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Bibliographic Data
Control Number58152
Date and Time of Latest Transaction20060619142829.8
General Information060619s |||||||||b ||00|||
Cataloging SourcePCARRD-DOST
Main Entry - Personal NameCalilung, Venus J.
Main Entry - Uniform TitleENGLISH
Title StatementComposition and trend of Thrips palmi Karny and its natural enemies
General NoteCollege, Laguna: University of the Philippines Los Banos, 1988. var. p. -(UPLB-PCARRD-ASSP Proj. No
Summary, Etc.The population and trend of Thrips palmi Karny and its natural enemies were determined on watermelon var. Sugar Baby for three cropping seasons at the University of the Philippines at Los Banos Experimental Station from 1986 to 1988. T. palmi consisted of more adults than immature stages throughout the study. The highest egg count was at 60 days after planting (DAP) and the lowest at 80 DAP. The trend of population build-up of T. palmi followed a similar pattern: initial infestation of the crop was at 15 to 16 DAP, population increased at 20 to 24 DAP, density peak at 40 to 60 DAP and population recession as early as 64 DAP to as late as 80 DAP. The predators' population was generally low compared to T. palmi. However, their population trends followed the same pattern with T. palmi. The natural enemies identified consisted of four bugs namely: Orius tantillus Matsch, Campyloma sp., Cyrtopeltis tenuis, Geocomis sp. near lividipennis; one ant (Tapinoma philippinensis); and six spiders. T. palmi infested several plants both of economic and noneconomic values. Of these plants, Amaranthus spinosus harbored T. palmi and its predator, O.tantillus, throughout the year
Subject Added Entry - Topical TermCITRULLUS LANATUS
 PEST INSECTS
 NATURAL ENEMIES
 BIOLOGICAL CONTROL ORGANISMS
Added Entry - Personal NameQuimio, Gorgonio M.
LocationDOST PCARRD
  
     
 
Physical Location
Department of Science and Technology
Philippine Council for Agriculture, Forestry and Natural Resources Research and Development
  
     
 
Digital Copy
Not Available
  
     
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