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Control Number40471
Date and Time of Latest Transaction20060619141808.4
General Information060619s1995 |||||||||b ||00|||
Cataloging SourcePCARRD-DOST
Main Entry - Personal NameDuatin, Cecil Joy Y.
Main Entry - Uniform TitleEnglish
Title StatementField evaluation of pheromone-plant resistance-Metarhizum combination for sweetpotato weevil control Erlinda A. Vasquez, Cecil Joy Y. Duatin
Physical Description55p
General Note-(PRCRTC Funded Proj. RSPR 92.012.06)
Summary, Etc.Five different sweetpotato weevil control treatments were evaluated for one and three cropping seasons in VISCA and in Dulag, Leyte, respectively. The treatments were: insecticide used as preplanting treatment of planting materials, Metarhizium anisopliae grown on corn kernels and applied as conidia/mycelia grown at the base of sweetpotato plant, pheromone trap installed one week after planting until harvest, combination of insecticide, pheromone trap and M. anisopliae, and the untreated check. Two sweetpotato varieties, VSP 2 (susceptible) and Red Wonder (moderately resistant) were used. Depending on the cropping season, weevil infestation on VSP 2 was 18-40% higher than Red Wonder. Higher weevil population counts and damage rating were also observed in VSP 2 than in Red Wonder. All of the five treatments exhibited significantly lower weevil infestation and higher yield than the untreated control. Preplanting treatment of sweetpotato slips with insecticides was as effective as using pheromone traps for weevil control. Both treatments were also more effective than M. anisopliae. However, combination of all treatments was the best with 43-48% reduction in weevil infestation and 60-70% increase in yield. On the other hand, the individual treatments got only 13-35% reduction in weevil and 19-42% increase in yield. Among the different treatments, the combination of insecticides, pheromone trap and M. anisopliae gave the highest return of investment, followed by combination of pheromone trap and M. anisopliae. The use of pheromone trap and insecticides gave more or less the same profit which was remarkably higher than using M. anisopliae alone. The untreated sweetpotato plants had a break even gross income with production cost. At times nonapplication of any weevil control measures resulted in some losses when severe weevil infestation occurred
Subject Added Entry - Topical TermSweet potatoes
 Pest control
 Biological control
 Pheromone traps
 Metarhizium anisopliae
Added Entry - Personal NameVasquez, Erlinda A.
LocationDOST PCARRD REPORTS PCARRD/SLS PCR-05-0028 1 Others 1996-02-05
Physical Location
Department of Science and Technology
Philippine Council for Agriculture, Forestry and Natural Resources Research and Development
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Not Available
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