AVALIAÇÃO DE PRODUTOS NO CONTROLE DE TRIPES NA CULTURA DA CEBOLA

Resumo

Avaliou-se a eficiência dos seguintes produtos químicos no controle de Thrips tabaci, em cebola cv. Texas Grano 502 PRR: 1) Tiametoxam (240 g i.a. ha-1) no transplante, Profenofós (400 g i.a. ha-1) aos 10, 40 e 50 dias após o transplante (DAT) e Cipermetrina+Profenofós (32+320 g i.a. ha-1) aos 20, 30, 60 e 70 DAT; 2) Tiametoxam (240 g i.a. ha-1) no transplante e (40 g i.a. ha-1) aos 20, 30, 60 e 70 DAT, Profenofós (400 g i.a. ha-1) aos 10, 40 e 50 DAT; 3) Tiametoxam no transplante (240 g i.a.ha-1) e (40 g i.a. ha-1) aos 30 e 60 DAT, Profenofós (400 g i.a. ha-1) aos 10, 40 e 70 DAT e Cipermetrina+Profenofós (32+320 g i.a. ha-1) aos 20 e 50 DAT; 4) Acefato (600 g i.a. ha-1) e Fempropatrina (72 g i.a. ha-1) alternados; 5) Lambda-cialotrina (20 g i.a. ha-1) e Profenofós (400 g i.a. ha-1) alternados; 6) Deltametrina (10 g i.a. ha-1); 7) Deltametrina + Triazofós (420 g i.a. ha-1); 8) Acefato (600 g i.a. ha-1); 9) Metiocarbe (600 g i.a. ha-1); 10) Acetamiprido (80 g i.a. ha-1); 11) Formetanato+açúcar (465,6 g i.a. ha-1+1%) e 12) testemunha. Efetuou-se a amostragem de ninfas + adultos aos 40, 60 e 70 DAT coletando-se cinco plantas, ao acaso, por parcela. Os tratamentos Formetanato+açúcar (96%) e Metiocarbe (81%) foram os mais eficientes.

EVALUTION OF PRODUCTS IN THE CONTROL OF THRIPS ON THE ONION CROP

Abstract

The efficiency of the following chemical products were evaluated in the control of Thrips tabaci in onion, c.v. Texas Grano 502 PRR: 1) Thiamethoxan (240 g a.i. ha-1) in the transplanting day, Profenophos (400 g a.i. ha-1) to the 10, 40 and 50 days after the transplanting (ATD) and Cypermethrin+ Profenophos (32+320 g a.i. ha-1) to the 20, 30, 60 and 70 ATD; 2) Thiamethoxan (240 g.a.i. ha-1) in the transplanting day and (40 g a.i. ha-1) to the 20, 30, 60 and 70 ATD, Profenophos (400 g a.i. ha-1) to the 10, 40 and 50 ATD; 3) Thiamethoxan (240 g a.i. ha-1) in the transplanting day and (40 g a.i. ha-1) to the 30 and 60 ATD, Profenophos (400 g a.i. ha-1) to the 10, 40 and 70 ATD and Cypermethrin+ Profenophos (32+320 g a.i. ha-1) to the 20 and 50 ATD; 4) Acephate (600 g a.i. ha-1) and Fenpropathrin (72 g a.i. ha-1) alternate; 5) Lambdacyhalothrin (20 g a.i. ha-1) and Profenophos (400 g a.i. ha-1) alternated; 6) Deltamethrin (10 g a.i. ha-1); 7) Deltamethrin+ Triazophos (420 g a.i. ha-1); 8) Acephate (600 g a.i. ha-1); 9) Methyocarb (600 g a.i. ha-1); 10) Acetamiprid (80 g a.i. ha-1); 11) Formetanate+sugar (465.6 g a.i. ha-1+1%) and 12) control, without insecticide. Sampling of nymphs + adults were made at 40, 60 and 70 ATD, being collected five plants per plot. The best treatments were formetanate+sugar (96%) and methyocarb (81%).