Possibilities of weed control in sugar beet crop after desmedipham withdrawn and possible non-approval of further use of phenmedipham and chloridazone

Abstract

The field research were carried out in 2019–2020, in Picobella sugar beet. The aim of the study was to develop an alternative weed control program without phenmedipham, desmedipham and chloridazone. The tested mixtures containing metamitron, ethofumesate, triflusulfuron-methyl, and lenacil used in various combinations together with the Atpolan BIO 80 EC adjuvant effectively controlled Fat hen (Chenopodium album) up to phase 1 of a pair of true leaves (BBCH 12). Excluding ethofumesate from mixtures of metamitron (700 g/ha) and triflusulfuron-methyl (15 g/ha) reduces the effectiveness of weed control. In the absence of ethofumesate, the effectiveness of the action is improved by increasing the dose of metamitron (1050 g/ha) and adding lenacil (100 g/ha) to the composition of the mixture. The conducted research proved that it is possible to effectively protect beet crops against Fat hen (Ch. album) after the desmedipham withdrawn and possible non-approval of phenmedipham and chloridazone.