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Plant Pathology

Integrated Crop Management News

2009

Weed Science

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Degree Days - More Heat And Humidity With Bigger Weeds, Richard O. Pope Jun 2009

Degree Days - More Heat And Humidity With Bigger Weeds, Richard O. Pope

Integrated Crop Management News

Summer burst through the doors with a blast of heat and humidity. Although oppressive to people, it allowed for rapid growth of both crops and weeds. Weeds are a considerable concern in most areas, most notably where pre-plant burn downs were skipped, and where spraying has been prevented by wet fields. Most areas of Iowa gained 20 to 25 degree days more than the average mid-June week.