Evaluation of entomopathogenic fungus Verticillium lecanii (Zimmermann) Vieges and the predator Chrysoperla carnea (Stephens) against cowpea aphid, Aphis craccivora (Koch) on faba bean in EGYPT

Document Type : Original Article

Authors

Biological Control Research Dept., Plant Protection Research Institute, A.R.C., Dokki, Giza, Egypt

Abstract

Three tested treatments of the entomopathogenic fungus Verticillium lecanii (Zimmermann)
Vieges, the predator Chrysoperla carnea
(Stephens) and V. lecanii followed by release of C. carnea in faba bean field for controlling cowpea aphid, Aphis
craccivora (Koch) compared with control were conducted. The first treatment
wasV. lecanii repeated 4 times at
15-days intervals at the rate of 108 spores/ml. The second was C.
carnea at the same intervals at the rate of 12,000 predator [larvae
(L2)]/feddan/releases.The third was V. lecanii applied 2 times at
15-days intervals at the same rate followed
by release of C. carnea 2 times at 15-days intervals at the same
rate. Treatments were conducted during 2006-2007 and 2007-2008
at a location in Ismailia Governorate. These treatments
indicated the potential use of these treatments to control A.
craccivora on faba bean. Reduction in A.
craccivora population and subsequent yields were
significant between treatments. Highest reduction and yield gain was observed
when fungus V. lecanii was applied

Keywords

Egyptian Academic Journal of Biological Sciences. A, Entomology
Volume 1, Issue 2
December 2008
Pages 211-216

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