Efficacy of onion seed treatment with some insecticides and two local isolates of Beauveria bassiana (Bals.) Vuill on onion maggot, Delia alliaria Fonseca in Nursery

	Efficacy of onion seed treatment with some insecticides and two local isolates of Beauveria bassiana (Bals.) Vuill on onion maggot, Delia alliaria Fonseca in Nursery
journal of kerbala university
Article 1, Volume 7, Issue 3, 2011, Pages 901-905 PDF (0 K)
Abstract
This study was conducted at the field of the College of Agriculture / University of Baghdad Abu – Ghraib to evaluate the efficiency of the treatment of onion seeds before planting in the nursery with bio-pesticide Spinosad and two local isolates from Beauveria bassiana (BSA3 and BSA1) compared with IGR’ Trigard and Insecticide Cruiser. Results of Seed treatment revealed that Spinosad significantly reduced infestation rate by the onion maggot, D. alliaria to lowest rate of 4.06 %, followed by 5.06 %, 6.64 % and15.73 % for Cruiser, Trigard and control treatment respectively. This means that seed treatment with Spinosad have been reduced incidence of infestation by approximately 75 %. As for the seed treatment with B. bassiana, Isolate BSA3 significantly reduced the infestation rate by the means of 11% followed 13.4 % for BSA1 isolate compared with 17.95% for the control treatment, this means that the seed treatment with these two isolates had reduced infestation rates by 38 % and 24 %for the isolate BSA3 and BSA1 respectively. The role of onion seed treatment with Spinosad and B. bassiana isolate especially in organic agriculture, also discussed.

Statistics Article View: 173 PDF Download: 84