Soil Temperature Fluctuations Stress Corn
Which fields are ready to plant first? Often it is the sandier soils as they are first to dry. But sandy soils also have lower water holding capacity and are more porous making them at greater risk from temperature fluctuations.
Wide swings in temperature challenge emerging stands causing stand loss and irregularities in young seedlings. The graph shows results of a study recording temperature fluctuations in a sandy soil field planted early. An average of 25 percent stand loss resulted from the additional stress on germinating corn as shown in the photo.