Atividade de diferentes adjuvantes de calda sobre a broca-do-café (Hypothenemus hampei).

Abstract

Coffee is a crop of great importance for Brazil, as it has an enormous capacity to generate jobs, in addition to being the driving force of socioeconomic development, production and distribution of wealth in several of its producing regions. In view of the above, this study aimed to evaluate the performance of the insecticides Voliam Targo and Klorpan 480 EC, associated with three spray adjuvants with different characteristics, in the control of the Coffee Borer (Hypothenemus hampei) in the coffee crop. The experiment was conducted during the 2020/2021 harvest, at Fazenda e Campo Experimental Izidoro Bronzi, located in Araguari – MG. The experiment followed an experimental design in randomized blocks, with nine treatments and four replications. The treatments used were: 1 – Control; 2 - Voliam Targo 1.0 L.ha-1; 3 - Voliam Targo 1.0 L.ha-1 + Fultec 0.05 L.ha-1; 4 - Voliam Targo 1 ,0 L.ha-1 + Wetcitrus 0.25 L.ha-1; 5 - Voliam Targo 1.0 L.ha-1 + Norus 0.15 L.ha-1; 6 - Klorpan 480 EC 1.5 L .ha-1; 7 - Klorpan 480 EC 1.5 L.ha-1 + Fultec 0.05 L.ha-1; 8 - Klorpan 480 EC 1.5 L.ha-1 + Wetcitrus 0.25 L.ha -1; 9 - Klorpan 480 EC 1.5 L.ha-1 + Norus 0.15 L.ha-1 . Each plot consisted of a crop line, spaced at 4.70 m with 10.50 m in length, totaling 38.85 m with nine treatments and four replications, totaling 36 plots. One application were carried out with a motorized backpack pump, Yamaho model PC260CL, equipped with two full cone nozzles (DDC02-Magnojet), working pressure 45 psi and spray volume 400 L/ha. The evaluations were carried out with a previous sampling, which was carried out before the insecticide application, a general sampling in the area to verify the level of infestation at the moment of the application. While the other evaluations were performed every ten and twenty days after the application. Under the conditions of the work exposed, the use of adjuvants added to insecticides did not provide an increase in borer control, and further studies must be carried out to prove the results.