Weeds compete for moisture, nutrients, and light.
In addition, weeds make harvesting and grain storage difficult and grain quality low. Weeds in Kansas soybean fields have been estimated to cause losses of 13 million dollars in production each year. Therefore, weeds need to be controlled effectively and economically, while maintaining maximum soybean yields. G enetically modified soybeans offer new and exciting methods for controlling weeds. Genetically modified soybeans must maintain high yield potential, excellent herbicide tolerance, and resistance to iron chlorosis if they are to be fully implemented as a practical alternative to conventional soybeans in central Kansas.