Effects of interaction and effectiveness of weed control when using tank mixtures of herbicides in maize crops

Many countries are now facing the problem of increase in resistant biotypes weeds. The spread herbicide-resistant weeds across agrophytocenoses poses a threat decrease effectiveness use herbicides agricultural fields. In order to develop anti-resistant compositions for protection maize (Zea mays L.) crops, we studied effects interaction and efficiency weed control greenhouse field experiments. We possibility combined 4-hydroxyphenyl pyruvate dioxygenase-inhibiting herbicide tolpyralate inhibitor transport electrons photosystem 2 chloroplasts – terbuthylazine acetolactate synthase-inhibiting rimsulfuron. experiments on model objects, found that mixtures with rimsulfuron was antagonistic, but antagonism may be overcome by increasing rate applied At joint terbuthylazine, synergistic phytotoxic effect observed, caused blocking electron-transport chain intensity formation reactive oxygen species. According results experiments, drew conclusion efficacy using mixture depends species composition presence rimsulfuron-resistant weeds, becomes antagonistic even conditions increased application rimsulfuron, thus significantly decreases. same time, after applying tank character maintained toward broad range grass dicotyledonous providing high crop protection. were analyzed presented article allow one emergence also effectively already existing biotypes.