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Assessment of seed extract of pignut Jatropha Curcas for the control of beans weevil Callosobruchus Maculatus

 Department: Biological Science  
 By: usericon Expresshubpub  

 Project ID: 2270
   Rating:  (3.3) votes: 6
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   Price:₦3000
Abstract
A study was conducted on the assessment of seed extract of Jatropha curcas for the control of Callosobruchus maculates. J.curcas seed extract was obtained by using methanol. The plant extract was prepared into different concentrations Percentage weight per unit volume (%w/v) of 1w/v, 2w/v, 3w/v and were compared for their relative bioactivity against C. maculates adult and larva in the laboratory at temperature, 29OC and the parameters assessed were mortality,oviposition rate, adult emergence and seed damage of  C. maculates on the treated beans. The result showed that the mortality of C. maculates increased with exposure period and concentration of extracts and the rate of oviposition decreased seriously on the seventh day were 3% and 2%w/v had a percentage mortality of 76.6% and 66.6% and oviposition rate of 15.33% and 38.67% this shows that  increase in concentration reduces the activity of weevil . It could be concluded that the seed extract is effective against C.maculatus and this can be used to store beans instead of synthetic chemicals ...
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