Integrated Crop Management is published by the Department of Entomology , Iowa State University , Ames, Iowa. Last fall's dry weather came late enough to have only a small effect on 1999 crops, but according to Iowa State University Agricultural Meteorology Professor Elwynn Taylor, the available subsoil moisture was largely depleted by the end of the growing season. Although normal precipitation in June would be sufficient to correct the conditions statewide, the long-range outlook from the National Weather Service indicates that this spring may be warmer and drier than usual.
Adequate water is especially important at planting time.
Without sufficient topsoil moisture, seed germination could be impaired, resulting in low plant populations and low yield. Drought also can cause increased insect infestation, plant disease, and wind erosion. If you've experienced insufficient precipitation since harvest, you should consider modifying your spring tillage management plans before heading out to the field. Conserving sufficient topsoil moisture for early growth can help the plant bypass deficiencies in subsoil moisture. Getting the crop off to a good start this year may be critical, especially if subsoil moisture is replenished later in the growing season.