Study on the occurrence and chemical tolerance of tomato leaf miner (Liriomyza sativa Blanchard) emerged in Yamaguchi prefecture
2007
Yamamoto, K.(Yamaguchi-ken. Agricultural Experiment Station (Japan)) | Ookubo, T. | Morishige, H. | Tonogouchi, H. | Honda, Y. | Izumi, K.
The present study aims (i) to find out the occurrence and parasitism of Tomato Leaf miner, (ii) to determine relationships between the seasonal variations in emergence and the degree of damage in tomato from summer to autumn, and (iii) to examine the chemical tolerance of Tomato Leaf miner to different chemical pesticides. Tomato Leaf miner was firstly identified at Atou city and Mutsumi village in 1999. The prevalence of the pest throughout the Yamaguchi prefecture occurred by 2002. In total 10 species parasitic plants in 4 familys were identified for the pest. Prevalence of the disease caused by Tomato Leaf miner starts from August and reaches in peak in autumn with sharp decline in winter. It is assumed that Tomato Leaf miners come to the infested area from another region in August. The degree of disease prevalence was measured through the counting of Tomato Leaf miner in a specific area by using yellow and sanagi trap. Therefore, pest control should be started from August for production of tomato in summer to autumn. The result indicated that Tomato Leaf miner had resistance of different degrees to different pesticides, so it is recommended to select most effective pesticides to control the pest.
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