ACTIVITY OF CASTOR OIL SEEDS Ricinus communis ETHANOL EXTRACT AGAINST COTTON LEAFWORM Spodoptera littoralis (BOISD.)

Dahi, H. F.; Gamil, Walaa E.; Yones, Mona S. A.

doi:10.21608/jppp.2015.75796

	ACTIVITY OF CASTOR OIL SEEDS Ricinus communis ETHANOL EXTRACT AGAINST COTTON LEAFWORM Spodoptera littoralis (BOISD.)
Journal of Plant Protection and Pathology
Article 9, Volume 6, Issue 12, December 2015, Page 1711-1725 PDF (285.28 K)
Document Type: Original Article
DOI: 10.21608/jppp.2015.75796
View on SCiNiTO
Authors
H. F. Dahi¹; Walaa E. Gamil¹; Mona S. A. Yones²
¹Plant Protection Research Institute, Dokki, Giza, Egypt
²National Authority for Remote Sensing and Space Sciences (NARSS), Cairo, Egypt.
Abstract
The present work aimed to study the effect of ethanol extract of Ricinus commnuis L. seeds on biological and physiological aspects for the cotton leafworm Spodoptera littoralis, 2^nd and 4^th instar larvae. The results cleared that the larval duration was 17.08 and 15.58 days & 10.11 and 9.36 days for treated and the untreated 2^nd & 4^th instar larvae respectively. The pupation percentage was 60.0 and 96.0 % for treated and untreated 2^nd instar larvae and 61.0 and 93.0 for treated and untreated 4^th instar larvae. The pupal weight was affected by the botanical extract. The pupal duration was 11.40 and 11.71 days for treated and untreated 2^nd instar larvae and it was 11.96 and 12.51 days for treated and untreated 4^th instar larvae. The emergence percentages resulted from treated 2^nd and 4^th instar larvae were 82.0 and 85.2 % compared with 97.0 % and 92.0 % for that resulted from the untreated larvae, respectively. On the other hand, the malformed adult was 28.0 and 2.0 % for 2^nd instar larvae (treated and untreated) and 16.0 and 5.0 % for 4^th instar larvae (treated and untreated) respectively. There are decreasing in fecundity of S. littoralis adults resulted from the treated 2^nd and 4^th instar larvae by the botanical extract used for this study. Effect of LC₅₀value of the tested plant extract on the biochemical aspects of the 4^th larval instar of S. littoralis was detected. The biochemical aspects AST, ALT, alkaline and acid phosphatase activities, the as well as the total protein content post treatment of the 4^th instar larvae were considered throughout the present study.
Keywords
Botanical extract-Castor oil seeds; Cotton leafworm; Spodoptera littoralis


Statistics Article View: 124 PDF Download: 319