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Bt cotton has brought in several advantages – experts
17
Mar '10
The Ministry of Agriculture for the first time approved commercial growth of transgenic insect-resistant cotton in 1997, after the assessment by the Agricultural Safety Committee for genetically modified organisms.

Since then, Chinese scientists have been continuously tracking and monitoring the impact on ecological and natural environment of large-scale cultivation of Bt cotton planted in different areas for more than 13 years and have accumulated a large number of first-hand information and obtained several clear conclusions.

According to the findings, transgenic insect-resistant cotton effectively controls nationwide damage of bollworm and pink bollworm. Bollworm and pink bollworm are major pests impacting cotton production in China, due to which, farmers need to sprinkle large quantity of pesticides to control the.

This leads to a large consumption of pesticides in turn increasing farmer's costs, reduced earnings and environmental pollution. After planting genetically modified cotton varieties, there has been a vast reduction in use of pesticides up to nearly 70 percent; meanwhile, the bollworms on soybean / corn / peanut have also significantly reduced.

Transgenic insect-resistant cotton provides good environmental conditions for growth of beneficial insects and enriches agricultural biological diversity, leading to an increase by several hundred times of beneficial insects, such as ladybug / Chrysopa / spiders and parasitic wasps and which is conducive to environment protection of agricultural land.

Transgenic insect-resistant cotton has pushed the development of supporting techniques of integrated pest management. As main insect pests are effectively controlled and the use of pesticide significantly reduced, secondary pest population has also changed, the number of aphids has reduced, and blind stinkbug has increased. Rational use of low-toxicity pesticides can ensure cotton harvest.

Fibre2fashion News Desk - China

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