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Journal of Plant Sciences
  Year: 2006 | Volume: 1 | Issue: 2 | Page No.: 126-131
DOI: 10.3923/jps.2006.126.131
 
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Bio-potential of Different Rates and Application Schedules of Xylopia aethiopica (Dunal) A. Rich Extracts for Control of Maruca Pod Borer and Spink Bug on Cowpea Plants

Oparaeke Alphonsus Mbonu

Abstract:
The efficacy of different rates (0, 5, 10 and 20% w/v) and spraying frequencies (0, 2, 4 and 6 weekly applications) of Aethiopian pepper, Xylopia aethiopica (Dunal) A. Rich extracts against Maruca vitrata Fab. and Clavigralla tomentosicollis Stal on cowpea plants was compared with a synthetic insecticide (cypermethrin+dimethoate) and untreated check in two years of field study under rain fed conditions in Zaria, northern Guinea savanna of Nigeria. The results showed that Maruca pod borer and spink bug were significantly reduced at higher extract rate (20% w/v) and more frequent sprayings (4 and 6 weekly applications) compared with the untreated check. Pod damage reduction, grain yield and quality were also significantly enhanced in extracts treated plots at similar level compared with the untreated check. The synthetic insecticide treatment check was however, superior to X. aethiopica extracts in all the parameters tested. The application of higher doses and more frequent sprayings of X. aethiopica extract could play an important role in pest management of cowpea farms managed by resource limited farmers in less developed countries.
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How to cite this article:

Oparaeke Alphonsus Mbonu , 2006. Bio-potential of Different Rates and Application Schedules of Xylopia aethiopica (Dunal) A. Rich Extracts for Control of Maruca Pod Borer and Spink Bug on Cowpea Plants. Journal of Plant Sciences, 1: 126-131.

DOI: 10.3923/jps.2006.126.131

URL: https://scialert.net/abstract/?doi=jps.2006.126.131

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