- Soil temperature
- Soil Moisture (covered below)
- Soil Surface Crusting Potential
- Soil to Seed Contact
- Soil Compaction
One of the biggest yield robbers (culprit of uneven germination or poor emergence) is due to highly variable soil moisture conditions at planting. Soil moisture variation can be caused by different soil types, tillage patterns, Mother Nature, or seedling depths. Too much water at planting can limit oxygen to seed and restrict growth of corn seedling. There is also a risk of poor or uneven germination if soil moisture conditions are too dry at planting or if the planting depth is too shallow. Be sure to have the appropriate seedling planting depth for optimum corn germination.
Scouting for corn emergence problems is strongly encouraged early in the season so that prompt replant decisions can be made. Burrus provides an easy to use replant chart in their 2016 Growing “pocket” Guide on page 18.
When using this chart, keep in mind that Burrus has different recommended planting rates (A – Higher, B – Moderate, and C-Lower) for their hybrid seed corn, and this information can be found on page 17 of the 2016 Growing “pocket” Guide.