Bt Cry toxin expression profile in selected Pakistani cotton genotypes
Pakistan is ranked fourth among the top five cotton-producing countries in the world. About 70-80% of the cultivated area is under Bt cotton in Pakistan super(1). Bollworm (Helicoverpa armigerd) is the major pest of cotton super(2). It causes 31.73-36.45% yield losses super(3,4) and these are reduce...
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Veröffentlicht in: | Current science (Bangalore) 2012-06, Vol.102 (12), p.1632-1636 |
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Sprache: | eng |
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Zusammenfassung: | Pakistan is ranked fourth among the top five cotton-producing countries in the world. About 70-80% of the cultivated area is under Bt cotton in Pakistan super(1). Bollworm (Helicoverpa armigerd) is the major pest of cotton super(2). It causes 31.73-36.45% yield losses super(3,4) and these are reduced by heavy pesticide application. There has been a tremendous increase in the import and use of pesticides. Consequently, about 7.7 billion rupees is spent on pesticides every year super(5). Considering the total pesticide usage (94,265 metric tonnes in 2007-08), 70% is being used exclusively on cotton. In addition to being a pollutant, pesticides are also hazardous to the farmers and livestock super(1). The large amount of money being spent on these chemicals can be avoided by planting Bt cotton. |
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ISSN: | 0011-3891 |