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Angie Peltier

Angie Peltier
Former Extension Educator, Commercial Agriculture

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Hill and Furrow

Current topics about crop production in Western Illinois, including field crops research at the NWIARDC in Monmouth.
Figure. Earliest soybean planting dates for which replant payments will be issued in Illinois according to COMBO crop insurance policies (source: Farm Doc).

How will the mild weather affect planting date?

If your field is dry enough 2012 to begin planting, which is likely with the below average rainfall in 2012, you may be chomping at the bit to get into the fields before spring rains delay planting. Only you can decide what is best for your operation. However early planting increases the likelihood that seeds will be exposed to stressful environmental conditions. Here are a couple of risks to take into account when thinking about early planting:

1) Seed/seedling growth is retarded at temperatures below 50 °F.

2) A doorway for pathogen entry into the seed is created as soon as the first root penetrates the seed coat. Depending upon environmental conditions, this may result in a race to see which happens first, seedling emergence or rotting of the seed.

3) Seed treatment activity is not indefinite.

4) Be aware of the earliest planting date in your crop insurance policy. Acres planted before these dates

(Figure) are not eligible for replant payments. Specifics about earliest soybean and corn planting dates can be found at the University of Illinois Extension's Farm-Doc website: (

5) Low seed-corn yields last year may result in a short seed supply this year.

6) Local research has shown no yield advantage to early planting.

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