Harvest Planning Starts Now

As the application season comes to an end, we are shifting our focus toward harvest preparation and estimating yields. August is the time of year when we begin making kernel counts to get an idea of how different fields are performing. While yield estimates can vary quite a bit, they provide a good indication of which fields have the highest production potential and help prioritize harvest plans. It is also a good opportunity to scout fields for late-season diseases that could impact stalk quality and standability before harvest begins.

When making yield estimates, we count the number of kernel rows around the ear and the number of kernels in each row. We also take a stand count and multiply that population by the average number of kernels per ear. We typically sample three to four ears per area to get a representative average. Once we have an estimated kernel count per acre, we divide by 85,000 kernels per bushel, which is considered a good average under normal conditions. If test weights are expected to be exceptionally high, a lower kernels-per-bushel number may be more accurate, which is one reason yield estimates can vary so much. We experienced favorable pollination weather and have received timely rainfall to support kernel fill, so I expect average to above-average test weights unless August turns significantly drier.

It is still a little early to evaluate stalk quality because most stalk integrity issues develop as the crop begins to mature and dry down. However, this is an excellent time to scout for late-season disease pressure. Even if disease arrives too late to significantly reduce yield, it can still weaken stalks and reduce standability, creating harvest challenges. Fields with higher disease pressure will typically deteriorate more quickly and should be scheduled earlier in the harvest season. Taking notes now can help prevent unnecessary harvest losses later this fall.

If you have questions about late-season corn scouting, yield estimates, or harvest planning, contact your local SFG Agronomist. We would be happy to help evaluate your fields and develop a harvest strategy that maximizes both yield and grain quality.