What is in this article?:
- Early Corn Growth May be Slow, But Don't Throw in the Towel Just Yet
- Assessing Your Field
Assessing Your Field
- Before rushing out to start over with this year's corn crop, take the following steps to evaluate your situation:
- Leave the fields that you have already planted until all other fields with high yield potential are planted. Doing this will give you the opportunity to clearly assess the corn stand and yield potential.
- Assess the actual corn population. Use this corn stand as a starting point for whether to replant. Conditions in Nebraska vary widely for ideal corn populations depending on whether the field is irrigated, the average annual precipitation and the length of growing season.
- Assess the uniformity of germination in the field. Cornfields with non-uniform plant emergence will have lower yield potential than fields with uniform emergence.
- Use the data you have collected on plant population and uniformity of emergence to clearly identify how quickly the field can be replanted and determine if the cost of replanting plus any potential yield increase justifies replanting.
Generally, corn planted after May 1 (depending on your location in Nebraska) will lose about 1 bu./acre/day of yield potential.
In many cases, this assessment will likely indicate that replanting is not justified unless the cold, wet weather conditions persist. However, plant stands may be considerably lower than planting populations because the longer the seedlings sit in the soil before germinating, the more susceptible they are to early season diseases and insects. The best recommendation for addressing this risk is thorough and frequent scouting.