Volume de pulverização reduzido para controle de Leucoptera coffeella (Lepidoptera: Lyonetiidae) em plantas de café

The present work evaluated reducing on spray volume for the control of Leucoptera coffeella (Guérin-Mèneville & Perrottet, 1842; Lepidoptera: Lyonetiidae) in coffee. Were used a conventional sprayer to apply the volumes 400 and 200 L ha-1 and an ultra-low-volume (ULV) sprayer to apply 46, 67 and 92 L ha-1. Sprays utilized 800 mL.ha-1 of the insecticide profenofos+lufenuron. The tracer MnSO4 was mixed to the spraying liquids at 20 g L-1. Leaves were collected from different parts of the coffee tree to evaluate the volume of insecticide spraying liquid deposited. For the L. coffeella control, leaves were collected before and 7, 14, and 21 days after spraying (DAS) to evaluate the number of live and dead L. coffeella larvae. The variables data were subjected to variance analysis and the means compared by Tukey’s test (p