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Case Study
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Field bindweed is difficult to eradicate because it has a taproot that can grow to a depth of 2.5 meters (10 feet).

Bindweed can be managed through cultural control when alfalfa, rye, soybean, and sorghum are planted because bindweed cannot compete for light with these species.

Bindweed can be controlled using mechanical techniques. Intensive tillage can kill young field bindweed infestations. However, tilling must occur every 8-12 days throughout the growing season.

Bindweed can also be controlled with chemical herbicides when it is actively growing and stems are at least 30 cm (12 inches) long. Re-treatment is required because of seed and re-growth from roots. The effectiveness of herbicide is reduced when weather is hot and dry.

Scientists are searching for biological control agents for this weed. Gall midges, mites, and bindweed moths have been tested but have not proven to be effective.

Field bindweed often must be managed using a combination of all available techniques.

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