Claims
- 1. An herbicidal composition comprising
- (a) an herbicidally effective amount of a thiolcarbamate having the formula ##STR16## 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 thiolcarbamate, said organophosphorus compound having the formula ##STR17## 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,
- n is zero or one, and
- R.sup.6 is selected from the group consisting of ##STR18## in which R.sup.7 is phenyl, and R.sup.8 and R.sup.9 are C.sub.1 -C.sub.4 alkyl.
- 2. An herbicidal composition according to claim 1 wherein
- R.sup.4 is selected from the group consisting of ethyl and ethoxy,
- R.sup.5 is selected from the group consisting of ethoxy and ethylthio, and
- R.sup.6 is selected from the group consisting of ##STR19## in which R.sup.7 is phenyl, R.sup.8 is isopropyl and R.sup.9 is ethyl.
- 3. An herbicidal composition according to claim 1 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-di-propylthiocarbamate and said organophosphorus compound has the formula ##STR20##
- 4. An herbicidal composition according to claim 1 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-di-propylthiocarbamate and said organophosphorus compound has the formula ##STR21##
- 5. An herbicidal compsoition according to claim 1 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-dipropylthiocarbamate and said organophosphorus compound has the formula ##STR22##
- 6. 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.
- 7. An herbicidal composition according to claim 6 wherein the thiocarbamate is either S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-dipropylthiocarbamate and the antidote is N,N-diallyl dichloroacetamide.
- 8. An herbicidal composition according to claim 6 wherein the weight ratio of said thiocarbamate herbicide to said antidote is from about 3:1 to about 25:1.
- 9. A method of extending the soil life of a thiocarbamate having the formula ##STR23## 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 thiolcarbamate, said organophosphorus compound having the formula ##STR24## 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,
- n is zero or one, and
- R.sup.6 is selected from the group consisting of ##STR25## in which R.sup.7 is phenyl, and R.sup.8 and R.sup.9 are C.sub.1 -C.sub.4 alkyl.
- 10. A method according to claim 9 wherein
- R.sup.4 is selected from the group consisting of ethyl and ethoxy,
- R.sup.5 is selected from the group consisting of ethoxy and ethylthio, and
- R.sup.6 is selected from the group consisting of ##STR26## in which R.sup.7 is phenyl, R.sup.8 is isopropyl and R.sup.9 is ethyl.
- 11. A method according to claim 9 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-dipropylthiocarbamate and said organophosphorus compound has the formula ##STR27##
- 12. A method according to claim 9 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-dipropylthiocarbamate and said organophosphorus compound has the formula ##STR28##
- 13. A method according to claim 9 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-dipropylthiocarbamate and said organophosphorus compound has the formula ##STR29##
- 14. A method according to claim 9 further comprising a nonphytotoxic antidotally effective amount of either N,N-diallyl dichloroacetamide or 2,2,5-trimethyl-N-dichloroacetyl oxazolidine.
- 15. A method according to claim 14 wherein the thiocarbamate is either S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-dipropylthiocarbamate and the antidote is N,N-diallyl dichloroacetamide.
- 16. A method according to claim 14 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. 496,781, filed May 20, 1983, now abandoned, which is a continuation of application Ser. No. 358,979, filed Mar. 17, 1982, now abandoned; which in turn is a continuation of Ser. No. 163,617, filed June 27, 1980, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (3)
Number |
Date |
Country |
0010178 |
Feb 1983 |
EPX |
713278 |
Aug 1954 |
GBX |
964793 |
Jul 1964 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Byers et al., Chem. Abst. vol. 77 (1977) 128777x. |
Nash, Weed Sci. vol. 16, No. 1 (1968), pp. 74-77. |
Continuations (2)
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Number |
Date |
Country |
Parent |
358979 |
Mar 1982 |
|
Parent |
163617 |
Jun 1980 |
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Continuation in Parts (1)
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Number |
Date |
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Parent |
496781 |
May 1983 |
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