-8,10-Dodecadien-1-ol, (7E,9Z)-7,9-Dodecadien-1-ol acetate, extract of Chenopodium ambrosiodes; Neem oil; and Quillay extract are excluded.
When mixtures of different isomers or of different pheromones are used, these are typically used in a mass ratio of 1:100 to 100:1, preferably 1:10 to 10:1.
In case of ternary or higher mixtures such ration shall apply with respect to each combination of the mixing partners.
In one embodiment, said active ingredient is selected from
In one embodiment, said active ingredient is selected from
In one preferred embodiment, said active ingredient is selected from
In one preferred embodiment, said active ingredient is selected from the above list from which (8E,10E)-8,10-Dodecadien-1-ol and (7E,9Z)-7,9-Dodecadien-1-ol acetate have been removed.
In one preferred embodiment, said active ingredient is selected from
(E,Z,Z)-3,8,11-Tetradecatrienyl acetate;
In one preferred embodiment, said active ingredient is selected from the above list from which (8E,10E)-8,10-Dodecadien-1-ol and (7E,9Z)-7,9-Dodecadien-1-ol acetate have been removed.
In one embodiment, said active ingredients are applied as pure substances. In one embodiment, said active ingredients are used as formulations containing auxiliary components. For examples, said active ingredients, especially pheromones, may contain one or more stabilizers such as BHT (also known as Butylhydroxytoluol, or 2,6-Di-tert-butyl-p-kresol).
In one embodiment, device D is used according to the invention for controlling insects.
In one embodiment, device D is used according to the invention to disrupt the mating of insects.
In one embodiment, device D is used according to the invention for efficiently combating insects from the sub-order of Auchenorrhyncha, e.g. Amrasca biguttula, Empoasca spp., Nephotettix virescens, Sogatella furcifera, Mahanarva spp., Laodelphax striatellus, Nilaparvata lugens, Diaphorina citri;
Lepidoptera, e.g. Helicoverpa spp., Heliothis virescens, Lobesia botrana, Ostrinia nubllalis, Plutella xylostella, Pseudoplusia includens, Scirpophaga incertulas, Spodoptera spp., Trichoplusia ni, Tuta absoluta, Cnaphalocrods medialis, Cydia pomonella, Chilo suppressalis, Anticarsia gemmatalis, Agrotis ipsilon, Chrysodeixis includens;
True bugs, e.g. Lygus spp., Stink bugs such as Euschistus spp., Halyomorpha halys, Nezara viridula, Piezodorus guildinii, Dichelops furcatus;
Thrips, e.g. Frankliniella spp., Thrips spp., Dichromothrips corbettii;
Aphids, e.g. Acyrthosiphon pisum, Aphis spp., Myzus persicae, Rhopalosiphum spp., Schizaphis graminum, Megoura viciae;
Whiteflies, e.g. Trialeurodes vaporariorum, Bemisia spp.;
Coleoptera, e.g. Phyllotreta spp., Melanotus spp., Meligethes aeneus, Leptinotarsa decimlineata, Ceutorhynchus spp., Diabrotica spp., Anthonomus grandis, Atomaria linearia, Agriotes spp., Epilachna spp.;
Flies, e.g. Delia spp., Ceratitis capitate, Bactrocera spp., Liriomyza spp.; Coccoidea, e.g. Aonidiella aurantia, Ferrisia virgate;
Anthropods of class Arachnida (Mites), e.g. Penthaleus major, Tetranychus spp.;
Nematodes, e.g. Heterodera glycines, Meloidogyne sp., Pratylenchus spp., Caenorhabditis elegans.
In one embodiment, device D is used according to the invention to control one or more type of insects listed in the following table:
Acrolepiopsis
assectella
Adoxophyes
honmai
Adoxophyes
orana
Adoxophyes
orana
fasciata
Adoxophyes
reticulana
Adoxophyes sp
Agrotis
segetum
Amyelois
transitella
Anarsia
lineatella
Anthonomus
grandis
Aonidiella
aurantii
Archips
argyrospila
Archips
breviplicanus
Archips
fuscocupreanus
Archips
podana
Archips
rosana
Argyrotaenia
citrana
Argyrotaenia
velutinana
Ascotis
selenaria
cretacea
Busseola
fusca
Cadra
cautella
Campylomma
verbasci
Carposina
sasakii
Chilo
suppressalis
Choristoneura
fumiferana
Choristoneura
rosaceana
Choristoneura
rosaceana
Conophthorus
coniperda
Costelytra
zealandica
Cryptoblabes
gnidiella
Cryptophlebia
leucotreta
Ctenopseustis
herana
Ctenopseustis
obliquana
Cydia
fagiglandana
Cydia
nigricana
Cydia
pomonella
Cydia
splendana
Cydia
strobilella
Cydia
trasias
Cylas
formicarius
Cylas
puncticollis
Dasychira
plagiata
Dermacentor
variabilis
Diabrotica
barberi
Diabrotica
undecimpunctata
howardi
Diabrotica
virgifera
virgifera
Dioryctria
amatella
Dioryctria
disclusa
Dioryctria
merkeli
Diparopsis
castanea
Dysaphis
plantaginea
Earias
insulana
Earias
vittella
Ectomyelois
ceratoniae
Elasmopalpus
lignosellus
Enarmonia
formosana
Endopiza
viteana
Eoreuma
loftini
Ephestia
kuehniella
Epichoristodes
acerbella
Epiphyas
postvittana
Episimus
argutanus
Eucosma
notanthes
Eucosma
sonomana
Eupoecilia
ambiguella
Euproctis
pseudoconspersa
Eurygaster
integriceps
Euxoa
messoria
Euxoa
ochrogaster
Euzophera
pinguis
Exomala
orientalis
Grapholita
funebrana
Grapholita
molesta
Grapholita
prunivora
Helicoverpa
armigera
Heliothis
maritime
adaucta
Heliothis
virescens
Heliothis
zea
Homona
magnanima
Ichneumonoptera
chrysophanes
Keiferia
lycopersicella
Lobesia
botrana
Lymantria
dispar
Lymantria
monacha
Lymantria
obfuscata
Malacosoma
disstria
Mamestra
brassicae
Neodiprion
sertifer
Nezara
viridula
Orgyia
antiqua
Orgyia
leucostigma
Orgyia
pseudotsugata
Ostrinia
furnacalis
Ostrinia
nubilalis
Palpita
unionalis
Pammene
rhediella
Pandemis
heparana
Pandemis
limitata
Pandemis
pyrusana
Pectinophora
gossypiella
Pectinophora
scutigera
Phthorimaea
operculella
Phyllocnistis
citrella
Phyllonorycter
ringoniella
Planococcus
ficus
Planotortrix
octo
Platynota
flavedana
Platynota
idaeusalis
Platynota
stultana
Platyptilia
carduidactyla
Plodia
interpunctella
Plutella
xylostella
Prays
oleae
Pseudoplusia
includens
Quadraspidiotus
perniciosus
Rhopobota
naevana
Rhyacionia
buoliana
Rhyacionia
frustrana
Rhyacionia
rigidana
Rhyacionia
zozana
Scirpophaga
incertulas
Sesamia
nonagrioides
Sitotroga
cerealella
Sparganothis
sulfureana
Sparganothis
sulfureana
Spilonota
ocellana
Spodoptera
exigua
Spodoptera
frugiperda
Spodoptera
littoralis
Spodoptera
litura
Synanthedon
myopaeformis
Synanthedon
pictipes
Synanthedon
scitula
Synanthedon
tipuliformis
Tecia
solanivora
Tetranychus
urticae
Thaumetopoea
pityocampa
Thaumetopoea
wilkinsoni
Thyridopteryx
ephemeraeformis
Trichoplusia
ni
Trichoplusia
oxygramma
Trigonotylus
caelestialium
Tuta
absoluta
Vitacea
polistiformis
Zeiraphera
diniana
Zeuzera
pyrina
In one embodiment, device D is used according to the invention to control one or more type of insects from the order of Lepidoptera, Acarina, Coleoptera, Heteroptera, Homoptera, Diptera or hemiptera.
Preferably, device D is used according to the invention to control one or more type of insects from the order Lepidoptera.
The term “agricultural application” shall include crop protection, non-crop and forestry applications including pest, weed and disease control, plant growth regulation, plant health improvement, This includes inter alia applications in agricultural food production, plant breeding, nursery applications.
Crop agricultural uses include agricultural uses indoor and outdoor, e.g. in the field and in greenhouse or nursery applications.
Non-crop agricultural uses includes uses for the consumer market in home and outdoor applications, for the park and open spaces maintenance market, to the extent they rely on the dispensing of repellants or semiochemical substances.
The term home and garden shall include inter alia the treatment of plants, including ornamental plants like trees or flowers, golf courses. It also includes repelling insects to the extent it relies on the dispensing of repellants or semiochemical substances.
In one embodiment, device D is used according to the invention to protect agricultural crops.
In one embodiment, device D is used according to the invention to protect at least one of the following crops: fruits (e.g. pomes, stone fruits, or soft fruits, e.g. apples, pears, plums, peaches, quince, nectarines, dates, drupes, almonds, cherries, papayas, strawberries, raspberries, jujube, litchi, jackfruit, honeydew, currant, carambola, eggfruit, blackberries or gooseberries); blackheaded fruit; cereals(e.g. barley, wheat, corn, field corn, rice, oats, sorgum); olives, coconut, cocoa beans, castor oil plants, oil palms, ground nuts, cucurbits(e.g. squashes, pumpkins, cucumber or melons); citrus fruit (e.g. oranges, citrus, lemons, grapefruits or mandarins); vegetables (e.g. eggplant, spinach, lettuce (e.g. iceberg lettuce), turnips, allium vegetables (e.g. leek, onion); chicory, brassicas/cole crops(e.g. cabbage), asparagus, cabbages, carrots, onions, garlic, leeks, tomatoes, tuber crops (e.g. potatoes) , fruiting vegetables (e.g. pepper, eggplant, tomatoes, cucurbits or sweet peppers); lauraceous plants (e.g. avocados, cinnamon, or camphor); beans; tobacco; nuts (e.g. walnuts, macadamia); pistachios; coffee; tea; bananas; vines or woody wines(e.g. grapes); oilseed crops (e.g. Canola, rapeseed, oilseed rape, raps, groundnuts, soybeans, sunflower);beet; sugarbeets; saccharum (e.g. sugar cane); fiber crops (e.g. cotton, flax); flowers (e.g. ornamental flowers); hop; sweet leaf (Stevia); natural rubber plants or ornamental and forestry plants, shrubs, broad-leaved trees or evergreens, eucalyptus; turf; lawn; trees; grass.
According to the invention device D can used to protect during the growing of such crops or post harvest, e.g. during storage of the harvested crops.
In one embodiment, device D is used according to the invention for protecting wooden materials e.g. trees, board fences, sleepers, frames, artistic artifacts, etc. and buildings, but also construction materials, furniture, leathers, fibers, vinyl articles, electric wires and cables etc. from ants, termites and/or wood or textile destroying beetles, and for controlling ants and termites from doing harm to crops or human beings (e.g. when the pests invade into houses and public facilities or nest in yards, orchards or parks).
In one embodiment, device D is used according to the invention for controlling the following pests on the following crops:
Cydia
pomonella
Grapholita
lobarzewskii
Adoxophyes
orana
Eriosoma
lanigerum
Dysaphis
plantaginea
Panonychus
ulmi
Phlyctinus
callosus
Cosmopolites
sordidus
Radopholus
similis
Meloidogyne spp
Drosophila
suzukii
Plutella
xylostella
Pieris
brassicae
Brevicoryne
brassicae
Delia
radicum
Trips
tabaci
Slugs
Psila
rosae
Meloidogyne sp.
P. penetrans sp.
Pemphigus
Rhopalosiphum
padi
Metopolophium
dirhodum
Sitobion
avenae
Sitodiplosis
mosellana
Contarinia
tritici
Oscinella
frit
Delia
coarctata
Agromyza spp
Geomyza
tripunctata
Chlorops
pumilionis
Oulema
melanopus
Oulema
lichenis/gallaeciana
Psammotettix
alienus
Scutigerella
immaculata
Tipula
paludosa & oleacera
Cnephasia
Pumicana
Zabrus
tenebrioides
Cephus
pygmaëus
Calamobius
filum
Pratylenchus sp.
Heterodera
avenae
Deroceras
reticulatum
Arion
hortensis
Rhagoletis
cerasi
Drosophila
suzukii
Myzus
cerasi
Ceratitis
capitata
Aonidiella
aurantii
Pseudococcus
citri
Panonychus
citri
Dialeurodes
citri
Eutetranichus
banski
Eutetranichus
orientalis
Phyllocnistis
citrella
Diaphorina
citri
Trioza
erytreae
Sahlbergella
singularis
Distantiella
theobroma
Rhopalosiphum
padi
Metopolophium
dirhodum
Sitobion
avenae
Ostrinia
nubilalis
Sesamia
nonagrioides
Diabrotica
virgifera
Agriotes sp.
Zygidinia
scutellaris
Laodelphax
striatella
Scutigerella
immaculata
Delia
platura
Geomyza
tripunctata
Oscinella
frit
Agrotis
segetum
Agrotis
ipsilon
Mythimna
unipunctata
Autographa
gamma
Spodoptera
exigua
Spodoptera
frugiperda
Pratylenchus sp.
Heterodera
avenae
Ditylenchus
dipsaci
Meloidogyne
incognita
Pratylenchus
penetrans
Deroceras
reticulatum
Arion
hortensis
Tetranichus
urticae
Helicoverpa
armigera
Pectinophora
gossypiella
Tetranychus
urticae
Bemisia
tabaci
Aphis
gossypii
Jacobiella spp., Amrasca
Dysdercus spp.
Anomis
flava
Earias sp
Thaumatotibia
leucotreta
Diparopsis spp
Spodoptera
littoralis
Syllepte
derogata
Meloidogyne
incognita
Pratylenchus
penetrans
Trialeurodes
vaporarium
Bemisia
tabaci
Aphis
gossypii
Myzus
persicae
Frankliniella
occidentalis
Nezara
viridula
Tetranychus
urticae
Several
species
Spodoptera
exigua
Spodoptera
littoralis
Helicoverpa
armigera
Batrachedra
amydraula
Eupoecilia
ambiguella
Lobesia
botrana
Scaphoideus
titanus
Empoasca
vitis
Planococcus sp
Frankliniella
occidentalis
Drosophila
suzukii
Helicoverpa
armigera
Spodoptera spp.
Leucania
loreyi
Ditylenchus
destructor
Nasonovia
ribisnigri
Phorodon
humuli
Aphis
fabae
Acyrtosiphum
onobrychis
Bathycoelia
natalicola;
Coreidae spp.; Pentatomidae
wayi
Bactrocera
oleae
Prays
oleae
Trips
tabaci
Delia
antiqua
P. penetrans sp.
Ceutorhynchus
napi
Ceutorhynchus
quadridens
Meligethes
aeneus
Phyllotreta sp.
Psylliodes
chrysocephala
Delia
radicum
Myzus
persicae
Brevicoryne
brassicae
Grapholita
molesta
Anarsia
lineatella
Myzus
persicae
Ceratitis
capitata
Drosophila
suzukii
Panonychus
ulmi
Criconema spp.
Pratylenchus spp.
Paratrichodorus spp.
Cacopsylla
piri
Cydia
pomonella
Grapholita
lobarzewskii
Adoxophyes
orana
Aphis
gossypii
Myzus
persicae
Trialeurodes
vaporarium
Bemisia
tabaci
Nezara
viridula
Chrysodeixis
chalcites
Tetranychus
urticae
Meloidogyne
incognita
Meloidogyne spp.
Pratylenchus spp.
Leptinotarsa
decemlineata
Macrosiphum
euphorbiae
Myzus
persicae
Agriotes sp.
Globodera sp.
Meloidogyne sp.
P. penetrans sp.
Slugs
Tipula
oleracea
Melolontha
melolontha
Phthorimaea
operculella
Athous spp.
Sciobius
horni
Grapholita
funebrana
Chilo
supresalis
Helicoverpa
armigera
Spodoptera spp.
Leucania
loreyi
Vanessa
cardui
Thysanoplusia
orichalcea
Chaetosiphon
fragaefolii
Trips
tabaci
Frankliniella
occidentalis
Drosophila
suzukii
Trialeurodes
vaporarium
Tetranychus
urticae
Atomaria
linearis
Aphis
fabae
Myzus
persicae
Agriotes sp.
Heterodera spp
Pegomya
hyoscyamis
Eldana
saccharina
Sipha
flava
Fulmekiola
serrata
Criconema spp.
Meloidogyne spp.
Pratylenchus spp.
Rotylenchus spp.
Agriotes sp.
Helicoverpa
armigera
Spodoptera spp.
Leucania
loreyi
Meloidogyne spp
Helicoverpa
armigera
Spodoptera
exigua
Spodoptera
littoralis
Tuta
absoluta
Chrysodeixis (Plusia)
chalcites
Trialeurodes
vaporarium
Bemisia
tabaci
Tetranychus
urticae
Meloidogyne
incognita
Nezara
viridula
Chrysodeixis
chalcites
Aculops
lycopersici
Frankliniella
occidentalis
Heliothis
armigera
Spodoptera
exigua
Spodoptera
littoralis
Tetranychus
urticae
Autographa
gamma
Tuta
absoluta
Rhagoletis
completa
In one embodiment, device D is used according to the invention for controlling the following pests on the following crops using the active ingredient as specified in the following table:
Dendroctonus
ponderosae
Dendroctonus
brevicomis
Dendroctonus
frontalis
Dendroctonus
valens
grandis
grandis
eugenii
grandis
grandis
Rhynchophorus
vulneratus
Rhynchophorus
ferrugineus
Coleophora
anatipennella
Coleophora
coracipennella
Coleophora
dahurica
Coleophora
hemerobiella
Coleophora
laricella
Rhynchophorus
vulneratus
Metamasius
hemipterus
Halyomorpha
halys
servus
conspersus
tristigmus
Acrosternum
hilare
filipendulae
serricorne
cossus
uncula
anatipennella
Coleophora
coracipennella
cossus
Agonopterix
ulicetella
trabealis
trigrammica
Aproaerema
modicella
chrysitis
fucosa
Enarmonia
formosana
Eucosma
notanthes
Grapholita
libertina
ombrodelta
Cryptophlebia
batrachopa
molesta
strobilella
Setora
nitens
spargotis
Actebia
fennica
colfaxiana
Rhyacionia
neomexicana
pomonella
trasias
splendana
succedana
caryana
Rhyacionia
busckana
latiferreanus
Lobesia
botrana
Leguminivora
glycinivorella
Choristoneura
orae
Helicoverpa
armigera
Choristoneura
fumiferana
citrana
Argyrotaenia
sphaleropa
Choristoneura
occidentalis
Helicoverpa
armigera
Euzophera
semifuneralis
peltigera
ceratoniae
Heliothis
virescens
interpunctella
Spodoptera
exigua
cautella
Euzophera
semifuneralis
edmandsii
serratilineella
elutella
Homoeosoma
electellum
orientalis
castanea
Loxagrotis
albicosta
MacDunnoughia
confusa
Choristoneura
murinana
Lobesia
botrana
Dendrolimus
pini
Cryptophlebia
leucotreta
Actebia
fennica
Lobesia
botrana
sativa
discana
Ecdytolopha
aurantiana
Cryptophlebia
leucotreta
Cryptophlebia
batrachopa
Grapholita
molesta
strobilella
Eucosma
sonomana
Cryptophlebia
leucotreta
cossus
ochrogaster
filipendulae
Loxagrotis
albicosta
maximus
frugiperda
Thysanoplusia
orichalcea
Loxagrotis
albicosta
praefica
Eucosma
notanthes
Cryptophlebia
leucotreta
Cryptophlebia
batrachopa
Grapholita
molesta
funebrana
lobarzewskii
viteana
Eucosma
sonomana
Choristoneura
orae
Choristoneura
pinus
Platynota
stultana
Choristoneura
parallela
Platynota
idaeusalis
Platynota
flavedana
Choristoneura
orae
Choristoneura
pinus
Platynota
stultana
Choristoneura
parallela
Platynota
idaeusalis
Platynota
flavedana
Yponomeuta
malinellus
Yponomeuta
evonymellus
Rhopobota
naevana
Choristoneura
pinus
rosana
Adoxophyes
orana
Maliarpha
separatella
Spodoptera
exigua
Dioryctria
resinosella
Hulstia
undulatella
Adoxophyes
orana
lycopersicella
lycopersicella
Amyelois
transitella
Epiphyas
postvittana
interpunctella
Spodoptera
exigua
Spodoptera
eridania
Spodoptera
littoralis
xylostella
Diatraea
grandiosella
Parapediasia
teterrella
Choristoneura
rosaceana
Pandemia
pyrusana
Epiphyas
postvittana
Ostrinia
nubilalis
Epiphyas
postvittana
Spodoptera
exigua
Ostrinia
nubilalis
frugiperda
Adoxophyes
orana
clarioralis
Holcocerus
hippophaecolus
Planotortrix
excessana
Pseudexentera
oregonana
Ctenopseustis
obliquana
Spilonota
ocellana
Pseudexentera
spoliana
renigera
spectrana
fusca
Hydraecia
micacea
Dioryctria
resinosella
Adoxophyes
orana
Neoleucinodes
elegantalis
orbonalis
Sceliodes
cordalis
hyalinata
nitidalis
Sesamia
grisescens
xylostella
Helicoverpa
punctigera
peltigera
nonagrioides
edmandsii
serratilineella
maritime
adaucta
granarium
Trogoderma
inclusum
Trogoderma
variabile
Diatraea
grandiosella
suppressalis
Homoeosoma
nebulellum
Cryptoblabes
gnidiella
Eoreuma
loftini
xylostella
Neoleucinodes
elegantalis
Ostrinia
nubilalis
orbonalis
Sceliodes
cordalis
hyalinata
Brachmia
macroscopa
Synanthedon
tipuliformis
sasakii
Chilo
sacchariphagus
Eoreuma
loftini
Cnaphalocrocis
medinalis
Synanthedon
tipuliformis
Orgyia
pseudotsugata
Dendroctonus
pseudotsugae
Dendroctonus
ponderosae
Grapholita
molesta
lineatella
Epiphyas
postvittana
grandis
In one embodiment, device D is used according to the invention for controlling the following pests on the following crops using the active ingredient as specified in the following table (Pheromones 1 to 4 can be used as alternatives to each other or in combination):
Acrolepia
assectella
Adoxophyes
orana
Anarsia
lineatella
Anomis flava
Autographa
gamma
Autographa
gamma
Batrachedra
amydraula
Chilo
suppressalis
Chrysodeixis
chalcites
Cnephasia
pumicana
Crytoblabes
gnidielle
Crytoblabes
gnidielle
Crytoblabes
gnidielle
Cydia
pomonella
Grapholita
funebrana
Delia radicum
Diparopsis
castanea
Earias insulana
Eldana
saccharina
Eupoecilia
ambiguella
Grapholita
lobarzewskii
Grapholita
molesta
Grapholita
molesta
Helicoverpa
armigera
Helicoverpa
armigera
Helicoverpa
armigera
Leucania loreyi
Lobesia botrana
Ostrinia
nubilalis
Pectinophora
gossypiella
Phthorimaea
operculella
Phyllocnistis
citrella
Pieris brassicae
Plutella
xylostella
Plutella
xylostella
Prays oleae
Sesamia
Sesamia
nonagrioides
Sitotroga
cerealella
Spodoptera
exigua
Spodoptera
exigua
Spodoptera
exigua
Spodoptera
frugiperda
Spodoptera lit-
toralis
Spodoptera lit-
toralis
Spodoptera lit-
toralis
Syllepte dero-
gata
Thaumatotibia
leucotreta
Thysanoplusia
orichalcea
Tuta absoluta
Vanessa cardui
Tetranychus
urticae
Tetranychus
urticae
Tetranychus
urticae
Tetranychus
urticae
Anthonomus
grandis
Diabrotica
barberi
Diabrotica
undecimpunctata
howardi
Diabrotica
virgifera
Campylomma
verbasci
Eurygaster in-
tegriceps
Nezara viridula
Trigonotylus
caelestialium
Aonidiella
aurantii
Aphis gossypii
Aphis gossypii
Dysaphis
plantaginea
Planococcus
ficus
Quadraspidiotus
perniciosus
Quadraspidiotus
perniciosus
For forestry applications, device D is in one embodiment used for controlling one or more of the following insects:
Agrilus planipennis, Anoplophora glabripennis, Cinara cupressivora, Cinara pinivora, Dendroctonus frontalis, Dendroctonus ponderosae, Dendrolimus sibiricus, Dendroctonus valens, Gonipterus scutellatus, Heteropsylla cubana, Hypsipyla grandella, Hypsipyla robusta, Ips sexdentatus, Ips subelongatus, Ips typographus, Leptocybe invasa, Lymantria dispar, Lymantria monacha, Orthotomicus erosus, Phoracantha recurva, Phoracantha semipunctata, Sirex noctilio, Thaumetopoea pityocampa, Thaumetopoea processionea.
Typically, in agricultural applications, especially crop protection applications, device D is used such that 1 to 20 devices are placed per hectare. In one embodiment, 2 to 15 devices D are placed per hectare. In one embodiment, 3 to 10 devices D are placed per hectare.
Depending on the target crop, the target insect, the nature of the field it is used in, device D can be placed on the ground or in a height above ground level of up to 5 meters, preferably on ground level or in a height above ground level of up to 2 meters.
Device D is used to disperse the active ingredient in such amounts to achieve the desired effect. For example, semiochemicals like pheromones are dispensed in amounts that are sufficiently high to disrupt the mating of the target insects.
Typically device D is used in agricultural applications such that it dispenses such semiochemicals such as pheromones in an amount of 0.1 to 65 mg/hour when the device operates.
It is one advantage of the use of device D in agricultural applications that the duration and the timing of the operation of device D can be adjusted to various parameters, for example the daylight, the season of the year, the temperature, the humidity or other environmental or weather parameters.
For example it is advantageous for some applications if device D only dispenses pheromones during the hours of the day when the target insects are active (e.g. during day). In some cases it is advantageous of pheromones are only dispensed when it is not raining.
In one embodiment, device D comprises one or more sensors to determine the time, the date, the temperature, the humidity, the atmospheric pressure or other environmental parameters so that the operation of device can be automatically linked to such external parameters. In one embodiment, such external parameters will be processed by an integrated circuit or a computer that can control the operation of device D accordingly using a predefined schedule.
In one embodiment, device D comprises a communication module for providing wired or wireless communication with a data server, in order to control the operation of device D.
In one embodiment, device D comprises a communication module for providing wired or wireless communication with the purpose of communicating to a data server, computer or mobile device like mobile phone information about the operating state of device D, possible failures or errors during operation or the filling status of the container containing the active ingredient.
In the context of an expensive substance, for example when the substance comprises a pheromone, which is in liquid form at ambient temperature, it is necessary to avoid wasting said substance. Thus, in this case, the desire is to convey an amount of liquid that is sufficiently small for the flow to take place without formation of drops, but nevertheless sufficiently large for the evaporation zone to remain permanently wetted in spite of the airflow sent through the aeration system. This physical phenomenon is governed in the cold state by Jurin's law and in the hot state by Darcy's law.
Darcy's law is formulated as Q=KA(ΔH)/L, where Q is the volumetric flow rate, K is the hydraulic conductivity, A is the area of the section studied, ΔH is the difference in the piezometric heads upstream and downstream of the sample, and L is the length of the sample. The hydraulic conductivity is calculated with the formula K=kρg/μ, where k is the intrinsic permeability of the porous medium, ρ is the density of the fluid, g is the acceleration due to gravity, and μ is the viscosity of the fluid.
Jurin's law corresponds to the formula h=(2γcos(θ))/(rρg), where h is the height of the liquid, γ is the surface tension of the liquid, θ is the angle of contact between the liquid and the wall of the micro-pipes, ρ is the density of the liquid, r is the radius of the micro-pipes, and g is the gravitational constant.
Conditions are desired in which, in the cold state, K is too low for there to be flow, meaning the existence of a situation referred to as “capillary”, and in which, in the hot state, there is sufficient flow for there to be surface spreading and for the liquid to adhere to the surface. The layer of liquid adhering to the surface changes AH and there is a fixed flow rate because K has reached a maximum value.
The two most important parameters are thus the viscosity of the fluid and the temperature.
In one exemplary embodiment, cosθ is positive, meaning that the substance wets the distributor member, made for example of ceramic, the density of the liquid is between 0.6 and 1 g/cm3, and the radius of the micro-pipes is between 5 nm and 1 μm.
In the cold state, the surface area of evaporable liquid is thus very low: sum of the micro-pipes, liquid contracted and cold (therefore dependence on the volatility of the liquid). For pheromones, there is zero evaporation in the cold state.
The drop in the dynamic viscosity of the substance with the heat supplied by the heating member allows the fluid to flow within the distributor member under Darcy's law and then to spread over the surface of said distributor member. Without heat input, the flow is fixed since the sum of adhesions within the distributor member obeys Jurin's law. In other words, flow is allowed through the distributor member in the hot state but stopped at ambient temperature by the force of adhesion between the fluid and the surface of the distributor member.
During flow, more energy is required to form a drop that will detach than is required to keep the solution within the distributor member and the storage container. This stems from two conditions:
Herein, the term “micro-pipe” will be used for a pipe having a cross-sectional area of between 10−4 and 106 μm2 .
According to one embodiment, the distributor member has a porous body comprising pores, said pores constituting at least a part of the micro-pipes of the distributor member.
According to one embodiment, the pores have an average diameter of between 0.01 and 10 μm.
According to one embodiment, the porous body has a cylindrical shape.
According to one embodiment, the supply of active ingredient is received in a recess.
According to one embodiment, the recess is a blind recess and is provided parallel to the axis of the porous body.
According to one embodiment, the porous body comprises a protuberance that is arranged on an upper part of said porous body and extends along a longitudinal axis of the porous body and that is configured to receive the active ingredient.
According to one embodiment, the distributor member has a peripheral membrane that is arranged around the porous body and is pierced with holes that constitute micro-pipes.
According to one embodiment, the porous body has a porosity in an inner part of the porous body that is less than a porosity in an outer part of the porous body surrounding the inner part. This makes it possible to control the flow rate in the porous body with the low porosity and to increase exchanges with the air with the high surface porosity.
According to one embodiment, the porous body has a wooden, textile, ceramic, metal (e.g. sintered stainless steel) or polymer wick.
In one embodiment, the porous body has a wick made of ceramic.
In one embodiment, the porous body has a ceramic wick made of silica.
In the context of this application, the term ceramic shall comprise silica.
In one embodiment, the porous body has a ceramic wick made of alumina, preferably sintered alumina.
In the context of this application, the term ceramic shall comprise alumina.
According to one embodiment, the heating member is positioned directly on a surface of the porous body.
According to one embodiment, the porous body has at least one recess accommodating at least a part of the heating member.
According to one embodiment, the distributor member comprises a hollow needle configured to pierce a membrane seal of the storage container and/or to move a membrane forming a flap valve of the storage container and to convey the active ingredient contained in the storage container to the evaporation surface.
According to one embodiment, the needle is disposed at one of the ends of the porous body. Such a needle can also be employed in combination with a “self-healing” perforable stopper accommodated in the inlet of the storage container, that is to say a mass of elastic material that elastically closes up the perforation made by the needle, such that there is no flow after the latter has been withdrawn.
According to one embodiment, a path from the storage container to an outlet of the micro-pipes in the evaporation zone constitutes a micro-pipe only along a fraction of a length of the path.
In one embodiment, the pores (the micropipes) have a number average diameter from 0.01 and 10 μm.
According to one embodiment, the micro-pipes have a cross section of between 10−4 μm2 and 106 μm2, preferably between 0.1 μm2 and 103 μm2 .
In one embodiment, the micro-channels have a number average cross section of between 10−4 μm2 and 106 μm2, preferably between 0.1 μm2 and 103 μm2 .
According to one embodiment, the ratio of the internal cross section of the pipe of the aeration system to an external cross-sectional area of the evaporation zone is between 1.2 and 625.
According to one embodiment, the device also has a fastening member that is orientable in terms of direction and/or inclination with respect to the pipe of the aeration system, in order to orient the pipe with respect to the ground when the fastening member is fastened to a support.
According to one embodiment, the aeration system has at least one fan installed in a part of the pipe.
According to one embodiment, the aeration system has at least one fan installed in the part of the pipe that is at the opposite end from its mouth into the open air.
According to one embodiment, the aeration system has openings made in an end wall of the pipe and adjustable shutters equipping said openings so as to make it possible to adjust a flow cross section of the openings.
According to one embodiment, the device comprises a regulator member for regulating an airflow in the pipe, said regulator member being configured to control the fan and/or the shutters in order to regulate an airflow in the pipe.
According to one embodiment, the airflow in the aeration system of the unit according to the invention is associated with a regulator member that is able to control the turbulence of the flow of air in the evaporation zone; the regulator member can be controlled by at least one temperature sensor that detects the temperature of the flow of air and/or that of the porous body, or by at least one speed sensor that detects the speed of the flow of air.
According to one embodiment, the regulator member is configured to output a signal acting on the speed of rotation of the fan generating the airflow in the aeration system and/or a signal acting on the adjustable shutters.
According to one embodiment, the airflow in the aeration system is between 0.2 and 60 m3/h.
According to one embodiment, the pipe is equipped with a sensor for the speed and the temperature of the flow of air.
In one embodiment, the nozzle is equipped with a sensor for the speed and the temperature of the flow of air; the turbulence of the air, where the active ingredient is dispersed, is controlled by virtue of at least one temperature sensor that detects the temperature of the flow of air and/or that of the porous body.
According to one embodiment, the turbulence of the air, where the active ingredient is dispersed, is controlled by virtue of at least one temperature sensor measuring the temperature of the distributor member and/or the temperature of the flow of air.
According to one embodiment, the device also comprises a control device configured to control the heating member depending on a setpoint temperature in the distributor member.
According to one embodiment, the heating member comprises at least one circuit board and at least one electrical resistor supplied with electrical power by the circuit board. The electrical resistor can be disposed on said circuit board, or away therefrom.
According to one embodiment, the control device is arranged on the circuit board.
According to one embodiment, the distributor member is equipped with a temperature sensor, for example at a free end.
According to one embodiment, the setpoint temperature is defined depending on the active ingredient.
According to one embodiment, the control device is connected to a detector configured to detect a tag on the storage container that indicates the active ingredient contained in the container, and the control device determines, depending on said tag, at least one operating parameter of the device selected from the setpoint temperature, an airflow, and time indications defining an on/off cycle. Such time indications include for example cycle start dates, cycle end dates, cycle durations, inter-cycle duration, etc.
According to one embodiment, the control device has a memory in which a table of values associating active ingredients with setpoint temperatures is stored.
According to one embodiment, the device also has a communication module for providing wired or wireless communication with a data server, in order to modify the table of values.
According to one embodiment, the invention also provides a unit for dispersing in the air, as a vapor, a active ingredient in liquid form at ambient temperature, having:
According to one embodiment, the active ingredient has a viscosity that is variable depending on the temperature, said viscosity being such that the active ingredient cannot flow through the micro-pipes in the distributor member at an ambient temperature below a first temperature, and the heating member is configured to heat the distributor member to a second temperature higher than the first temperature such that the active ingredient flows through the micro-pipes in the distributor member under capillary action.
According to one embodiment, the active ingredient at the second temperature spreads as a liquid over a surface of the distributor member situated in the aeration system.
According to one embodiment, the heating member is configured to regulate a flow rate of the active ingredient through the distributor member by modifying a viscosity of the active ingredient without vaporizing the active ingredient.
According to one embodiment, the second temperature is chosen such that the active ingredient flows at a flow rate that is sufficiently low to avoid the formation of drops that detach from the distributor member and sufficiently high for the evaporation zone to remain permanently wetted in spite of the airflow sent through the aeration system.
According to one embodiment, the storage container has a drain orifice that is connected to the distributor member and oriented downward when the unit is in a use position.
When not in use in the unit, that is to say before the container is connected to the distributor member or after it has been disconnected from the distributor member, such a storage container can be provided with a stopper arranged at the drain orifice.
According to one embodiment, the storage container does not have any other opening than the drain orifice, said storage container containing, besides the liquid active ingredient, a gas phase that takes up at least 20% of the volume of the storage container.
According to one embodiment, the storage container has an outer reservoir and an inner reservoir accommodated in the outer reservoir, the inner reservoir being linked to the distributor member through the drain orifice and having a vent connected to the atmosphere at an opposite end from the drain orifice, a communication orifice between the outer reservoir and the inner reservoir being arranged close to the drain orifice, the outer reservoir having no other opening than the communication orifice.
According to one embodiment, the storage container is mounted in a removable manner in the device and configured to be able to be removed from the device without loss of active ingredient.
According to one embodiment, the storage container is mounted in the device by screwing or snap-fastening.
According to one embodiment, the distributor member has a first surface that faces the storage container and is provided with a seal providing a sealed connection between the distributor member and the storage container, and a second surface arranged in the aeration system.
According to one embodiment, the storage container comprises a seal arranged around the drain orifice, so as to provide a sealed connection between the storage container and the distributor member.
According to one embodiment, the storage container comprises a cellular retention member arranged in the container adjacent to the drain orifice so as to limit flow of the active ingredient.
According to one embodiment, the heating member and the storage container are disposed on either side of the distributor member.
According to one embodiment, the cellular retention member comprises a material chosen from a felt, for example a wool felt, and a melamine foam.
According to one embodiment, a link between a storage container and its associated distributor member is ensured by means of a feed line equipped with a shutoff solenoid valve at the outlet of the container.
According to one embodiment, a distribution regulator means is inserted between the active ingredient storage container and the distributor member.
According to one embodiment, the distribution regulator means is an adjustable-opening valve.
According to one embodiment, the valve has only two adjustment positions, namely open or closed.
According to one embodiment, the flow-rate regulator means is an electrically powered pump.
According to one embodiment, the active ingredient has a boiling point of between 30° C. and 400° C. at atmospheric pressure.
According to one embodiment, the active ingredient has a viscosity greater than 1 cPa.s at 25° C., for example greater than 8 cPa.s at 25° C., and less than 1 cPa.s at 60° C.
According to one embodiment, the active ingredient is a liquid comprising at least one compound taken from the group formed by semiochemical substances, and phytosanitary and agricultural agents.
According to one embodiment, the active ingredient is a liquid containing at least one semiochemical substance, at least one pheromone, an allomone or a kairomone, of natural or synthetic origin.
According to one embodiment, the active ingredient is a liquid containing at least one sexual or non-sexual pheromone, an allomone, a synomone or a kairomone intended to bring about a positive or negative response relative to the target species, the result of which in terms of behavior can be sexual confusion, confusion of another kind, sexual attraction, attraction of another kind, repulsion of any kind, among arthropods, including arachnids, or including hexapods, in particular insects, including harmful insects.
According to one embodiment, the active ingredient is a liquid containing at least one pheromone or a sexual pheromone, an allomone, a synomone or a kairomone intended to bring about a positive or negative response relative to the target species.
According to one embodiment, the active ingredient comprises a solvent chosen from isopropyl myristate, dipropylene glycol, dipropylene glycol monomethyl ether, esters like acetic acid esters and an isoparaffinic hydrocarbon, for example an isoparaffin L or P or N or V.
According to one embodiment, the unit has a plurality of storage containers that each contain an active ingredient in liquid form or a plurality of active ingredients in liquid form that are miscible with one another.
According to one embodiment, all or part of the set of storage containers is carried externally by the pipe of the aeration system.
According to one embodiment, all or part of the set of storage containers can be carried externally by the pipe of the aeration system or the extension nozzle thereof.
According to one embodiment, each storage container is associated with a porous body of the distributor member, all of the porous bodies being fitted inside the pipe of the aeration system and being disposed with the porous bodies offset in a longitudinal direction of the pipe.
According to one embodiment, all of the porous bodies are fitted inside the pipe or the nozzle of the aeration system and can be disposed with the porous bodies offset appropriately so as to avoid any obstruction that impedes the passage of the flow of air.
The invention also provides a method for using the device or the unit, wherein the axis of the pipe of the aeration system is oriented in terms of direction and/or inclination so as to reach an area intended to be treated.
In order to make the present invention easier to understand, embodiments shown in the appended drawings will now be described by way of purely illustrative and nonlimiting examples.
According to a first embodiment illustrated in
Externally, the nozzle 4 carries a storage container 5, which is intended to receive the active ingredient intended to be diffused in the flow of air pulsed by the electric fan 1. The storage container 5 has an outlet made in its wall, which rests on the nozzle 4; this outlet supplies a feed line 6 having an inside diameter of about 800 μm; the feed line has a length of about 3 cm; the inlet of the feed line 6 is equipped with a solenoid valve 7, which makes it possible to stop the system, in particular in the event of an emergency. The feed line 6 connects the storage container 5 to a cylindrical porous body 8 made of ceramic, which has a cylindrical axial blind recess 9, in which the end of the feed line 6 is engaged in a sealed manner. Placed on the end face of the porous body 8 where the feed line 6 has not been introduced is a thermometer chip 10, which is able to measure and transmit the temperature of the porous body 8. This cylinder 8 carries, on its opposite face to the one where the thermometer chip 10 is located, a heating member 11. The porous body 8 is made of alumina and has pores with a diameter of 100 nm and a uniform porosity of 40%.
Fitted on the surface of the storage container 5 is an electronic tag 12, which makes it possible to identify the semiochemical placed in the container 5. This electronic tag takes the form of a label comprising an RFID (“radiofrequency identification”) chip. Provided in the top part of the container 5 is a liquid-tight opening that makes it possible to keep the interior of the container at atmospheric pressure. The porous body 8 is chosen depending on the active ingredient to be diffused. It is possible for the porous body 8 and the feed line 6 to be able to be formed in a single piece and/or to be integral.
The information relating to the inherent characteristics of the active ingredient, to the characteristics chosen for the porous body 8 and/or to the temperature of the porous body 8, is information that is sent to an electronic controller (not shown), which ensures, automatically, those adjustments that are useful for modifying to the desired value the ratio of the airflows, that is to say the ratio between the airflow without the electric fan and the airflow generated by the fan, and the temperature of the porous body 8 quantifying the evaporated flow of the pheromone liquid in the gaseous flow produced by the unit according to one of the variants of the control method described.
The active ingredient is drawn into the feed line 6 by a capillary pumping force generated by the fact that the active ingredient moves in micro-pipes, the walls of which are wetted by the active ingredient on account of its surface tension. Of course, the materials used are sufficiently neutral so as not to deteriorate the mixture in the long term and so that the surface tensions are not changed. The capillary force is brought about by the nature of the surface, which is made up of channels or pores that are sufficiently narrow to generate capillary traction; the liquid wets the materials of the feed line 6 and of the porous body 8. The liquid is thus level with the end of the pores of the porous body, the set of pores making up the evaporation surface thus situated at the periphery of the porous body 8.
It is necessary for the traction and capillary retention force to allow the liquid to be level with the end of the pores of the evaporation surface; however, this has to be effected without allowing uncontrolled spreading over the evaporation surface via the forces brought about by the gravitational fields (attraction of the Earth and hydrostatic pressure of the column of liquid that may be present) or by the static attractive forces generated by the interactions between the liquid and the rest of the surface of the wick. This capillary traction only exists by renewal of this final volume block (the section/cylinder of liquid at the end of the pore). The renewal of this volume is effected by evaporation and is governed by the equilibrium of the concentrations of the liquid and gas molecules at the liquid and gas interface in accordance with a value that is inherent to each liquid and dependent mainly on the temperature (at atmospheric pressure), namely the saturation vapor pressure. Increasing the temperature of the liquid to be evaporated causes an increase in the saturation vapor pressure, and thus a shift in the equilibrium of the concentrations of liquid and gas molecules at the interface toward gas molecules: there is evaporation until there is a new equilibrium. If the gas phase is moving, the equilibrium is never achieved, and evaporation continues until the liquid phase is exhausted. The more the gas phase moves (and tends to evacuate the gas-phase molecules more quickly), the faster the evaporation.
It has been found that, in a system of the type described above, the evaporation kinetics are multiplied by a factor of between 1 and 10 when passing from a fan speed of 0 to 24 m/s; moreover, if the liquid is changed from 20° C. to 70° C., the evaporation kinetics are increased by being multiplied by a factor of between 20 and 100.
The parameters of the described system can be adjusted by acting on the fan 1 (action on the airflow) and/or by acting on the heating member, in this case an electric heater 11, also known as a resistor, placed on the evaporation surface. The measurement that can be taken by means of the thermometer 10 makes it possible to adjust the intensity or the activation time of the electric heater in order to obtain the desired temperature of the desired evaporation surface. It is also possible to provide at the free end of the nozzle 4 disruptors for the flow of air blown or convectors for modifying the area over which the active ingredient is dispersed.
The user of the unit, whether it be a unit of the type in
According to a second embodiment, illustrated in
When it is open, as shown in
With reference to
Located around the central part of the structure, which has just been described and which is denoted generally by the reference 101, is another cylindrical wall 110, coaxial with the cylindrical wall, which delimits the zone of the storage reservoir 106 and extends around the porous body 8. This cylindrical wall 110 is secured to a bottom, which is formed by a flange 135 connecting the two cylindrical walls 110 and 115 together; disposed on this flange 135 are electric batteries 120 distributed regularly about the axis of the casing 100; the assembly (110, 115, 135) forms a barrel, as is clearly visible in
These batteries are connected to a control board 130, which is accommodated in the part of the jaw 112b positioned tangentially to the battery barrel. The board 130 is electrically connected, on the one hand, to the motor of the fan 109 and, on the other hand, to heating members 132 inserted into the porous body 8, in particular on the face thereof inserted into the radial arms of the cross brace 121.
In the unit that has just been described, the active ingredient conveyed by the storage container 106 is distributed, as soon as the cover 105 has effected the perforation of the container 106b with the perforator element 121b, through the porous body 8, the evaporation zone of which is the free surface as indicated by the arrows in
With reference to
The airflow and the temperature of the heating body are regulated by the control board 130.
Preferably, the active ingredient and the porous body 8 have physical properties that allow regulation of the flow rate by temperature control in the porous body 8.
In particular, in a preferred embodiment:
The control board 130 controls the heating members 132 on the basis of a control program stored in its memory. This program defines for example the distribution start and end times, the setpoint temperatures, the airflows (in the event of forced ventilation), etc.
In an embodiment that is not shown, the solenoid valve of the first and second embodiments can be replaced by a manual valve. It can also be eliminated in each of the embodiments.
An embodiment variant of the porous body is illustrated in
In this embodiment variant, the porous body can have either a uniform porosity or a nonuniform porosity. In the latter case, the open porosity is 25% at the core and 45% at the surface. This will then be a porous body in which the open porosity, i.e. the volume of pores per unit volume of the porous body, increases from the core to the evaporation surface. This therefore favors the greatest possible spread over the entire surface of the porous body at the outlet of the pores, and the mechanical integrity of the porous body is preserved with a denser core.
A third embodiment of the unit is illustrated in
With reference to
The upper piece 505b is able to be covered by a cover 514; the cover 514 is hinged by means of a pin 516 perpendicular to the axis of the stand 512.
When it is open, the cover 505 completely opens up the central opening 507b and makes it possible to introduce, into the casing 503, a cylindrical storage container denoted 550 as a whole. The container 507 contains the active ingredient, e.g. the pheromone, intended to be diffused as a vapor in the ambient air.
When the cover 514 is in the closed position, as illustrated in
The casing 503 also comprises a hollow cylinder 510 formed of two identical hollow half-cylinders 510a, 510b. These two half-cylinders, when they are joined together, sandwich the porous body 208, which is surmounted by a needle 540 and rests on the heating member, the electrical circuit 230 of which is shown. The needle is fastened to the porous body by virtue of clips 542 extending longitudinally from a flange 541 at the base of the needle 540. The two half-cylinders, when they are joined together, also sandwich a filter 543 at their base, and two fans (not shown) at the join between the lateral walls of the half-cylinders. The assembly formed by the needle and the porous body is maintained by a groove inside the walls of the cylinder, the groove accommodating the flange 541. The filter is fastened to the cylinder in an identical manner. Finally, the cylinder 510 is held between the upper piece 507b and lower piece 507a in line with the openings of these pieces 507b, 507a, the upper and lower pieces sandwiching the cylinder 510.
The solar panels are connected to a control board 530, which is housed in a housing between the walls of the casing 503, the hollow cylinder 510 and the upper and lower pieces. The board 530 is electrically connected, on the one hand, to the fans and, on the other hand, to the heating member, the electrical circuit 230 of which is shown.
With reference to
The storage container may be provided to be removable, in particular because this makes it easier to change the storage container at lower cost. According to an embodiment that is not shown, the stopper then also comprises a flap valve configured to close when the storage container is withdrawn from the unit. In this case, it is impossible to remove the storage container unless the entire porous body is soaked with the active ingredient contained in the porous body.
As an alternative to the use of a needle and a flap valve, the storage container may contain a sponge, as illustrated in
The storage container is then removable and the liquid will not flow from the container when contact with the porous body 208b is broken, in the same way as liquid does not flow from the porous body 208 during operation in the cold state (ambient temperature). This sponge 408 is generally made of wool felt or melamine. In conclusion, the sponge is preferably flexible and slightly compressible by the porous body 208 to ensure contact.
Generally, the storage container is held on the unit by pressure, for example by virtue of clips, or by screwing the top of the storage container. In any case, contact between the storage container and the porous body is sealed on account of the presence of a seal.
In order for the adhesion of the active ingredient to the porous body 208 to be sufficient, one of the parameters to be controlled is the pressure inside the storage container. Specifically, if the storage container is open to the open air, the adhesion of the active ingredient will never be sufficient to compensate for the force of gravity acting on the liquid. It is therefore necessary to deal with this force of gravity. Two types of storage containers can be used. The first type of storage container is a reservoir that is completely closed apart from at one of its ends, which is in contact with the porous body. This type of storage container is illustrated in
With reference to
The above-described retention member can also be employed in the storage container 400. In the storage container 400, the retention member, for example made of sponge or cellular foam, can take up all or part of the inner reservoir 403.
With reference to
At the end of the screwing, the bevel of the needle reversibly moves the membrane 310 in the manner of a flap valve, as illustrated in
If it is necessary to change the storage container, for example because it is empty or it is necessary to change the active ingredient, the container is unscrewed. When the needle no longer passes through the membrane, the latter closes again, thereby preventing the active ingredient from flowing.
In a variant of the storage container 300, the above-described cellular retention member is employed instead of the membrane 310. In this case, the distributor member does not have a needle but a porous body, which comes into direct contact with the cellular retention member to exert the capillary traction as described above.
Some of the elements described herein, in particular the control device, the control boards or the electronic controllers, can be realized in different forms, in a unitary or distributed manner, by means of hardware and/or software components. Hardware components that are usable are application-specific integrated circuits (ASIC), field programmable logic arrays (FPGA) or microprocessors. A local clock and/or a network clock can be integrated into these elements in order to provide time references.
Although the invention has been described in connection with a number of particular embodiments, it is clear that it is in no way limited thereto and that it comprises all the technical equivalents of the means described and the combinations thereof where these enter into the scope of the invention.
The use of the verb “have”, “comprise” or “include” and the conjugated forms thereof does not preclude the presence of other elements or other steps than those set out in a claim.
In the claims, any reference sign between parentheses should not be interpreted as limiting the claim.
The use and the methods of use according to the invention allow for the efficient use of active ingredients such as semiochemicals like pheromones in agricultural applications. They require the use of only a small number of devices D per area and do not require the application or installation before the season and removal after the season of high numbers of small containers containing active ingredient from the field. They allow for efficient use of active ingredients like pheromones. They are environmentally friendly. They can be adjusted to external parameters like daylight, season, weather, temperature, humidity, pest pressure, type of crop, type of pest et cetera. They dispense a vapor, as opposed to droplets, which is more easily dispersed and travels further to reach more insects.
They can be integrated with other devices and sensors.
They allow for a feedback loop to give a positive indication of dispensing, or a fault indication if the active is not being dispensed.
Examples
The mating disruption efficacy of different sexual pheromone blends dispersed by the device D according to claim 1 were tested against agricultural lepidopteran pests. Semi-field tests were carried out following the CIRCE methodology (Doye and Koch, 2005, described in: Doye, E. and Koch, U.T. (2005). A reliable field test for the efficiency of mating disruption techniques. IOBC-WPRS Bulletin 28(7): 325-328). In a cage, an unmated moth female attracts a defined number of male moths by emitting the attractant mating pheromone. The females are placed and kept above a sticky plate in a delta-trap so that the males who find the females are trapped. The lower the number of males caught in the female-baited trap, the greater the effectiveness in mating disruption. Results are shown in Table 1.
Lobesia botrana
Lobesia botrana
Lobesia botrana
Lobesia botrana
Eupoecilia ambiguella
Lobesia botrana
Eupoecilia ambiguella
Cydia pomonella
Cydia pomonella
Grapholita molesta
Grapholita molesta
Number | Date | Country | Kind |
---|---|---|---|
20198461.4 | Sep 2020 | EP | regional |
20215899.4 | Dec 2020 | EP | regional |
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/EP2021/075608 | 9/17/2021 | WO |