Yield and quality of sugarcane cultivars raw material submitted to herbicides application

Abstract

Herbicides may cause toxicity to the crop and also negative effects on yield characteristics and industrial quality of sugarcane. This study evaluated the effects ametryn, trifloxysulfuron-sodium, ametryn + trifloxysulfuron-sodium and sulfentrazone herbicides over quality and stalk yield of RB867515, SP801816, SP803280, RB937570 and RB925211 cultivars. The experiment was conducted at the Federal University of Viçosa, Viçosa County, Minas Gerais State. A distinct behavior was observed for the cultivars in the presence of herbicides, both for quality as for the stalk yield. The quality showed greater variability among cultivars than among herbicide treatments that act directly on stalk production and indirectly in sugar production, being ametryn and sulfentrazone herbicides the ones that caused higher negative interference. SP803280 cultivar was the genotype with the lowest susceptibility to herbicides.