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Agricultural biotechnology: insect control benefits (National Center for Food and Agricultural Policy).
| Gianessi L., Carpenter, JE (1999).
| The insect pests, like the European corn borer, Colorado potato beetle, tobacco budworm, cotton or pink bollworm, that are cotrolled by genetically-engineered crops, have been long term problems for U.S. growers. Attempts to control these pests with biological methods have not proven successful despite many decades of research. The genetically-engineered plants are highly effective in reducing populations of these insects., Insecticides have usually not been used to control the European corn borer, therefore, in 1998 although 18% of the U.S. corn acreage was planted with Bt corn, a reduction in insecticide use occured on only 2.5% of the corn acreage, which means that 2 million fewer acre treatments were made. Eventhough, an additional 60 million bushels of corn were being produced as a result of planting Bt corn, the increased corn yield in 1998 was not enough to pay for the Bt corn technology premium and growers planting Bt corn lost $26 million because pest infestation levels and the price of corn dropped well below average., Bt cotton was planted on 17% of the U.S. cotton acreage, saving the cost of around 5 million acre treatments with insecticides and producing an extra 85 million pounds of cotton, because Bt cotton plants were more effective in controlling the target insects. Cotton farmers gained $92 million in net income as a result of planting Bt cotton in 1998.
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