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G76-301 How To Tell Corn, Sorghum Maturity, J.D. Eastin, J.T. Hultquist, C.Y. Sullivan
G76-301 How To Tell Corn, Sorghum Maturity, J.D. Eastin, J.T. Hultquist, C.Y. Sullivan
University of Nebraska-Lincoln Extension: Historical Materials
Researchers have discovered a way to tell when corn and grain sorghum have stopped filling — when they are physiologically mature. A layer of cells near the point where the kernel is attached to the plant turns dark brown as the kernel nears maturity and, finally, black when the kernel is mature.
This NebGuide discusses how to read maturity in the layers of corn and sorghum.