Claims
- 1. A method for preparing an extract from Inula species, said method comprising the steps of:
(a) contacting shoots and/or portions thereof with an alkaline aqueous solvent to form a solution and debris; and (b) removing the debris from the solution.
- 2. A method according to claim 1, wherein said removing step includes filtering the debris from the solution.
- 3. A method according to claim 1, wherein the shoots include leaves and stems of upper parts of the shoots.
- 4. A method according to claim 1, wherein the shoots or portions thereof are dried prior to said contacting step.
- 5. A method according to claim 4 including the step of grinding the dried shoots or portions thereof to form a powder.
- 6. A method according to claim 1, wherein the shoots or portions thereof are freshly cut.
- 7. A method according to claim 1, wherein the alkaline aqueous solvent comprises at least one amino compound.
- 8. A method according to claim 7, wherein the amino compound comprises an ammonium compound.
- 9. A method according to claim 7, wherein the amino compound is selected from the group consisting essentially of organic amines and heterocyclic amines.
- 10. A method according to claim 9, wherein the organic amine compound is selected from the group consisting essentially of ethylamine, ethylenediamine, diaminopropane, diethanolamine, triethanolamine, and butylamine.
- 11. A method according to claim 9, wherein the hetero cyclic amine compound is selected from the group consisting essentially of piperazine and piperidine.
- 12. A method according to claim 7, wherein the alkaline aqueous solvent comprises inorganic bases or salts thereof.
- 13. A method for protecting plants against fungal infection, said method comprising the steps of:
(a) preparing a fungicidal extract of Inula species by contacting shoots and/or portions thereof with an alkaline aqueous solvent to form an extract solution and debris; and (b) applying a fungicidally effective amount of the fungicidal extract to a plant for protecting the plant against fungal infection.
- 14. A method according to claim 13, wherein the plant includes grapevines, cucurbits, tomatoes, wheat, barley, onion, tobacco, crucifers, and potatoes.
- 15. A method according to claim 13, wherein the fungal infection is caused by phytopathogenic fungi including Oomycetes, Ascomycetes, Basidiomycetes and Fungi imperfecti classes.
- 16. A method according to claim 15, wherein the fungal infection is caused by a fungus including Cladosporium cucumerinum, Phytophthora infestans, Botrytis cinerea, Pseudoperonospora cubensis, Sphaerothecafuliginea, Plasmopara viticola, Uromyces appendiculatis, and Erysiphe graminis.
- 17. A method according to claim 13, wherein said preparing step includes filtering the debris from the solution.
- 18. A method according to claim 13, wherein the shoots include leaves and stems of upper parts of the shoots.
- 19. A method according to claim 13, wherein the shoots or portions thereof are dried prior to said contacting step.
- 20. A method according to claim 19 including the step of grinding the dried shoots or portions thereof to form a powder.
- 21. A method according to claim 13, wherein the shoots or portions thereof are freshly cut.
- 22. A method according to claim 13, wherein the alkaline aqueous solvent comprises at least one amino compound.
- 23. A method according to claim 22, wherein the amino compound comprises an ammonium compound.
- 24. A method according to claim 22, wherein the amino compound is selected from the group consisting essentially of organic amines and heterocyclic amines.
- 25. A method according to claim 24, wherein the organic amine compound is selected from the group consisting essentially of ethylamine, ethylenediamine, diaminopropane, diethanolamine, triethanolamine, and butylamine.
- 26. A method according to claim 24, wherein the heterocyclic amine compound is selected from the group consisting essentially of piperazine and piperidine.
- 27. A method according to claim 13, wherein the alkaline aqueous solvent comprises inorganic bases or salts thereof.
- 28. A method for preparing a fungicide derived from Inula species, said method comprising the step of:
combining a substantially powdered form of Inula shoots and/or portions thereof with a solid chemical to form a mixture which upon dissolution of the mixture in an aqueous solution, forms an alkaline aqueous solution which can be directly applied to plants to prevent fungal infection.
- 29. A method according to claim 28, wherein the solid chemical comprises at least one amino compound.
- 30. A method according to claim 29, wherein the amino compound comprises an ammonium compound.
- 31. A method according to claim 29, wherein the amino compound is selected from the group consisting essentially of organic amines and heterocyclic amines.
- 32. A method according to claim 31, wherein the organic amine compound is selected from the group consisting essentially of ethylamine, ethylenediamine, diaminopropane, diethanolamine, triethanolamine, and butylamine.
- 33. A method according to claim 31, wherein the heterocyclic compound is selected from the group consisting essentially of piperazine and piperidine.
- 34. A method according to claim 28, wherein the solid chemical comprises inorganic bases or salts thereof.
- 35. A method according to claim 28, wherein an emulsifier is added to the mixture.
- 36. A method according to claim 35, wherein the emulsifier comprises a surfactant.
- 37. A method according to claim 36, wherein the surfactant comprises sodium dodecyl sulfate.
- 38. A method according to claim 35, wherein the emulsifier comprises diatomaceous earth.
Parent Case Info
[0001] This application claims priority of U.S. Provisional Application Ser. No. 60/072,356 filed Jan. 23, 1998.
Provisional Applications (1)
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Number |
Date |
Country |
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60072356 |
Jan 1998 |
US |