Results
Title

Quality of pre-emergence herbicide application with adjuvant in sugarcane crop.

Authors

Muncio Compagnon, Ariel; Tufaile Cassia, Marcelo; da Costa Ferreira, Marcelo; de Freitas Noronha, Rafael Henrique; Ribeiro Guimarães, João Emmanuel

Abstract

Reduction of spraying rate can be an alternative to reduce costs in pesticide application. The aim of this study was to evaluate the distribution of fan and droplet size with different spraying rate and concentration of adjuvant on spraying liquid of herbicide to control Ipomoea spp. on sugarcane crop. The experiment was carried out at fully randomized plots, 3 x 4 + 1 factorial scheme. The factors were application volumes (80, 130 and 180 L ha-1) preemergence application of herbicide sulfentrazone, and concentrations of adjuvant (0; 0.5; 1.5 and 4.5%). The variables were: Angle of the jet spray (degrees), flow of nozzles (L min-1), coefficient of variation of fan distribution (CV), volume median diameter (VMD), coefficient of uniformity for static nozzles (SPAN), drift (percentage of volume in droplets smaller than 200 microns) and control of Ipomoea spp. (%), analyzed with statistical process control tool (CEP). The reduction of spraying volume did not change the control of Ipomoea spp. and have resulted in standardization of the droplet size when the concentration of adjuvant in spraying liquid was bigger than 1.5%.

Subjects

HERBICIDES; SUGARCANE; SULFENTRAZONE

Publication

Brazilian Journal of Applied Technology for Agricultural Science / Revista Brasileira de Tecnologia Aplicada nas Ciências Agrárias, 2013, Vol 6, Issue 1, p77

ISSN

1983-6325

Publication type

Academic Journal

DOI

10.5935/PAeT.V6.N1.09