Some Virginia crops like it hot

Published 1:10 pm Tuesday, August 8, 2023

While blazing summer heat can stress certain crops, some like it hot, especially peanuts and cotton, said Virginia Cooperative Extension agent Elizabeth Cooper. In Southside Virginia, where she works, these summer crops are a cornerstone of the regional economy, along with corn and soybeans.

“There’s a reason we’re one of the northernmost areas producing cotton and peanuts on the Eastern Seaboard,” Cooper explained. “The heat we have out here is what drives the production and yield of both of those crops. They need what we call heat units, or growing degree days, for the crops to meet certain growth stages at certain times and produce the yields we need to be profitable.”

State statistician Herman Ellison of the National Agricultural Statistics Service reported abnormally dry-to-moderate drought conditions statewide in late July, with hot, humid weather and spotty rain.

“I remember my daddy said cotton likes good, hot weather, but it doesn’t like a desert,” said lifelong crop and cattle farmer Richard Gwaltney. “It needs some rain for a good crop, but does well at high temperatures. Peanuts are good in hot weather too, though humidity can cause disease. With low humidity and hot weather, they’ll do great!”

A shift to no-till farming practices in the last 20 years preserves more moisture in the soil.

“It works like a sponge to hold that moisture, which is helpful in a dry year,” Gwaltney added. “And there has been a lot of breeding in corn varieties that make them more tolerant to drought, especially with sandy land where you know it’s going to be dry.”

Cooper said farmers can further protect crops from heat stress through irrigation systems, and help livestock stay cool by providing shade cloths or stands of trees.

Her outlook is generally optimistic for this summer’s growing season in Southside.

“We have some sections of the counties that look fantastic and others that could use a few shots of water to get them through,” Cooper said.