Influence of Soil Temperature on Corn Germination and Growth

Abstract

<p>We experienced June-like temperatures in March. Trees budded, spring flowers bloomed and fertilizer rigs crisscrossed fields. Soil temperatures matched what we normally experience in late April and early May, jumping well ahead of previous records.</p> <p>Because of the unparalleled warm March weather, many wonder about planting corn. Perhaps some did plant. This year’s warm spring temperatures encouraged early development of flowering trees and shrubs, as well as lawns, pastures and early weed-flushes in many fields - But wait until at least the April 11 crop insurance date to plant corn! Data from other scientists and Iowa planting date studies – suggests to plant corn after mid-April when soil temperatures are near 50 degrees Fahrenheit to maximize yield.</p>