SELETIVIDADE DE HERBICIDAS PÓS-EMERGENTES APLICADOS COM DIFERENTES VOLUMES DE CALDA NO FEIJOEIRO COMUM

Abstract

The interference imposed by weeds on bean crop stands out among phytosanitary problems. However, the use of herbicides is an effective method of control, and should be used in a careful way so as not to cause phytotoxicity to the crop. The objective of this work was to evaluate the phytotoxicity of the herbicides Flex® (fomesafen, 250 g.L-1), Basagran® (bentazon, 600 g.L-1) and Ampla (bentazon, 600 g.L-1 + imazamox, 28 g.L-1 (50, 100 and 150 L.ha-1) on the bean crop, as control experimental units were maintained without herbicide application. Plant height, stalk diameter, number of triphols and dry matter were evaluated . The herbicides Basagran® and Amplo® caused the greatest phytotoxicity in bean plants, the herbicide Flex caused less phytotoxification to bean. The flow volume of 100 L.ha-1 caused greater plant phytotoxicity. There was no influence on the growth characteristics of the bean plants as a function of the treatments with the post-emergent herbicides applied with different volumes of syrup.