Claims
- 1. A method of extending the soil life of a thiocarbamate having the formula ##STR12## 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 ##STR13## in which R.sup.4 is C.sub.1 -C.sub.4 alkyl,
- R.sup.5 is selected from the group consisting of C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 cyanoalkylthio, and C.sub.1 -C.sub.4 alkylamino,
- R.sup.6 is selected from the group consisting of hydrogen, methyl, and carbomethoxy,
- R.sup.7 is selected from the group consisting of hydrogen and chlorine, and
- X is oxygen or sulfur.
- 2. A method according to claim 1 in which R.sup.4 is ethyl and R.sup.5 is ethoxy, cyanomethylthio, or isopropylamino.
- 3. A method according to claim 1 wherein said thiocarbamate is S-propyl N,N-di-n-propylthiocarbamate or S-ethyl N,N-diisobutylthiocarbamate and said organophosphorus compound has either the formula ##STR14##
- 4. A method according to claim 1 wherein said thiocarbamate is S-ethyl N,N-diisobutylthiocarbamate and an amount of an organophosphorus compound sufficient to extend the soil life of said thiocarbamate, said organophosphorus compound has the formula ##STR15##
- 5. A method according to caim 1 further comprising a nonphytotoxic antidotally effective amount of either N,N-diallyl dichloroacetamide or 2,2,5-trimethyl-N-dichloroacetyl oxazolidine.
- 6. A method according to claim 5 wherein the thiocarbamate herbicide is either S-ethyl N,N-diisobutylthiocarbamate or S-propyl N,N-di-n-propylthiocarbamate and the antidote is N,N-diallyl dichloroacetamide.
- 7. A method according to claim 5 wherein the weight ratio of said thiocarbamate to said antidote is from about 3:1 to about 25:1.
CROSS REFERENCE TO RELATED APPLICATIONS
This is a continuation-in-part of application Ser. No. 495,286, filed May 16, 1983, now abandoned which is a continuation of Ser. No. 359,725, filed Feb. 19, 1982, now abandoned; which in turn is a continuation of Ser. No. 163,747, filed June 27, 1980, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (2)
Number |
Date |
Country |
2658467 |
May 1978 |
DEX |
964793 |
Jan 1964 |
GBX |
Non-Patent Literature Citations (2)
Entry |
Nash, Weed Sci., vol. 16, No. 1 (1968) pp. 74-77. |
Byers et al., Chem. Abst., vol. 87 (1977) 128777x. |
Continuation in Parts (3)
|
Number |
Date |
Country |
Parent |
495286 |
May 1983 |
|
Parent |
359725 |
Feb 1982 |
|
Parent |
163747 |
Jun 1980 |
|