EFFICIENCY OF DIFFERENT HERBICIDES IN THE CONTROL OF Digitaria insularis L. IN COFFEE CROP

Abstract

Among the main species of weeds in coffee growing, we highlight the Digitaria insularis L., which is increasingly difficult to control, as it has a large number of seeds, high power of dissemination and high germination rate, which may have been some of the factors that contributed to the species showing resistance to some herbicides. The objective of this research was to evaluate the efficiency of different herbicides, in the control of Digitaria insularis L. in coffee plantations, being carried out in a plantation of approximately 4 years, variety Catuaí Vermelho IAC 144, experimental design in randomized blocks (DBC), containing 5 treatments and 4 repetitions, totaling 20 experimental plots. The treatments were: Roundup Original (Glyphosate 445 g/L), Select (Cletodim 240 g/L + vegetable oil 930 g /L), Verdict R (Haloxifope-P-methyl 124,7 g/L + vegetable oil 930 g/L), Fusilade (Fluazipofe-P-butyl 250 g/L) and Control (without the addition of herbicides). The percentage of death of the Digitaria insularis L. was made visually at 7, 15 and 30 DAA, where 0% represented absence of damage and 100% complete death of the plant. It is concluded that the use of Cletodim 240 g/L (Select) and Haloxifope-p-Butyl 124,7 g/L (Verdict R), associated with vegetable oil 930 g/L in the dosage of 0,5% of the syrup, were the best treatments among those used in this research to control the Digitaria insularis L.