Really High Populations & Really High Yields
Posted 10/13/2021 20:01 (#9267482 - in reply to #9266309)
Subject: RE: Really High Populations & Really High Yields

East Central Ia
Interesting and almost completely counter to what we have seen.

We are in 20” rows and have been slowly lowering populations.

It is hybrid specific but generally 30-34k harvestable ears is the highest yield, not to mention the highest economic return.

Even in 90-100 CSR ground

On most farms there are so many other yield limiting factors that population has almost fallen off my radar.

What is really jumping out to me this year is how much tile is paying… in a drought.

I think the well tiled spots never had a bad day earlier in the season. We had a cold wet spell in May that really caused a prolonged N deficiency and ugly duckling stage as the corn transitioned from seed energy to roots. This coupled with good availability of N, ie planter applied, enabled the roots to “stay ahead” of the drought so to speak. The poorly drained areas in a field we harvested a few days ago there was over 200bpa difference in the wet spots that need tile and the spots that have good drainage. Kind of eye opening.
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