Controle químico ao ácaro tetranychus urticae (Koch 1836) Bordeaux & Dosse 1963, em tomateiros

Abstract

SUMMARY An experiment to test chemical contrai oi the mite Tetranychus urticae (Koch 1836) Bordeaux & Desse 1963, was carried out tomato plants, at the college of Agronomy and Veterinary Medicine of the University oi Golas. The following insecticides were tested: - Diazinon E-60 (Thio­phosphate-0-0-diethyl-0-2-isopropyl-4-methyl-pirimidyl) at 0,06%; Foi i­do\ 60 (Thiophosphate-0-0-dimethyl-O-p-nitrophenil) at 0,06%; Kumu­lus (80% coloidal sulfur) at 0,03%; Metasystox-i. (Thiophosphate-0-0- dimethyl-0-3-methylmercapto-ethyl) at 0,025%; Lebaycid-50 (Thio­phosphaté-0-0-dimethyl-S-ethyl-mercaptoethyl) at 0,065% and granu­lated Disyston at 2,5% (Dithiophosphate-O-O-Oiethyl-S-2(Thioethyl) - ethyl· at 2,5 g/plant. Disyston, Metasystox-i, Lebaycid and Folidol-60, were statisti­cally superior to the others in controlling the mite. The highest percentage os contrai was reachead by Disyston. Next in arder carne Metasystox-i, Lebaycid-50. and Folidol-60. Diazi­non-E-60 and sulfur cannot be recommended for controlling Tetrany­chus urticae.