jamaicaecil - 7/18/2016 22:53
That is one thing that some prime Illinois dark soil types struggle with on the k issue. They will soak up potash like a sponge; trying to load your base sat to 3-4% is tough financially. I think banding could help tremendously with that by keeping the higher concentration from being tied up.
The problem with banding K is:. In the fall the K is in the residue and will be broadcasted. So the band only lasts 1 season. These low k soils need too much k to band it all without a salt issue.
I like topdress potash for these soils to prevent a shortage in the plant.
It takes good calcium levels to get k into the plant. 60% min 65% is better.
Potash is getting cheaper right along now with big supplies and low demand. $220/ ton now. A good opportunity to apply several hundred pounds cheap.
Edited by JDPlowboy 7/19/2016 07:58
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Corn Potassium Deficiency
