Failure of imidacloprid and thiacloprid to control the guava-psyllid, Triozoida limbata (Enderlein) (Hemiptera: psyllidae)

Ciência e Agrotecnologia

José Oscar Gomes De Lima²  Geraldo Do Amaral Gravina¹ 

[1] ,Universidade Estadual do Norte Fluminense Darcy Ribeiro Laboratório de Entomologia e Fitopatologia Centro de Ciências e Tecnologias AgropecuáriasCampos dos Goytacazes RJ

关键词: Guava;    nicotinoid insecticides;    stem application;    foliage spraying;    Goiaba;    inseticidas nicotinóides;    aplicação via tronco;    pulverização da folhagem;   

DOI  :  10.1590/S1413-70542009000700032

来源: SciELO

【 摘 要 】

The guava-psyllid, Triozoida limbata (Enderlein), is a severe pest of guava orchards, reducing fruit production. This communication shows the results of an experiment aimed to test nicotinoid insecticides for controlling the guava-psyllid at a high-density level of infestation. Unsatisfactory control of this pest was achieved with imidacloprid AL 100 g/L, at 5, 10 or 20 mL sprayed once onto the guava stem; with imidacloprid SC 200 g/L, at 0.6 mL in 2 L of water/tree and with thiacloprid SC 480 g/L, at 0.2 mL in 2 L of water/tree, both sprayed twice (15 day interval) on the guava foliage. Possible causes of the failure are discussed in relation to several factors, since previous research showed satisfactory control of the guava-psyllid with these insecticides.

【 授权许可】

CC BY   
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