𝔖 Bobbio Scriptorium
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Systemic Action of an Insect Feeding Deterrent

✍ Scribed by GILL, J. S.; LEWIS, C. T.


Book ID
109678663
Publisher
Nature Publishing Group
Year
1971
Tongue
English
Weight
237 KB
Volume
232
Category
Article
ISSN
0028-0836

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✍ A. K. Tripathi; D. C. Jain; S. C. Singh πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 English βš– 36 KB

An improved extraction procedure resulted into a six-fold yield of bioactive fraction than the usual extraction method with a high per cent of feeding deterrence against 3rd instar larvae of Spilarctia obliqua and Spodoptera litura. The effective concentration (EC 50 ) of PH-2 was 4321 and 4155 ppm