Management of American serpentine leaf miner, Liriomyza trifolii using entomopathogenic nematodes
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Keywords:Liriomyza trifolii, entomopathogenic nematodes, pest management
Pot culture and field evaluations were carried out at the Department of Agricultural Entomology, College ofÂ Horticulture, Kerala Agricultural University, Vellanikkara during 2011-2013 to assess the efficacy ofÂ entomopathogenic nematodes (EPNs) against leaf miner, Liriomyza trifolii (Burgess). Pot culture study wasÂ conducted to compare the potential of soil isolated EPNs, Steinernema carpocapsae Isolate-1, 2, 3 and 4 withÂ other treatments, viz., Azadiractin1 EC at 0.005%, Beauveria bassiana at 1Ã—107 spores/ ml. Azadirachtin 1 ECÂ at 0.005% was observed as the most effective and caused 84.51 per cent mortality to the maggots of L. trifolii.Â This was followed by the foliar application of Heterorhabditis indica at 32 infective juveniles (IJs)/ maggot,Â which caused 18.98 per cent mortality. Application of B. bassiana was not found to be effective. In the fieldÂ evaluation, fipronil 5 SC at 0.002% was found to be the best treatment for the management of L. trifoliiÂ followed by azadirachtin 1 EC at 0.005%.
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