Quantification of damage and evaluation of different insecticides against onion maggot, Delia antiqua (Meigen) (Diptera:Anthomyiidae) in Kargil district of Ladakh region Pandey Ajay Kumar1, Namgayal Dorjay2 1Regional Agriculture Research Sub Station, Sher-e-Kashmir University of Agricultural Sciences and Technology, Kargil, Ladakh, Jammu and Kashmir- 194 103, India. 2Regional Agriculture Research Station, Sher-e-Kashmir University of Agricultural Sciences and Technology, Leh, Ladakh, Jammu and Kashmir - 1941001, India. *E mail: drajay2002@gmail.com.
Abstract Survey was conducted during the year 2005–08 at Kargil district of Ladakh region to quantify the extent of damage of onion maggot, Delia antiqua (Meigen) (Diptera: Anthomyiidae) in onion and to find out effective insecticide for the management of onion maggot. The study revealed that the onion maggot caused 17.11 to 37.5% infestation in onion in different area of Kargil district with highest and lowest infestation in Shilikchey and Baro village, respectively. Similarly in a experiment, out of six insecticides namely Phorate, Dichlorvos, Phosphamidon, Endosulfan, Chlorpyriphos and Malathion, Phosphamidon was found to be most effective insecticide at both concentrations i.e. 0.05 and 0.07% by reducing 60.00 to 84.5% infestation over control. However, it was almost at par with Phorate which reduced 46.0 to 76.8% infestation, respectively. The Endosulfan, at both concentrations, was found to be least effective insecticide as compared to the rest of the test insecticide. Top Keywoards Onion, Delia antiqua, insecticide, infestation, Kargil, Ladakh. Top |