Patent Application
20160135460
1. Technical Field
The present invention belongs to the field of agricultural plant protection, and particularly relates to a fungicidal composition with improved performances, and more particularly to a fungicidal composition comprising benziothiazolinone.
2. Related Art
Benziothiazolinone is a new broad-spectrum fungicide, which is mainly used for controlling and treating various bacterial and fungal diseases on cereal crops, vegetables, and fruits. The mechanisms of fungicidal action mainly include destroying the nuclei structure of the harmful fungi to cause they to die due to lose of the core component, and interfering with the metabolism of the fungal cells to cause physiological disturbance, thus ultimately leading to death. When the agent is used in the early stage of disease development, the plants may be effectively protected against infection of pathogens; and when the agent is used in an appropriately increased amount after the disease is developed, the spread of the harmful fungi is considerably controlled, thus achieving dual actions of protection and eradication.
Benthiavalicarb-isopropyl has a strong preventive, curative, and penetration activity, and has a good persistence and rainfastness. In field trials, benthiavalicarb-isopropyl can effectively control the late blight of potatoes and tomatoes and the downy mildew of grape and other crops at a low application rate. When mixed with other fungicides, benthiavalicarb-isopropyl also has a quite good efficacy for harmful fungi.
Zoxamide is a new broad-spectrum fungicide, which is mainly used for controlling and treating various bacterial and fungal diseases including downy mildew on cucumbers, black spot on pears, scab on apples, anthracnose on citrus, anthracnose on grapes, and others. The mechanisms of fungicidal action mainly include destroying the nuclei structure of the harmful fungi to cause they to die due to lose of the core component, and interfering with the metabolism of the fungal cells to cause physiological disturbance, thus ultimately leading to death.
Prothioconazole is a new broad-spectrum triazolthione fungicide developed by Bayer Company, which is mainly used for controlling numerous diseases of cereals, wheat and barley, beans and other crops. Prothioconazole has a low toxicity, no teratogenicity and mutagenicity, and is non-toxic to embryos and safe for human and environment. The mechanism of action is inhibiting the demethylation at position 14 of lanosterol or 2,4-methylene dihydrolanosterol that is a precursor of sterol in fungi.
Fenamidone has similar mechanism of action and features to those of famoxadone and methoxyacrylate fungicides, that is, through inhibition of the mitochondrial respiration by hindering the electron transfer at coenzyme Q for hydrogenation-cytochrome C oxidoreductase level. Fenamidone is applicable to wheat, cotton, grape, tobacco, turf, sunflower, rose, potato, tomato, and other vegetables for controlling various diseases including downy mildew, blight, phytophthora blight, damping-off, black spot, and mottled rot.
Pyraclostrobin is a new broad-spectrum fungicide. The mechanism of action includes inhibition of the mitochondrial respiration by hindering the electron transfer during cytochrome synthesis. Pyraclostrobin has protective, curative, and leaf-penetrating translocation effects. The field efficacy test results show that the pyraclostrobin concentrate has a good control effect on powdery mildew and downy mildew of cucumber and black spot and leaf spot of bananas.
Picoxystrobin is a systemic broad-spectrum fungicide, which is mainly used for controlling leaf diseases of wheat and barley, for example, leaf blight, leaf rust, glume blight, brown spot, and powdery mildew. Compared with other methoxyacrylate fungicides, picoxystrobin has a more potent curative effect for leaf blight, net blotch, and leaf blotch of wheat.
Fluazinam is a 2,6-dinitroaniline protective fungicide, which can control the disease caused by Botrytis cinerea when applied at a dosage of 50-100 g (a.i.)/100 L. Fluazinam is quite effective for Alternaria spp, Botrytis spp, Phytophthora spp, Plasmopara spp, Sclerotinia spp, and Nigrospora spp, is highly effective for Botrytis cinerea resistant to benzimidazole and dicarboximide fungicides, and has long persistence and good rainfastness. Moreover, fluazinam also has a good control effect for phytophagous mites, crucifer club root, and rice damping-off caused by Rhizopus spp.
Boscalid is a new nicotinamide fungicide, which is broad in fungicidal spectrum, active for almost all the types of harmful fungi, highly effective for controlling powdery mildew, grey mold, selerotium blight and various rots, and effective for fungi resistant to other agents. Boscalid is mainly used for controlling harmful fungi on rape, grape, fruit trees, vegetables and field crops.
Fluopicolide has a prominent control effect on downy mildew, blight, late blight, damping-off and other common diseases caused by fungi from Oomycetes, is safe for crops and environment, and particularly useful in production of high-quality and green vegetables. Fluopicolide has a highly potent protective and curative effect for diseases on vegetables caused by fungi from Oomycetes due to its unique formulation. Fluopicolide has excellent systemic translocation performance and high thin layer penetrating ability, and has potent inhibition on all the major morphologies of the pathogens, thus providing full and persistent protection for young leaves, stems, tubers, and young fruits. Because fluopicolide can be absorbed quickly through the leaf surface, it has a good rainfastness, thus provide a reliable safeguard for disease control of vegetables in the rain season.
Famoxadone is a new high-potent and broad-spectrum fungicidal agent, which is suitably used for wheat, barley, peas, sugar beets, rape, grape, potato, melons, hot peppers, tomato, and other crops, and mainly used for controlling diseases caused by fungi from Ascomycetes, Basidiomycetes, and Oomycetes, for example, powdery mildew, rust, glume blight, net blotch, downy mildew, and late blight.
It is showed in practical use of pesticides that the repeated and exclusive application of one active compound to control the harmful fungi will result in the occurrence of rapid selectivity of the fungus strain in most cases. At present, the harmful fungi are controlled by using mixtures of compounds with different activities for the purpose of reducing the hazard of the selectivity of the resistant fungus strain. By combining active compounds having different mechanisms of action, the resistance development can be slowed down, the application rate is reduced, and thus the control cost is lowered.
In view of the technical problems above of resistance and persistence in soil of the fungicides in practical use, two fungicides of different mechanisms of fungicidal action are screened out and combined, to improve the control effect of the fungicides, retard the resistance development, reduce the application rate, and lower the control cost.
To solve the above technical problems, the present invention provides a fungicidal composition. The composition comprises active ingredients A and B. The active ingredient A is benziothiazolinone, the active ingredient B is one selected from benthiavalicarb-isopropyl, zoxamide, prothioconazole, boscalid, fenamidone, fluopicolide, famoxadone, pyraclostrobin, picoxystrobin or fluazinam. The inventors find through tests that the fungicidal composition has an obvious synergistic effect, and importantly, the application rate is reduced, such that the cost is lowered. The ingredients A and B have different chemical structures and distinct mechanisms of action, by which the fungicidal spectrum can be broadened and the occurrence and development rate of resistance of the pathogens can be delayed to some extent when combined. Moreover, the ingredients A and B have no cross resistance.
In the fungicidal composition, the weight ratio of the ingredient A to the ingredient B is from 1:50-50:1, and preferably 1:30-30:1, and more preferably 1:20-20:1 or 1:10-30:1 and most preferably 1:10-10:1 to achieve a much significant synergistic effect.
The fungicidal composition according to the present invention comprises 5-85% by weight of the active ingredient and 95-15% by weight of pesticide adjuvants. Further, the composition is prepared into pesticidally acceptable formations with the active ingredients and the pesticide adjuvants.
The present invention provides use of the fungicidal composition comprising the ingredient A (benziothiazolinone) and the ingredient B (benthiavalicarb-isopropyl, zoxamide, prothioconazole, boscalid, fenamidone, fluopicolide, famoxadone, pyraclostrobin, picoxystrobin, or fluazinam) in the control of diseases on crops in the agricultural area.
When used in controlling the diseases on crops, the fungicidal composition of the present invention may be optionally used for seed impregnation, sprayed onto the leaves by reconstitution with water during the growth period of the crops, or applied onto the surface of the target objects, depending on the different diseases to be controlled.
The composition may further comprise a carrier, an adjuvant and/or a surfactant. A commonly used adjuvant may be blended during application.
The suitable adjuvant may be a solid or liquid that is generally a material commonly used in the preparation of formulations, for example, a natural or regenerated mineral substance, a solvent, a dispersing agent, a wetting agent, an adhesive, a thickener, a binder or a fertilizer.
The composition of the present invention may be applied by administering the composition of the present invention to the aboveground parts of plants, in particular to the leaves or leaf surface thereof. The application frequency and rate depend on the pathogen biology and the climatic and maintenance conditions. The locus where the plant is growing, for example paddy field, may be impregnated with a liquid formulation of the composition, or the composition is incorporated in solid form into the soil, for example, in granular form (soil application) or penetrates the plant through the roots via the soil (systemic action). Alternatively, the occurrence of diseases may be eradicated and prevented by coating or immersing the seeds.
The composition may be used by applying the active ingredients alone or in admixture with additives.
The composition of the present invention may be prepared into various formulations, for example, a wettable powder, a suspension, an oily suspension, water dispersible granules, an aqueous emulsion, or a microemulsion. Depending on the properties of the compositions, the objectives intended to be achieved by applying the compositions, and the environmental conditions, the compositions may be applied by spraying, atomizing, dusting, scattering, or pouring.
The composition of the present invention may be prepared into various formulations through known processes. The active ingredients may be uniformly mixed with an adjuvant such as a solvent or a solid carrier and a surfactant if needed, and ground to prepare a desired formulation.
The solvent may be selected from aromatic hydrocarbons containing preferably 8 to 12 carbon atoms, for example, a xylene mixture, substituted benzene, or a phthalate ester, for example, dibutyl or dioctyl phthalate; aliphatic hydrocarbons, for example, cyclohexane or paraffin; alcohols, glycols and ethers and esters thereof, for example, ethanol, ethylene glycol, and ethylene glycol monomethyl ether; ketones, for example, cyclohexanone; high-polarity solvents, for example, N-methyl-2-pyrrolidone, dimethyl sulfoxide, or dimethyl formamide; and vegetable oils, for example, soy bean oil.
The solid carrier includes for example natural mineral fillers generally used for powders and dispersible powders, for example, talc, kaolin, montmorillonite or activated bauxite. To manage the physical properties of the composition, highly dispersive silicic acid or highly dispersive absorbent polymer carrier may also be added, for example, granular adsorptive carrier or non-adsorptive carrier. The suitable granular adsorptive carrier is porous, for example, pumice, soapy clay or bentonite. The suitable non-adsorptive carrier includes for example calcite or sand. Moreover, a large amount of inorganic or organic material that is pre-prepared into granules and especially dolomite may be used as the carrier.
As desired by the chemical nature of the active ingredients in the composition according to the present invention, the suitable surfactant includes ligninsulfonic acid, naphthalenesulfonic acid, phenolsulfonic acid, alkaline earth metal or amine salts, alkylarylsulfonates, alkylsulfates, alkylsulfonates, fatty alcohol sulfates, fatty acids and ethylene glycol sulfated fatty alcohol ethers, condensation products of sulfonated naphthalene and naphthalene derivatives with formaldehyde, condensation products of naphthalene or naphthalenesulfonic acid with phenol and formaldehyde, polyoxyethylene octyl phenyl ethers, ethoxylated iso-octylphenol, octylphenol, nonylphenol, alkylaryl polyethylene glycol ethers, tributylphenyl polyethylene glycol ether, tristearylphenyl polyethylene glycol ether, alkylaryl polyether alcohols, ethoxylated castor oil, polyoxyethylene alkyl ethers, condensation products of ethylene oxide, ethoxylated polyoxypropylene, polyethylene glycol ether laurate acetal, sorbates, waste lignin sulfite liquor, and methyl cellulose.
The two active ingredients in the fungicidal composition of the present invention have a synergistic effect, such that the activity of the composition is obviously higher than the respective activity or expected sum of the respective activity of single compounds alone. The synergistic effect leads to a reduced application rate, a broadened fungicidal spectrum, fast onset of action, and a prolonged control effect, whereby the fungi harmful to plants can be well controlled only by means of one or several applications, and the underlying application interval is widened. In this application, the above effect is further confirmed through examples of control tests on grape downy mildew, wheat rust, potato late blight, wheat powdery mildew, tomato grey mold, and grape anthracnose respectively. These features are particularly important in practice of controlling the fungi harmful to plants.
The fungicidal composition of the present invention exhibits the following additional features. 1. The composition of the present invention has an obvious synergistic effect. 2. Because the two individual agents in the composition of the present invention have highly different structures and completely different mechanisms of action, no cross resistance exists, such that the problem of resistance development occurred due to the use of single agents alone can be retarded. 3. The composition of the present invention is safe for crops, and good in the control effect. It is demonstrated through tests that the fungicidal composition of the present invention has stable chemical properties and a significant synergistic effect since the two active ingredients therein exhibit an obvious synergistic and complementary effect on the target organisms.
To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention is described in further detail with reference to examples. It should be understood that specific examples described herein are merely provided for explaining, instead of limiting the present invention. Any modifications, equivalent replacements, and improvements made without departing from the spirit and principle of the present invention fall within the protection scope of the present invention.
The percentages given in all the formulations in the examples below are all weight percentages. The various formulations are processed from the composition of the present invention by a process known in the prior art which may be varied as desired.
The formulations processed from the fungicidal composition of the present invention are those known in the prior art. For intuitively and clearly show the synergistic effect between the active ingredients of the present invention, only the wettable powder is optionally prepared in the preparation examples of formulations and used as the pesticide formulation to validate the synergistic effect between the active ingredients.
The active ingredients benziothiazolinone and one of benthiavalicarb-isopropyl, zoxamide, prothioconazole, boscalid, fenamidone, fluopicolide, famoxadone, pyraclostrobin, picoxystrobin or fluazinam were fully mixed with various adjuvants and fillers in proportion, and ground by an ultra-fine grinder, to obtain a wettable powder.
benziothiazolinone 60%, benthiavalicarb-isopropyl 2%, a sodium alkyl naphthalene sulfonate 4%, sodium dodecyl sulfonate 3%, ammonium sulfate 3%, and light calcium carbonate q.s. to 100%.
benziothiazolinone 25%, benthiavalicarb-isopropyl 25%, sodium lignin sulfonate 6%, sodium dodecyl sulfonate 3%, xanthan gum 1%, sodium carboxymethyl starch 1%, and attapulgite clay q.s. to 100%.
benziothiazolinone 2%, benthiavalicarb-isopropyl 63%, sodium lignin sulfonate 5%, a sodium methylnaphthalene sulfonate formaldehyde condensate 7%, sodium dodecyl sulfate 3%, and diatomaceous earth q.s. to 100%
benziothiazolinone 83%, zoxamide 2%, ammonium sulfate 1%, sodium alginate 2%, a sodium methylnaphthalene sulfonate formaldehyde condensate 1%, organic silicone 1%, and bentonite q.s. to 100%
benziothiazolinone 15%, zoxamide 15%, sodium dodecyl sulfonate 2%, a sodium alkyl naphthalene sulfonate 2%, ammonium sulfate 3%, and light calcium carbonate q.s. to 100%.
benziothiazolinone 2%, zoxamide 73%, a sodium methylnaphthalene sulfonate formaldehyde condensate 5%, sodium lignin sulfonate 4%, sodium dodecyl sulfate 3%, and diatomaceous earth q.s. to 100%.
benziothiazolinone 60%, prothioconazole 2%, sodium carboxymethyl starch 1%, sodium dodecyl sulfonate 4%, sodium lignin sulfonate 4%, xanthan gum 1%, and attapulgite clay q.s. to 100%.
benziothiazolinone 20%, prothioconazole 20%, ammonium sulfate 1%, sodium alginate 2%, a sodium methylnaphthalene sulfonate formaldehyde condensate 1%, organic silicone 1%, and bentonite q.s. to 100%.
benziothiazolinone 2%, prothioconazole 63%, a sodium methylnaphthalene sulfonate formaldehyde condensate 5%, sodium lignin sulfonate 4%, sodium dodecyl sulfate 3%, and diatomaceous earth q.s. to 100%.
benziothiazolinone 63%, boscalid 2%, calcium lignin sulfonate 2%, sodium dodecylbenzene sulfonate 1%, bentonite 2%, and attapulgite clay q.s. to 100%.
benziothiazolinone 30%, boscalid 30%, an alkylpolyoxyethylene ether sulfonate 1%, nekal 2%, bentonite 1.5%, white carbon black 2%, and diatomaceous earth q.s. to 100%.
benziothiazolinone 2%, boscalid 60%, a sodium alkylsulfonate 6%, sodium lignin sulfonate 6%, white carbon black 5%, and kaolin q.s. to 100%.
benziothiazolinone 60%, fenamidone 2%, a polyoxyethylene octyl phenyl ether 2%, sodium lignin sulfonate 6%, white carbon black 4%, and diatomaceous earth q.s. to 100%.
benziothiazolinone 25%, fenamidone 25%, calcium lignin sulfonate 7%, white carbon black 5%, sodium dodecylbenzene sulfonate 3%, and attapulgite clay q.s. to 100%.
benziothiazolinone 2%, fenamidone 60%, calcium lignin sulfonate 5%, bentonite 4%, a polyoxyethylene octyl phenyl ether 3%, and attapulgite clay q.s. to 100%.
benziothiazolinone 63%, fluopicolide 2%, a polyoxyethylene octyl phenyl ether 1%, sodium lignin sulfonate 2%, white carbon black 3%, and diatomaceous earth q.s. to 100%.
benziothiazolinone 25%, fluopicolide 25%, sodium dodecylbenzene sulfonate 3%, white carbon black 5%, calcium lignin sulfonate 7%, and attapulgite clay q.s. to 100%.
benziothiazolinone 3%, fluopicolide 62%, calcium lignin sulfonate 5%, bentonite 4%, a polyoxyethylene octyl phenyl ether 3%, and attapulgite clay q.s. to 100%.
benziothiazolinone 58%, famoxadone 2%, sodium dodecylbenzene sulfonate 2%, bentonite 1%, calcium lignin sulfonate 2%, and attapulgite clay q.s. to 100%.
benziothiazolinone 25%, famoxadone 25%, sodium lignin sulfonate 6%, an alkylsulfonate 6%, white carbon black 11%, and kaolin q.s. to 100%.
benziothiazolinone 2%, famoxadone 58%, nekal 1%, an alkylpolyoxyethylene ether sulfonate 2%, bentonite 1.5%, white carbon black 2%, and diatomaceous earth q.s. to 100%.
benziothiazolinone 60%, pyraclostrobin 2%, a sodium alkyl naphthalene sulfonate 4%, sodium dodecyl sulfonate 3%, ammonium sulfate 3%, and light calcium carbonate q.s. to 100%.
benziothiazolinone 25%, pyraclostrobin 25%, sodium lignin sulfonate 6%, sodium dodecyl sulfonate 3%, xanthan gum 1%, sodium carboxymethyl starch 1%, and attapulgite clay q.s. to 100%.
benziothiazolinone 2%, pyraclostrobin 63%, sodium lignin sulfonate 5%, a sodium methylnaphthalene sulfonate formaldehyde condensate 7%, sodium dodecyl sulfate 3%, and diatomaceous earth q.s. to 100%.
benziothiazolinone 63%, picoxystrobin 2%, sodium alginate 3%, ammonium sulfate 2%, a sodium methylnaphthalene sulfonate formaldehyde condensate 1%, organic silicone 1%, and bentonite q.s. to 100%.
benziothiazolinone 15%, picoxystrobin 15%, sodium dodecyl sulfonate 2%, a sodium alkyl naphthalene sulfonate 2%, ammonium sulfate 3%, and light calcium carbonate q.s. to 100%.
benziothiazolinone 2%, picoxystrobin 73%, a sodium methylnaphthalene sulfonate formaldehyde condensate 5%, sodium lignin sulfonate 4%, sodium dodecyl sulfate 3%, and diatomaceous earth q.s. to 100%.
benziothiazolinone 60%, fluazinam 2%, ammonium sulfate 3%, sodium carboxymethyl starch 1%, sodium dodecyl sulfonate 4%, sodium lignin sulfonate 4%, xanthan gum 1%, and attapulgite clay q.s. to 100%.
benziothiazolinone 20%, fluazinam 20%, ammonium sulfate 1%, sodium alginate 2%, a sodium methylnaphthalene sulfonate formaldehyde condensate 1%, organic silicone 1%, and bentonite q.s. to 100%.
benziothiazolinone 2%, fluazinam 73%, a sodium methylnaphthalene sulfonate formaldehyde condensate 5%, sodium lignin sulfonate 4%, sodium dodecyl sulfate 3%, and diatomaceous earth q.s. to 100%.
1. Toxicity test of benziothiazolinone combined respectively with benthiavalicarb-isopropyl, zoxamide, prothioconazole, boscalid, fenamidone, fluopicolide, famoxadone, pyraclostrobin, picoxystrobin, and fluazinam on downy mildew pathogens of grape
Test target organisms: downy mildew pathogens of grape
Based on the test grade scale, the disease development on the leaves of the whole grape plant was investigated, and the disease index and control effect were calculated.
The control effect was converted into probability (y), the concentration of the agents (μg/ml) in solution was converted into a logarithmic value (x), the toxic regression equation and the median inhibition concentration EC50 were calculated by least square method, and the toxicity index and the co-toxicity coefficient (CTC) of the agents were calculated by SUN Peiyun method.
Actual toxicity index (ATI)=(EC50 of standard/EC50 of test agent)*100
Theoretical toxicity index (TTI)=toxicity index of agent A*percentage content of A in the mixture+toxicity index of agent B*percentage content of B in the mixture
Co-toxicity coefficient (CTC)=[actual toxicity index (ATI) of the mixture/theoretical toxicity index (TTI) of the mixture]*100
Where CTC≦80, the composition exhibits an antagonistic effect; where 80<CTC<120, the composition exhibits an additive effect, and where CTC≧120, the composition exhibits a synergistic effect.
(1) Toxicity Test of Benziothiazolinone Combined with Benthiavalicarb-Isopropyl on Downy Mildew Pathogens of Grape
The results (in Table 1) show that the control effect of the combination of benziothiazolinone with benthiavalicarb-isopropyl on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
(2) Toxicity Test of Benziothiazolinone Combined with Zoxamide on Downy Mildew Pathogens of Grape
The results (in Table 2) show that the control effect of the combination of benziothiazolinone with zoxamide on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
(3) Toxicity Test of Benziothiazolinone Combined with Prothioconazole on Downy Mildew Pathogens of Grape
The results (in Table 3) show that the control effect of the combination of benziothiazolinone with prothioconazole on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
(4) Toxicity Test of Benziothiazolinone Combined with Boscalid on Downy Mildew Pathogens of Grape
The results (in Table 4) show that the control effect of the combination of benziothiazolinone with boscalid on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
(5) Toxicity Test of Benziothiazolinone Combined with Fenamidone on Downy Mildew Pathogens of Grape
The results (in Table 5) show that the control effect of the combination of benziothiazolinone with fenamidone on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
(6) Toxicity Test of Benziothiazolinone Combined with Fluopicolide on Downy Mildew Pathogens of Grape
The results (in Table 6) show that the control effect of the combination of benziothiazolinone with fluopicolide on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
(7) Toxicity Test of Benziothiazolinone Combined with Famoxadone on Downy Mildew Pathogens of Grape
The results (in Table 7) show that the control effect of the combination of benziothiazolinone with famoxadone on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
(8) Toxicity Test of Benziothiazolinone Combined with Pyraclostrobin on Downy Mildew Pathogens of Grape
The results (in Table 8) show that the control effect of the combination of benziothiazolinone with pyraclostrobin on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
(9) Toxicity Test of Benziothiazolinone Combined with Picoxystrobin on Downy Mildew Pathogens of Grape
The results (in Table 9) show that the control effect of the combination of benziothiazolinone with picoxystrobin on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
(10) Toxicity Test of Benziothiazolinone Combined with Fluazinam on Downy Mildew Pathogens of Grape
The results (in Table 10) show that the control effect of the combination of benziothiazolinone with fluazinam on downy mildew of grape is significantly improved, suggesting that the combination has an obvious synergistic effect on downy mildew pathogens of grape.
2. Toxicity Test of Benziothiazolinone Combined Respectively with Pyraclostrobin, Boscalid, Benthiavalicarb-Isopropyl, Zoxamide, and Fenamidone on Late Blight Pathogens of Potato
The test method was the same as above. (The test results are shown in Tables 11, 12, 13, 14, and 15 respectively)
(1) Toxicity Test of Benziothiazolinone Combined with Pyraclostrobin on Late Blight Pathogens of Potato
The results (in Table 11) show that the control effect of the combination of benziothiazolinone with pyraclostrobin on late blight of potato is significantly improved, suggesting that the combination has an obvious synergistic effect on late blight pathogens of potato.
(2) Toxicity Test of Benziothiazolinone Combined with Boscalid on Late Blight Pathogens of Potato
The results (in Table 12) show that the control effect of the combination of benziothiazolinone with boscalid on late blight of potato is significantly improved, suggesting that the combination has an obvious synergistic effect on late blight pathogens of potato.
(3) Toxicity Test of Benziothiazolinone Combined with Benthiavalicarb-Isopropyl on Late Blight Pathogens of Potato
The results (in Table 13) show that the control effect of the combination of benziothiazolinone with benthiavalicarb-isopropyl on late blight of potato is significantly improved, suggesting that the combination has an obvious synergistic effect on late blight pathogens of potato.
(4) Toxicity Test of Benziothiazolinone Combined with Zoxamide on Late Blight Pathogens of Potato
The results (in Table 14) show that the control effect of the combination of benziothiazolinone with zoxamide on late blight of potato is significantly improved, suggesting that the combination has an obvious synergistic effect on late blight pathogens of potato.
(5) Toxicity Test of Benziothiazolinone Combined with Fenamidone on Late Blight Pathogens of Potato
The results (in Table 15) show that the control effect of the combination of benziothiazolinone with fenamidone on late blight of potato is significantly improved, suggesting that the combination has an obvious synergistic effect on late blight pathogens of potato.
3. Toxicity Test of Benziothiazolinone Combined Respectively with Fluazinam, Prothioconazole, Picoxystrobin, Fluopicolide, and Famoxadone on Rust Pathogens of Wheat
Test target organism: rust pathogens of wheat
The test method was the same as above. (The test results are shown in Tables 16, 17, 18, 19, and 20 respectively)
(1) Toxicity Test of Benziothiazolinone Combined with Fluazinam on Rust Pathogens of Wheat
The results (in Table 16) show that the control effect of the combination of benziothiazolinone with fluazinam on rust of wheat is significantly improved, suggesting that the combination has an obvious synergistic effect on rust pathogens of wheat.
(2) Toxicity Test of Benziothiazolinone Combined with Prothioconazole on Rust Pathogens of Wheat
The results (in Table 17) show that the control effect of the combination of benziothiazolinone with prothioconazole on rust of wheat is significantly improved, suggesting that the combination has an obvious synergistic effect on rust pathogens of wheat.
(3) Toxicity Test of Benziothiazolinone Combined with Picoxystrobin on Rust Pathogens of Wheat
The results (in Table 18) show that the control effect of the combination of benziothiazolinone with picoxystrobin on rust of wheat is significantly improved, suggesting that the combination has an obvious synergistic effect on rust pathogens of wheat.
(4) Toxicity Test of Benziothiazolinone Combined with Fluopicolide on Rust Pathogens of Wheat
The results (in Table 19) show that the control effect of the combination of benziothiazolinone with fluopicolide on rust of wheat is significantly improved, suggesting that the combination has an obvious synergistic effect on rust pathogens of wheat.
(5) Toxicity Test of Benziothiazolinone Combined with Famoxadone on Rust Pathogens of Wheat
The results (in Table 20) show that the control effect of the combination of benziothiazolinone with famoxadone on rust of wheat is significantly improved, suggesting that the combination has an obvious synergistic effect on rust pathogens of wheat.
Test method: in early stage of disease development, the first spray was given immediately, and then the second application was given after 7 days. Each treatment included 4 plots of 20 square meters each. The disease development before application and 10 days after the second application was statistically investigated. Samples were collected from 5 locations in each plot at random, and 5 plants were investigated at each location by investigating the percentages of the disease spot area on the leaves relative to the leaf area of the whole plant and grading. The disease index and the control effect were calculated.
Anticipated control effect (%)=X+Y−XY/100 (where X and Y are the control effect of a single agent)
Grade Scale:
Grade 0: no disease spot;
Grade 1: number of disease spots on the leaf <5, and length <1 cm;
Grade 3: 6≦number of disease spots on the leaf ≦10, and length of some disease spots >1 cm;
Grade 5: 11≦number of disease spots on the leaf ≦25, some disease spots are contiguous, and the disease spot area is 10-25% of the leaf area;
Grade 7: number of disease spots on the leaf ≧26, the disease spots are contiguous, and the disease spot area is 26-50% of the leaf area;
Grade 9: the disease spots are contiguous, and the disease spot area is above 50% of the leaf area, or all the leaves all wilted.
1. Field Efficacy Test of Benziothiazolinone Combined Respectively with Pyraclostrobin, Prothioconazole, Picoxystrobin, Fluopicolide, and Famoxadone for Controlling Wheat Powdery Mildew
The test results (in Table 21) show that the control effect of the combination of benziothiazolinone with pyraclostrobin, prothioconazole, picoxystrobin, fluopicolide, and famoxadone respectively on wheat powdery mildew is significantly improved, suggesting that the combination has an obvious synergistic effect on wheat powdery mildew.
(2) Field Efficacy Test of Benziothiazolinone Combined Respectively with Fluazinam, Boscalid, and Fluopicolide for Controlling Tomato Grey Mold
The test results (in Table 22) show that the control effect of the combination of benziothiazolinone with fluazinam, boscalid, and fluopicolide respectively on tomato grey mold is significantly improved, suggesting that the combination has an obvious synergistic effect on tomato grey mold.
(3) Field Efficacy Test of Benziothiazolinone Combined Respectively with Benthiavalicarb-Isopropyl, Zoxamide, and Fenamidone for Controlling Grape Anthracnose
The test results (in Table 23) show that the control effect of the combination of benziothiazolinone with benthiavalicarb-isopropyl, zoxamide, and fenamidone respectively on grape anthracnose is significantly improved, suggesting that the combination has an obvious synergistic effect on grape anthracnose.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201310232680.5 | Jun 2013 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2013/079078 | 7/9/2013 | WO | 00 |
