EVALUATION OF RAPTOR (IMAZAMOX) AND PIVOT (IMAZETAPHYR) HERBICIDES EFFICIENCY AND SELECTIVITY ON WEED CONTROL IN THE SOYBEAN CROP

This experiment was carried out at Escola de Agromia - Universidade Federal de Goiás, Goiás State, with the purpose of evaluating efficiency and selectivity of Raptor (Imazamox) and Pivot (Imazetapyr) on weed control in the soybean crop. Seven treatments were tested: 1-Raptor DG + Cicol (42g ai/ha); Raptor DG + Cicol (49g ai/ha); Pivot DG + Cicol (80g ai/ha); Pivot DG + Cicol (98g ai/ha), Pivot AS (100g ai/ha); Flex + Energic (250g ai/ha + 0.2%) not weeded control. These treatments were planted as randomized blocks design with four replications. The soybean cultivar was Emgopa 313 sowing in 50 cm spacing and 20 plants/m density. At third evaluation, the treatments controlled more than 90% of Sida rhombifolia L., Blainvillea rhomboidea Cass., Spermacoce latifolia Aubl., Commelina nudiflora L. and Ipomoea purpurea Lam. KEY-WORDS: Imazamox; imazetaphyr; soybean; weed.