Assesment of the efficiency of new insecticides on cucurbit fruit flies.
2008
Sheykhi Garjan, A`ziz | Mohajer, Mohammad Ebrahim | Rahimi, Hassan | Arjomand, A`li Reza | Mohammadi Pur, A`li | Javad Zadeh, Mehran
The cucurbit fruit flies Dacus ciliatus (DC) and Myopardalis pardalina (MP) are the most important pests of melons. Most of the farmers often use insecticides for controlling fruit flies. In present study, the efficiency of conventional and recommended insecticides was compared with spinosad and acetamipride against DC and MP. It was found that all of the insecticides used had an effectiveness of less than 80%. The mean efficiency of spinosad showed no significant difference compared with the conventional insecticides, such as deltamethrine. In contrast, acetamipride had the least effectiveness among the tested insecticides. Laboratory tests were conducted to assess the LC50 of dimethoat, deltamethrin, thriclorophon, malathion, spinosad and acetamipride on both male and female DC. The bioassay showed that dimethoat (LC50 =0.4ppm) was the most and acetamipride (LC50 =19.88ppm) the least toxicity respectively.
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