EFFICACY OF SOME INTEGRATED ELEMENTS FOR CONTROL       OF ONION MAGGOT

H. Al-Karboli, Hameed

	EFFICACY OF SOME INTEGRATED ELEMENTS FOR CONTROL OF ONION MAGGOT
The Iraqi Journal of Agricultural Science
Article 1, Volume 43, Issue 0, 2013, Pages 98-106
Author
Hameed H. Al-Karboli
Abstract
Onion maggot, Delia alliria Fonseca is considered to be a new species recently recorded in Iraq on onion, and there are no studies about it in Iraq. Experiments was carried out in the field of the College of Agriculture, Abu-Ghraib to evaluate the integration of the bio-pesticide (spinosad) and 3 types of sticky traps in addition to Tephri traps supplied with food lure. Results showed a significant reduction in the infestation rate by the maggot when any type of these traps were used after spraying onion plants with spinosad compared with spinosad spray alone, or the control treatment. Results also indicated the superiority of treatments of spinosad with Tephri traps and spinosad plus white sticky traps which significantly reduced the infestation rate after 5 week from treatment to 11.11% and 13.33% respectively, while it was ranged from (17.78 – 25.22 )% for the other treatment compared with 37% in the control treatment. A significant reduction in the onion maggot infestation by 70 % and 60%, and increased in plant yield by 31% and 29% for the treatments of Spionsad with Tephri traps or white sticky traps respectively. However, all treatments significantly increased the percentage of the first class bulbs (Grade 1) ranged from 82.20% for Spionsad with Tephri traps to 69.60% for the treatment of Spionsad alone. The role of the integration of the bio-pesticide (Spionsad) with traps tested in the integrated control for the onion maggot, was also discussed.

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