Selectivity of pesticides used in peach production to immature stages of Trichogramma atopovirilia Oatman & Platner, 1983 (Hymenoptera: Trichogrammatidae)

Ciência Rural

Castilhos, Rodolfo Vargas¹  Manzoni, Cristiane Gindri¹  Nörnberg, Sandro Daniel¹  Giolo, Fabrizio Pinheiro¹  Grützmacher, Anderson Dionei¹  Härter, Wagner da Roza¹ 

[1] Universidade Federal de Pelotas, Pelotas, Brasil

关键词: Insecta;    side-effects;    egg parasitoids;    Prunus persica L;   

DOI  :  10.1590/S0103-84782008000500003

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

The selectivity of the pesticides (g or mL commercial product 100L-1) abamectin (80), carbaryl (360), deltamethrin (40), dimethoate (120), ethofenprox (150), fenthion (100), fenitrothion (150), glufosinate ammonium (2L ha-1), mineral oil (2000), phosmet (200), sulphur (600) and trichlorphon (300) used in peach orchards was evaluated under laboratory conditions, expounded in different immature stages of the egg parasitoid Trichogramma atopovirilia Oatman & Platner, 1983. Bioassays were carried out by direct applied of treatments on eggs of Anagasta kuehniella (Zeller, 1879) with the immature stages egg-larva, pre-pupa and pupa of T. atopovirilia. The percentage of emergence adult parasitoids was assessed. Reduction in the emergence adult compared with the control was measure and the pesticides were classified according to IOBC/WPRS. Abamectin, deltamethrin, dimethoate, ethofenprox, glufosinate ammonium, mineral oil, phosmet and sulphur were not affected and were harmless (<30%). The insecticides carbaryl, fenitrothion and trichlorphon affected the emergence adult in all developmental stages and were slightly harmful (30-79%) or moderately harmful (80-99%) according developmental stage. Fenthion affected to pre-pupa and pupa stages and was slightly harmful (30-79%). The association between biological and chemical control, in peach orchards, is possible for the pesticides harmless and immature stages of T. atopovirilia.

【 授权许可】

CC BY-NC