Influence of Unharvested, Cull-pile, and Volunteer Onions on Populations of Onion Maggot (Diptera: Anthomyiidae)
- 1 June 1985
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Economic Entomology
- Vol. 78 (3) , 542-546
- https://doi.org/10.1093/jee/78.3.542
Abstract
Damaged bulbs left in the field following harvest were the major food source for overwintering populations of Delia antiqua (Meigen). Numbers of pupae overwintering in the field soil ranged from 0.06 million (boiler onions) to 0.67 million (bulb onions) per ha. Flies emerged from at least 95% of these pupae in the spring. Approximately 400 flies (about 0.1% of the total spring population) emerged from piles of onions culled from each ha of harvested crop. Unfavorable conditions within cull piles and the inability of larvae to establish on undamaged volunteer plants in the spring indicate that neither of these sites are important sources of D. antiqua infestations.This publication has 5 references indexed in Scilit:
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