By Tom J. Bechman
Originally published by Farm Progress in September, 2011
Sixty days after corn kernels start to develop, the black layer should form. Corn is physiologically mature at that point, and nothing can affect what’s in the kernel. Depending upon where you live, a portion or all of your crop may be at that stage. Especially in the eastern Corn Belt, however, there may still be a few days or weeks to go. “Even where corn was three weeks behind in planting, it was only one week behind by grain fi ll,” says Bob Nielsen, a Purdue University corn specialist. The native Nebraskan maintains the Chat’n Chew Café website used by corn growers throughout the country.
■ Corn kernels with a milk line aren’t physiologically mature.
■ Moisture content can vary widely at black layer.
■ Harvest maturity means harvest won’t greatly damage kernels.
For more information: http://magissues.farmprogress.com/ipf/IN09Sep11/ipf021.pdf