Claims
- 1. An herbicidal composition comprising
- (a) an herbicidally effective amount of a thiocarbamate having the formula ##STR21## in which R.sup.1, R.sup.2, and R.sup.3 are independently C.sub.2 -C.sub.4 alkyl with the proviso that wherein R.sup.1 is ethyl and R.sup.2 is propyl, R.sup.3 is other than propyl; and
- (b) an amount of an organophosphorus compound sufficient to extend the soil life of said thiocarbamate, said organophosphorus compound having the formula ##STR22## in which R.sup.4 is selected from the group consisting of C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.4 alkoxy,
- R.sup.5 is selected from the group consisting of C.sub.1 -C.sub.4 alkoxy and C.sub.1 -C.sub.4 alkylthio,
- R.sup.6 is selected from the group consisting of C.sub.2 -C.sub.6 alkylene and C.sub.2 -C.sub.6 alkenylene,
- R.sup.7 is selected from the group consisting of phenyl, C.sub.1 -C.sub.4 alkyl and C.sub.2 -C.sub.4 alkenyl, the latter optionally substituted with up to two halogens, and
- X is oxygen or sulfur with the proviso that where R.sup.1 is ethyl, R.sup.2 and R.sup.3 are both isobutyl, R.sup.4 and R.sup.5 are both methoxy, R.sup.6 is methylene and X is oxygen, R.sup.7 is other than phenyl.
- 2. An herbicidal composition according to claim 1 wherein
- R.sup.4 is selected from the group consisting of C.sub.1 -C.sub.2 alkyl and C.sub.1 -C.sub.2 alkoxy,
- R.sup.5 is selected from the group consisting of C.sub.1 -C.sub.2 alkoxy and C.sub.1 -C.sub.2 alkylthio,
- R.sup.6 is selected from the group consisting of C.sub.2 -C.sub.4 alkylene, and C.sub.2 -C.sub.3 alkenylene, and
- R.sup.7 is selected from the group consisting of phenyl, C.sub.1 -C.sub.4 alkyl, and C.sub.1 -C.sub.3 alkenylene.
- 3. An herbicidal composition according to claim 1 wherein said thiocarbamate is S-propyl N,N-di-n-propylthiocarbamate and said organophosphorus compound has the formula ##STR23##
- 4. An herbicidal composition according to claim 1 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate and said organophosphorus compound has the formula ##STR24##
- 5. An herbicidal composition according to claim 1 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate and said organophosphorus compound has the formula ##STR25##
- 6. An herbicidal composition according to claim 1 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate is S-propyl N,N-dipropylthiocarbamate and wherein
- R.sup.4 is methoxy or ethyl,
- R.sup.5 is methoxy, ethoxy or methylthio,
- R.sup.6 is ethylene, methylethylene, dimethylethylene or ethenylene, and
- R.sup.7 is phenyl, isobutyl, allyl, dichloroallyl or methyl.
- 7. An herbicidal composition according to claim 1 further comprising a non-phytotoxic antidotally effective amount of either N,N-diallyl dichloroacetamide or 2,2,5-trimethyl-N-dichloroacetyl oxazolidine.
- 8. An herbicidal composition according to claim 7 wherein the thiocarbamate herbicide is either S-ethyl N,N-di-isobutyl thiocarbamate or S-propyl, N,N-dipropyl thiocarbamate and the antidote is N,N-diallyl dichloroacetamide.
- 9. An herbicidal composition according to claim 7 wherein the weight ratio of said thiocarbamate herbicide to said antidote is from about 3:1 to about 25:1.
- 10. A method of extending the soil life of a thiocarbamate having the formula ##STR26## in which R.sup.1, R.sup.2, and R.sup.3 are independently C.sub.2 -C.sub.4 alkyl with the proviso that wherein R.sup.1 is ethyl and R.sup.2 is propyl, R.sup.3 is other than propyl; which comprises applying to the soil containing said thiocarbamate or to which said thiocarbamate is to be applied an effective amount of an organophosphorus compound having the formula ##STR27## in which R.sup.4 is selected from the group consisting of C.sub.1 -C.sub.4 alkyl and C.sub.1 -C.sub.4 alkoxy,
- R.sup.5 is selected from the group consisting of C.sub.1 -C.sub.4 alkoxy and C.sub.1 -C.sub.4 alkylthio,
- R.sup.6 is selected from the group consisting of C.sub.2 -C.sub.6 alkylene and C.sub.2 -C.sub.6 alkenylene,
- R.sup.7 is selected from the group consisting of phenyl, C.sub.1 -C.sub.4 alkyl and C.sub.2 -C.sub.4 alkenyl, the latter optionally substituted with up to two halogens, and
- X is oxygen or sulfur with the proviso that where R.sup.1 is ethyl, R.sup.2 and R.sup.3 are both isobutyl, R.sup.4 and R.sup.5 are both methoxy, R.sup.6 is methylene and X is oxygen, R.sup.7 is other than phenyl.
- 11. A method according to claim 10 wherein
- R.sup.4 is selected from the group consisting of C.sub.1 -C.sub.2 alkyl and C.sub.1 -C.sub.2 alkoxy,
- R.sup.5 is selected from the group consisting of C.sub.1 -C.sub.2 alkoxy and C.sub.1 -C.sub.2 alkylthio,
- R.sup.6 is selected from the group consisting of C.sub.2 -C.sub.4 alkylene, and C.sub.2 -C.sub.3 alkenylene, and
- R.sup.7 is selected from the group consisting of phenyl, C.sub.1 -C.sub.4 alkyl, and C.sub.1 -C.sub.3 alkenylene.
- 12. The method according to claim 10 wherein said thiocarbamate is S-propyl N,N-di-n-propylthiocarbamate and said organophosphorus compound has the formula ##STR28##
- 13. A method according to claim 10 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate and said organophosphorus compound has the formula ##STR29##
- 14. A method according to claim 10 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate and said organophosphorus compound has the formula ##STR30##
- 15. A method according to claim 10 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-dipropylthiocarbamate and wherein
- R.sup.4 is methoxy or ethyl,
- R.sup.5 is methoxy, ethoxy or methylthio,
- R.sup.6 is ethylene, methylethylene, dimethylethylene or ethenylene, and
- R.sup.7 is phenyl, isobutyl, allyl, dichloroallyl or methyl.
- 16. A method according to claim 10 further comprising a non-phytotoxic antidotally effective amount of either N,N-diallyl dichloroacetamide or 2,2,5-trimethyl-N-dichloroacetyl oxazolidine.
- 17. A method according to claim 16 wherein the thiocarbamate herbicide is either S-ethyl N,N-di-isobutyl thiocarbamate or S-propyl N,N-dipropyl thiocarbamate and the antidote is N,N-diallyl dichloroacetamide.
- 18. A method according to claim 16 wherein the weight ratio of said thiocarbamate herbicide to said antidote is from about 3:1 to about 25:1.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of Application Ser. No. 495,285, filed May 16, 1983, now abandoned which is a continuation of application Ser. No. 350,793, filed Feb. 22, 1982, now abandoned; which in turn is a continuation of application Ser. No. 163,675, filed June 27, 1980, now abandoned.
US Referenced Citations (4)
Continuations (2)
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Number |
Date |
Country |
Parent |
350793 |
Feb 1982 |
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Parent |
163675 |
Jun 1980 |
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Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
495285 |
May 1983 |
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