THE IMPACT OF DIPEL 2X NUCLEAR POLYHEDROSIS VIRUS (NPV) AND INSECTICIDES ON COTTON NATURAL ENEMIES AT ISMAILIA GOVERNORATE

Document Type : Original Article

Authors

Plant Protection Research Institute, Agricultural Research Center.

Abstract

The present field study was carried out at lsmailia Governorate during
the two successive cotton growing seasons of 2003 8: 2004. Weekly samples
of the predatory fauna were collected from four selected fields at lsmailia
Governorate cotton fields treated by Dipel 2x and Nuclear Polyhedrosis Virus
(NPV) throughout and compared with the corresponding fauna collected from
insecticide treated cotton fields .
Samples were undertaken from cotton fields before treated of either Bio
and insecticides. Data revealed that the reliable occurrence of Dipel 2x and
Nuclear Polyhedrosis Virus (NPV). Six predators species were recorded.
These were Scymnus spp. order coleoptera. Coccinella undicimpunctata.
(Family : Coccinellide), Paederus alferii. (Family : Starphyvnidae). one from
order Hemiptora Orius spp., (Family : Anthocooidae) one from order
Neuorptera Chrysopa carnea (Family : Chrysopidae) and one from order
Daiptera Syrphus spp (Family : Syrphidae ). in cotton fields during the two
tested seasons .The obtained results confirmed that predator densities were
2.75 times and accordingly more numerous in the Dipel 2x and Nuclear
Polyhedrosis Virus (NPV) treated fields than the corresponding cotton fields
treated with recommended insecticides.
Journal of Plant Protection and Pathology
Volume 31, Issue 5
May 2006
Pages 3187-3192

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