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- Title
Studies on efficacy of certain neem products against Spodoptera litura (Fab.).
- Authors
Razak, T. Abdul; Santhakumar, T.; Mageswari, K.; Santhi, S.
- Abstract
A laboratory study was conducted to test the efficacy of certain neem products viz., neem oil (NO), neem seed kernel extract (NSKE), neem cake extract (NCE), neem leaf extract (NLE) and one commercial product Vijaya neem against third instar larva of tobacco caterpillar Spodoptera litura. The food indices Consumption Index (CI), Efficiency of Conversion of Ingested Food (ECI) and Growth Rate (GR) were derived. NSKE five per cent recorded the lowest CI of 0.428 and GR of 0.130. NO three per cent showed the lowest ECI of 26.04. Vijayaneem exhibited the highest antifeedant index (64.75) followed by NSKE five per cent (48.7). Among the neem products tested, NSKE five percent showed the highest larval mortality of 40 per cent. Insect growth regulatory (IGR) effect was recorded both in the NSKE five per cent and NO three per cent treated insects and it was more pronounced in NSKE.
- Subjects
NEEM products; SPODOPTERA littoralis; TOBACCO-caterpillar
- Publication
Journal of Biopesticides, 2014, Vol 7, p160
- ISSN
0974-391X
- Publication type
Article