Agents for inhibiting plant growth
AssigneeCiba-Geigy Corporation
InventorHanspeter Fischer
Life of this patent
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Abstract
Agents and methods of using 4,6-(subst.)diamino-5-nitro-pyrimidines, most of which are new, which possess plant growth inhibiting, in particular herbicidal properties. The agents may also contain salts of the said pyrimidine derivatives.Preferably the 4,6-(subst.)diamino-5-nitro-pyrimidines are also substituted in the 2-position, especially by methyl, ethyl, methoxy or trihalomethyl.
Claims8
A herbicidal composition comprising a herbicidally effective amount of a 5-nitropyrimidine derivative of the formula I ##STR8## wherein R.sub.1 represents alkyl with 1 to 6 carbon atoms, alkenyl with at most 5 carbon atoms, cycloalkyl with 3 to 6 carbon atoms, cyanoalkyl, or hydroxyalkyl, each having alkyls of from 1 to 6 carbon atoms, R.sub.2 and R.sub.3 each independently represents hydrogen or alkyl with 1 to 4 carbon atoms, R.sub.4 represents alkyl with 2 to 6 carbon atoms or cycloalkyl with 3 to 6 carbon atoms, and R.sub.5 represents methoxy, alkyl of 1 to 4 carbon atoms, dimethylamino or trihalomethyl, or the addition salt of such a nitro-pyrimidine derivative with non-phytotoxic inorganic or organic acids;
- together with a suitable inert carrier therefor.
Dependencies are inferred from the claim text.