Black Layer Helps Guide Corn Harvest Timing
September 21, 2021 | By Rupp Seeds
Corn kernels achieve black layer or physiological maturity when a black film develops at the tip of a kernel. The black film or layer seals the kernel from further development or increase in test weight. The kernel moisture content at black layer formation usually ranges from 25% to 40%, and averages around 30% moisture.
When you are preparing to harvest your corn crop, keep these key points in mind:
- Physiological maturity in corn is determined by kernels reaching black layer.
- Timing of corn maturation can be greatly affected by environmental issues.
- Grain moisture content should be monitored once black layer is achieved.
- Harvesting should take place at a moisture content that balances harvest losses and grain drying costs.
Learn more in this issue of SeedScoop.
Black Layer Helps Guide Corn Harvest Timing