Effect of Certain Ecological and Agro Techniques on the Incidence of Pink Bollworm, Pectinophora gossypiella (Lepidoptera: Gelechidae) and Spiny Bollworm, Earias Insulana, (Lepidoptera: Noctuidae); on Cotton Plants

Document Type : Original Article

Authors

1 Department of plant protection, Faculty of Agriculture (Saba-Bacha) Alexandria University

2 Plant Protection Res., Institute Agric. Res. Centre., Alex., Egypt

Abstract

The present study was conducted on cotton variety Giza 88 during two consecutive seasons of 2009 and 2010 to evaluate and determine the possible use of each of four fertilization types: bio-fertilizer (Microbin®), Organic, Mineral and bio-+ mineral ones; two foliar nutrients (Greenzit S.P100 & Potasin-F), a bio-pesticide “Radiant” and two plant traps of okra and/or maize in comparison to a standard insecticide – Chlorpyrifos, in an Integrated Pest Management (IPM) program for controlling the pink bollworm, Pectinophora gossypiella (Saunders) & spiny bollworm, Earias insulana (Boisd.).
The obtained results indicated that the bio-fertilized cotton plants were somewhat less infested with pink & spiny bollworm, in comparison to the organic, mineral and organic-bio fertilized ones. Spraying of both the foliar nutrients - Potasin- F + Greenzit SP100, the biopesticid- Radiant® and/or the conventional pesticide Chlorpyrifos on the surrounded cotton plants by okra and / or maize plants gave lower means values of pink & spiny bollworm infestation. Also, the encircled cotton plants by okra and / or maize plants without any spraying treatments gave lower significant means of infestation in both the successive seasons of study.