Desempenho do bico hidráulico boomjet 5880-3/4-2toc20 em aplicações de herbicida sobre Urochloa decumbens (Stapf) R. Webster

Resumo

The experiment was carried out in the cerrado region of Goiânia, Goiás State, Brazil. The objective was to study the uniformity of drop deposition from spraying of the hydraulic Boomjet 5880-3/4-2TOC2095 nozzle in operation bands of 10 m, 12 m, and 14 m, and applied at 1.0 m, 1.3 m, and 1.5 m above plant tops. For treatment evaluation the variables drop density (droplets.cm-2) and control of Urochloa decumbens (Stapf) R. Webster plants were measured. The mathematical simulation of the overlapping bands application in both directions, unidirectional and bidirectional, showed low sprayed drop deposition uniformity, statistically represented by variation coefficients ranging from 61.46 % to 98.91%. Low values for drop density were obtained at specific points of the application band. Glyphosate applications at the three-studied nozzle application heights showed satisfactory control with operations bands of 10 m and 12 m.

Descrição

Palavras-chave

Plantas daninhas, Plantio direto, Pastagem, Weeds, Agrochemical, No-tillage, Pasture

Citação

BARCELLOS, Luiz Carlos; ALMEIDA, Rogério de Araújo; LEÃO, Paulo Garcez Ferreira; VELOSO, Valquíria da Rocha Santos; CZEPAK, Cecília; FERNANDES, Paulo Marçal. Desempenho do bico hidráulico boomjet 5880-3/4-2toc20 em aplicações de herbicida sobre Urochloa decumbens (Stapf) R. Webster. Pesquisa Agropecuária Tropical, Goiânia, v. 35, n. 3, p. 199-205, set./dez. 2005. Disponível em: <https://www.revistas.ufg.br/pat/article/view/2223/2179>.