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Dose Mortality Response in Field Population of European Red Mite, Panonychus ulmi to Various Pesticides

2014; Plant Protection Association of India; Volume: 42; Issue: 1 Linguagem: Inglês

0253-4355

Asma Sherwani, F. A. Zaki, Malik Mukhtar Ahmad,

Agricultural pest management studies

Dose mortality response in adults of European red mite (ERM) Panonychus ulmi (Koch) to various pesticides, viz., fenazaquin, dimethoate, endosulfan, chlorpyrifos and ethion were studied in the Division of Entomology, SKUAST-K, Shalimar during the year 2007 -08. The findings of the investigation revealed that P. ulmi at different locations in Kashmir valley responded differently to different pesticides used. For fenazaquin the highest LC50 value of 0.0033 per cent and resistance factor of 5.26 was recorded in ERM from Achabal and lowest LC50 value of 0.0010 per cent was recorded from Merihama and Rajpura, respectively. In case of dimethoate the highest LC50 value of 0.027 per cent and resistance factor of 10.68 was recorded from Rajpura and lowest LC50 value of 0.014 per cent was recorded from Madar. Similarly, for endosulfan the highest LC50 value of 0.058 per cent and resistance factor of 2.33 was recorded from Shalimar and lowest LC50 value of 0.027 per cent was recorded from Rajpura. However, in case of chlorpyrifos, the highest LC50 value of 0.022 per cent was recorded in Achabal with a resistance factor of 2.97 whereas the lowest LC50 value of 0.011 per cent was recorded in Rajpura. Similarly, for ethion the highest LC50 value of 0.037 per cent and resistance factor of 1.84 was recorded from Rajpura whereas the lowest LC50 value of 0.032 per cent was recorded from Merihama and Madar, respectively.