Susceptibility of Grapholita molesta to insecticides in Brazil

被引:4
作者
Batista Neto e Silva, Oscar Arnaldo [1 ]
Botton, Marcos [2 ]
Bernardi, Daniel [3 ]
Arioli, Cristiano Joao [4 ]
Omoto, Celso [5 ]
机构
[1] Dow AgroSci LTDA, Ribeirao Preto, SP, Brazil
[2] Empresa Brasileira Pesquisa Agr Embrapa Uva & Vin, Bento Goncalves, RS, Brazil
[3] Univ Fed Pelotas UFPEL, BR-96010970 Pelotas, RS, Brazil
[4] Empresa Pesquisa Agr & Extensao Rural Santa Catar, Videira, SC, Brazil
[5] Univ Sao Paulo, ESALQ, Piracicaba, SP, Brazil
来源
CIENCIA RURAL | 2018年 / 48卷 / 01期
关键词
chemical control; insect resistance management; oriental fruit moth; FRUIT MOTH LEPIDOPTERA; TORTRICIDAE POPULATIONS; RESISTANCE; APPLE;
D O I
10.1590/0103-8478cr20170253
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
The use of insecticides has been the main tool for Grapholita molesta (Busck) control in Brazil, which is considered one of the most important pests in apple and peach orchards. In order to implement an Insect Resistance Management (IRM) program, studies were conducted to characterize the baseline susceptibility of G. molesta to major insecticides for its control. Then, we conducted an insecticide susceptibility monitoring in thirteen field-collected populations of the pest. Neonates (0-24h old) were exposed to insecticides applied on surface of artificial diet. A high susceptibility was verified when neonates of the Laboratory population of G. molesta were exposed to insecticides with LC50 values (mu g a.i./cm(2)) of 0.1 (spinetoram), 1.0 (metaflumizone), 1.2 (chlorantraniliprole), 4.8 (novaluron), 5.1 (tebufenozide), 11.3 (phosmet) and 222.5 (pyriproxyfen). Based on the LC99 (mu g a.i./cm(2)), the diagnostic concentrations of 0.6 (spinetoram), 5.5 (metaflumizone), 5.6 (chlorantraniliprole), 19.6 (tebufenozide), 37.4 (phosmet), 37.8 (novaluron) and 2011 pyriproxyfen) caused high mortality (>95%) of neonates from field populations. These diagnostic concentrations will be used in resistance monitoring programs of G. molesta in Brazil.
引用
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页数:6
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