NDLI: Proceedmqs of the 7 th lnternatumal Workmg Conference on Stored-product Protection-Volume 1 Limiting the amount of pesticide applied to small bulks of maize in rural stores

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Proceedmqs of the 7 th lnternatumal Workmg Conference on Stored-product Protection-Volume 1 Limiting the amount of pesticide applied to small bulks of maize in rural stores

Content Provider	Semantic Scholar
Copyright Year	2010
Abstract	The simplest and most effective method for African farmers to protect maize against Prostephanus truncatus and Siiophiius spp 1Sto shell cobs and treat the resulting gram with a suitable msecticidal dust Such pesticide application IS a considerable expense for subsrstence farmers and may pose nsks to health and the environment Observed downward migration of msect pests m gram bulks suggested that msecticide application need not be umform but may still be effective If restncted to specific locations, thus reducmg the amount of pesticide used To test the potential of localised treatments, laboratory studies were undertaken to observe the behaviour of P truucaius m gram columns, with and without locahsed pesticide treatment, and field tnals were implemented m mud s110s in northern Ghana In a laboratory study with maize bulks 275cm deep, there was a strong downward movement m the gram, to depths of 275cm after three weeks, and over half the population penetrated below 75cm. In maize bulks 126cm deep, localised treatment of the bottom 30cm depth (20% of gram) together with a treatment of the top lOcm (about 9% of gram) gave adequate protection over a penod of fifteen weeks Gram preservauon m mud s110s was tested by treatment of the bottom 15cm (30% of gram) and top lOcm (20% of gram) To SImulate farmer consumption most of the untreated portion of gram, in between the two treated layers, was removed by regular withdrawals dunng a 24-week storage penod. Good grain preservation was achIeved. The results of these stud1es are d1scussed m relation to the adoption of reduced pestic1de usage for the protectlOn of small bulks of farm stored maize
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://spiru.cgahr.ksu.edu/proj/iwcspp/pdf2/7/956.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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