Subscribe Now Subscribe Today
Science Alert
 
FOLLOW US:     Facebook     Twitter
Blue
   
Curve Top
Journal of Plant Sciences
  Year: 2006 | Volume: 1 | Issue: 2 | Page No.: 119-125
DOI: 10.3923/jps.2006.119.125
 
Facebook Twitter Digg Reddit Linkedin StumbleUpon E-mail
Pesticidal Activity of Three Rates and Spraying Frequencies of Extracts of Xylopia aethiopica (Dunal) A. Rich for Reducing Thrips Infestation on Cowpea Flowers
Oparaeke and Alphonsus Mbonu

Abstract:
Extracts of Xylopia aethiopica (Dunal) A. Richard were assayed at different dosages (0, 5, 10 and 20% w/v) and weekly application schedules (0, 2, 4 and 6) to control flower thrips, Megalurothrips sjostedti Trybom on cowpea flowers. The extracts were compared with a synthetic insecticide check in two years of field study under rain-fed conditions. The results indicated that thrips population on cowpea flowers was significantly reduced (p<0.05) while pod density was also enhanced (p<0.05) on plots treated at 20% extract rate with 6 or 4 weekly application intervals. The values in the two parameters tested were inferior to the synthetic insecticide check but superior to the untreated check in both periods. X. aethiopica contains Annonaceine, which acts in similar way as morphine and this sedative mode of activity could play an important role in the quest to control pests on crops using this plant extract either singly or in mixtures with other potential insecticidal plants. The pods are readily available, easily bio-degradable, low cost and environmentally friendly while the technology for processing and application of the extract is simple for use by limited resource farmers in third world countries.
PDF Fulltext XML References Citation Report Citation
How to cite this article:

Oparaeke and Alphonsus Mbonu , 2006. Pesticidal Activity of Three Rates and Spraying Frequencies of Extracts of Xylopia aethiopica (Dunal) A. Rich for Reducing Thrips Infestation on Cowpea Flowers. Journal of Plant Sciences, 1: 119-125.

DOI: 10.3923/jps.2006.119.125

URL: https://scialert.net/abstract/?doi=jps.2006.119.125

 
COMMENT ON THIS PAPER
 
 
 

 

 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 
 

       

       

Curve Bottom