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Journal of Entomology
  Year: 2012 | Volume: 9 | Issue: 6 | Page No.: 375-381
DOI: 10.3923/je.2012.375.381
 
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Efficacy of Some Foliar Fertilizers and Alternative Chemicals on the Spiny Bollworm, Earias insulana (Boisd.) Larvae (Lepidoptera: Noctuidae) and their Side Effect on Protease Activity

A.Z. EI-Naggar and M.E. Tawfeek

Abstract:
The present study was carried out on cotton variety Giza 70 during two consecutive seasons of 2009 and 2010 in an Experimental Farm at Alexandria, Egypt. The study was conducted to evaluate two foliar nutrients, a plant growth promoter (ascobin) and two alternative chemical compounds compared with a standard insecticide (chlorpyrifos) against the spiny bollworm, Earias insulana (Boisd.) and to determine the possible incorporation of such compounds within a program of Integrated Pest Management (IPM) of the spiny bollworm. The effect of the tested compounds on larval Protease activity and on cotton yield was also investigated. The obtained results indicated that the highest efficacy was gained from the following foliar treatments Easterna Aminofert Plus® (EAP)/Greenzit S.P100/Chlorpyrifos, EAP/Radiant®/Methoxyfenozide® and Radiant®/ Methoxyfenozide®/Chlorpyrifos since they decreased the incidence of E. insulana infestation during the cotton season of 2009. The foliar treatments of Radiant®/Methoxyfenozide®/Chlorpyrifos and EAP/Radiant®/Methoxyfenozide® were also high efficient in reducing the level of the spiny bollworm infestation in the season of 2010. The application of EAP followed by Radiant® and Methoxyfenozide® in respect increased the cotton yield compared to the untreated control in both seasons of 2009 and 2010. The foliar treatments applied as a sequence of EAP/Greenzit® S.P100/Radiant® and the sequence of Radiant®/Methoxyfenozide®/Chlorpyrifos increased cotton yield in seasons of 2009 and 2010, respectively. The consequent treatments of EAP/Radiant®/ Methoxyfenozide® gave the highest Protease enzyme activity of Earias insulana larvae while that of Radiant®/Methoxyfenozide®/Chlorpyrifos showed the lowest activity.
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How to cite this article:

A.Z. EI-Naggar and M.E. Tawfeek, 2012. Efficacy of Some Foliar Fertilizers and Alternative Chemicals on the Spiny Bollworm, Earias insulana (Boisd.) Larvae (Lepidoptera: Noctuidae) and their Side Effect on Protease Activity. Journal of Entomology, 9: 375-381.

DOI: 10.3923/je.2012.375.381

URL: https://scialert.net/abstract/?doi=je.2012.375.381

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