Claims
- 1. A method of accelerating the decomposition of an isoxazole and/or a dione pesticide comprising contacting said pesticide with halogen and/or hypohalite.
- 2. A method according to claim 1 in which the halogen is chlorine and the hypohalite is hypochlorite.
- 3. A method according to claim 1 in which the halogen and/or hypohalite are used in an aqueous liquid.
- 4. A method according to claim 3 in which the hypohalite is a salt with an alkali or alkaline earth metal.
- 5. A method according to claim 1 in which the hypohalite is sodium hypochlorite.
- 6. A method according to claim 1 in which the isoxazole and/or dione are of the formula:
- 7. A method according to claim 1 for treating water containing a low concentration of an isoxazole and/or dione pesticide which comprises contacting the water with halogen and/or hypohalite.
- 8. A method according to claim 7 in which the water is chlorinated to a concentration of 0.1 ppb to 0.5 ppm.
- 9. A method according to claim 1 for cleaning a surface which is contaminated or believed to be contaminated by a dione and/or isoxazole pesticide which method comprises applying to said surface an effective amount of an aqueous liquid containing halogen and/or hypohalite.
- 10. A method according to claim 9 in which the aqueous liquid is an aqueous solution containing 10−4 to 2 moles of chlorine per liter.
- 11. A method according to claim 10 in which the pH of the cleaning solution is from 7 to 9.
- 12. A method according to claim 1 for reducing the spread of isoxazole and/or dione pesticide from a first locus to a second locus which comprises applying to a third locus situated between the first locus and the second locus a halide and/or a hypohalite.
- 13. A method according to claim 1 to confer on a crop seed increased resistance to a herbicidal isoxazole and/or dione which method comprises treating the seed with halogen and/or hypohalite or providing on the surface of the seed a coating comprising halogen and/or hypohalite.
- 14. A method according to claim 1 in which the isoxazole and/or dione is selected from the group consisting of:
5-cyclopropyl-4-[2-chloro-3-ethoxy-4-(ethylsulphonyl)benzoyl]isoxazole; 4-(4-chloro-2-methylsulphonylbenzoyl)-5-cyclopropylisoxazole; 5-cyclopropyl-4-(2-methylsulphonyl-4-trifluoromethylbenzoyl)isoxazole; 4-(4-bromo-2-methylsulphonylbenzoyl)-5-cyclopropylisoxazole; 5-cyclopropyl-4-[4-fluoro-3-methoxy-2-(methylsulphonyl)benzoyl]isoxazole; 4-(4-bromo-2-methylsulphonylmethylbenzoyl)-5-cyclopropylisoxazole; ethyl 5-cyclopropyl-4-(2-methylsulphonyl-4-trifluoromethylbenzoyl)isoxazole-3-carboxylate; 2-[2-chloro-(4-methylsulphonyl)benzoyl]-1,3-cyclohexanedione; 2-[2-nitro-4-(methylsulphonyl)benzoyl]-1,3-cyclohexanedione; 2-(2,3-dihydro-5,8-dimethyl-1,1-dioxospiro[4H-1-benzothiin-4,2′-[1,3]dioxolan]-6-ylcarbonyl)cyclohexane-1,3-dione; 5-cyclopropyl-4-(2-methylsulphonyl-4-trifluoromethylbenzoyl)-3-methylthioisoxazole; and 2-cyano-3-cyclopropyl-1-(2-methylsulphonyl-4-trifluoromethylphenyl)propan-1,3-dione.
- 15. A method according to claim 14 in which the isoxazole and/or dione comprises 5-cyclopropyl-4-(2-methylsulphonyl-4-trifluoromethylbenzoyl)isoxazole.
- 16. A crop seed having increased resistance to a herbicidal isoxazole and/or dione, which seed comprises an effective amount of halogen and/or hypohalite either within the seed or at its surface or in a coating on the seed.
- 17. A seed according to claim 13 in which the amount of halogen is from 10−3 to 0.1% by weight.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This is a continuation of International Application No. PCT/EP99/09254, filed Nov. 16, 1999, designating the United States, which International Application was published by the International Bureau on May 25, 2000, in English, as WO 00/29070. Priority of the above-mentioned International Application and of U.S. Provisional Application No. 60/108,603, filed Nov. 16, 1998, is hereby claimed. Each of the above-mentioned applications are hereby incorporated by reference in their entirety.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60108603 |
Nov 1998 |
US |
Continuations (1)
|
Number |
Date |
Country |
Parent |
PCT/EP99/09254 |
Nov 1999 |
US |
Child |
09855607 |
May 2001 |
US |