M. M. Rahman
Department of Entomology, Bangladesh Agricultural University, Mymensingh, Bangladesh
B. N. Islam
Department of Entomology, Bangladesh Agricultural University, Mymensingh, Bangladesh
M. N. Bari
Entomology Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh
ABSTRACT
Methanolic and acetone extracts of seeds of Pithraj, Amoora ruhituka ( Wright & Arn.) were tested on rice hispa, Dicladispa armigera (OLV.) to know the effects of the extract in relation to the feeding behaviour, ovipositional behaviour and adult emergence of rice hispa. The food consumption on treated seedlings was very poor. The deterrent action of PSE and BSE were high and egg deposition ranges 0-13 in 48 hours and 0-8 in 72 hours of exposure to treated rice seedlings. In controls, egg deposition ranged from 0-28 in 48 hours and 0-18 in 72 hours respectively. Low emergence of rice hispa in all treated rice seedlings indicated the high degree of inhibition effect of the extracts on adult emergence. The adult emergence in control (MeOH and Water) were significantly higher than those on treated seedlings.
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How to cite this article
M. M. Rahman, B. N. Islam and M. N. Bari, 2002. Effects of Plant Extracts on the Development of Rice Hispa, Dicladispa armigera (Oliver). Journal of Biological Sciences, 2: 5-7.
DOI: 10.3923/jbs.2002.5.7
URL: https://scialert.net/abstract/?doi=jbs.2002.5.7
DOI: 10.3923/jbs.2002.5.7
URL: https://scialert.net/abstract/?doi=jbs.2002.5.7
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