High Temperature Effects on Corn, Soybeans
High-temperature stress is usually associated with drought. Heat stress and drought intensify damage to corn and soybeans but either may cause major crop injury alone. The recent high temperatures, i.e., record numbers of days above 90° F, and in some locales 100° F, have generated questions about the impact of high temperatures on corn and soybeans. How much heat stress can these crops withstand without incurring major yield losses even when adequate soil moisture is available?