LABORATORY EVALUATION OF NEEM AGAINST THE FIFTH NYMPHAL INSTAR OF Schistocerca gregaria (FORSKAL)

Mohamad, E.; Abdel - Fattah, Th.; Sobhy, H.; Azer, W.

doi:10.21608/jppp.2014.87960

	LABORATORY EVALUATION OF NEEM AGAINST THE FIFTH NYMPHAL INSTAR OF Schistocerca gregaria (FORSKAL)
Journal of Plant Protection and Pathology
Article 16, Volume 5, Issue 4, April 2014, Page 547-555 PDF (450.82 K)
Document Type: Original Article
DOI: 10.21608/jppp.2014.87960
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Authors
E. Mohamad¹; Th. Abdel - Fattah¹; H. Sobhy²; W. Azer²
¹Locust and Grasshoppers Department, Plant Protection Research Institute, Agric. Res. Center
²Natural Resources Department, Institute of African Research and Studies, Cairo University
Abstract
Laboratory studied were carried out in an attempt to disclose the effect of antifeedant (Neem) at different concentrations on one day old of the 5^th nymphal instar of the desert locust, Schistocerca gregaria (Forskal) by feeding technique. Results showed that Neem caused 42% mortality after 12 days from treatment of LC₅₀ values. Neem decreased the THC after 2 and 4 days while significant decreased after 6 days compared to control. The free amino acids were non significant between Neem and control after 2 days while significant decreased after 4 and 6 days from treatment. The trehalase was non significant between Neem and control after 2 days while increased after 4 and 6 days from treatment.
Keywords
Schistocerca gregaria; Azaderachtin; Total haemocyte count; Free amino acids; Trehalase


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