THE EFFECT OF POST EMERGENCE HERBICIDES AND THEIR MIXTURES ON GRASS AND BROADLEAF WEED CONTROL IN BARLEY (HORDEUM VULGARE L.)

Abstract

The experiments were conducted on winter barley between 2017 and 2019 to measure the effectiveness of four post-emergence herbicides also their tank mixture on weeds and in 2-rowed winter barley (Hordeum vulgare L.) cv. Sahin-91 fields in Diyarbakir, Turkey. Wild oats (Avena sterilis L.) and mustard (Sinapis arvensis L.) were identified as two of the most troublesome weeds. When weed control efficiency (92%), weed index (9.88%) and crop injury (1.08%) were evaluated as a whole in pinoxaden 50 g/l EC 0.9 1 ha(-1) and 2.4-D ethylhexyl ester 452.42 g/l + florasulam 6.25 g/l SE 0.5 1 ha(-1) tank mixture, it was found that it was the most suitable mixture. The tank mixture of these two commercial herbicides can apply post-emergence (beginning of March) successfully for controlling the grass and broad-leaved weeds in winter barley. Determination of the right herbicide tank combinations in agriculture is necessary for sustainable weed management, as it reduces input costs, prevents yield losses and less pollutes the ecological environment.