Effectiveness of using the mixtures of herbicides flumioxazine and fluorochloridone in sunflower crops

Aim. This work is devoted to the search for potential partners integrated application of flumioxazine in sunflower crops. herbicide an inhibitor protoporphyrinogen oxidase (PPO) weed plants. The resistance this class herbicides not yet common today, compared other classes. Therefore, aimed at de- veloping flumioxazine-based compositions that effectively prevent emergence herbicide-resistant biotypes. Methods. interaction effects, control efficiency, and crop selectivity were studied when was used mixtures with acetochlor propisochlor (long-chain fatty acid synthesis (LCFAS) inhibitors), promethrin (electron transport (ET) photosystem 2 (PS 2) chloroplasts) fluorochloridone (inhibitor carotenoid by blocking activity phytoendesaturases (PDS)) both experiments on crops greenhouse using model objects. Results. studies have shown applied ET inhibitor, promethrin, antagonistic, resulting poor efficiency yield decrease. tank LCFAS inhibitors provide high but are low sunflowers. between within recommended rates additive. mixture 55 500 g/ha, respectively, selective In terms annual dicotyledons, exceeded, cereal species only slightly inferior (metolachlor + terbuthylazine). these rates, fluo- rochloridone provided par complex herbicide. Сonclusions. Among investigated herbicides, optimal partner use herbicide, PDS, fluorochloridone. Given differ their phytotoxicity mechanisms share a spectrum controlled species, factor minimizes likelihood