| abstract |
Novel 4-amino-6-(heterocyclic)picolinic acids and their derivatives and 6-amino-2 (heterocyclic )pyrimidine-4-carboxylates and their derivatives are useful to control undesirable vegetation. The occurrence of undesirable vegetation, e.g., weeds, is a constant problem fadng famers in crops, pasture, and other settings. Weeds compete with crops and negatively impact crop yield. The use of chemical herbicides is an important tool in controlling undesirable vegetation. |