Deltamethrin to control the boll weevil

• Autor(a) principal: Bleicher, Ervino
• Data de Publicação: 2014
• Outros Autores: Jesus, Fernando M.M. de, Almeida, Túlio H.M.
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Pesquisa Agropecuária Brasileira (Online)
• Texto Completo: https://seer.sct.embrapa.br/index.php/pab/article/view/13364
• topic: chemical control; pyrethroids; controle químico; piretróides

The effect of the EC, FLOW and ULV formulation of deltamethrin and cypermethrin ED on the cotton boll weevil Anthonomus grandis Boheman, 1843 (Coleoptera: Curculionidae) at Campina Grande, PB, Brazil, was studied. The randomized complete block design with four replications and eight treatments as folows was used: Deltamethrin (Decis FLOW 50 SC) 10 and 12,5 g a.i./ha; (Decis ULV) 7,5; 10,0 and 12,5 g a.i./ha; (Decis EC) 12,5 g a.i./ha; Cypermethrin (Cymbush 30 ED white nozzle) 8,34 g a.i./ha and check. All the treatments were efficient to maintain the square infestation around the action level, which is 10% of infested squares, up to eight days after the third application. High weevil density may be reduced by three insecticide applications at a three-day interval.