Recent sunshine and warmer air temperatures have helped boost soil temperatures in Iowa. The featured chart is of daily ranges between high and low four inch depth soil temperature for the ISU Soil Moisture Network station at the ISU Horticulture Farm. The key level of 50 degrees is highlighted as it is often used as a threshold to start planting corn. The past three days we have mostly held this threshold for the location. It is still early in the planting season to keep temperatures always above this level, but the hope with early planting is that the periods below 50 are brief (not persisting for consecutive days).

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