Controle de soja voluntária com ethoxysulfuron em feijão associado a adjuvantes

Abstract

The objective of this work was to evaluate the control of volunteer soybean and the selectivity of the herbicide ethoxysulfuron associated to adjuvants in the bean culture. The experiment was set up in a randomized complete block design with four replications. Volunteer soybean was established in the area by sowing a previous sowing to bean sowing with fertilizer sowing machine. The cultivars of black beans (Fepagro triunfo) and carioca beans (BRS FC402) were assigned to the plot and the adjuvants (vegetable oils - Aureo, Agro-oil and Active, minerals - Joint Oil, Hoefix and Assit treatment without the use of oil - associated with the herbicide ethoxysulfuron). The treatments were applied when the bean presented the first trefoil and was in stage V3. The tested treatments included the isolated application using two o. The variables analyzed were control of soybean volunteers and phytotoxicity of bean cultivars at 14, 21, 28 and 35 days after application, number of pods per plant, number of grains per plant and mass of one thousand grains and productivity. It was observed selectivity for the two bean cultivars, high control of the voluntary soybean, maintaining for the number of pods per plant, the number of grains per plant, the mass of one thousand grains and the grain yield of the Rioja bean was not influenced by application of ethoxysulfuron applied in isolation or associated with the different adjuvants. The black bean grain yield was higher when the Agro-Oil adjuvant associated with ethoxysulfuron was applied.