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near Mtl, QC | Long story short: I have some high OM zone ( 6.5%-8%) that produces really well on soybeans, but not on corn. Those zone corn is ok only the year after soybean, and is pretty much bad if I go corn on corn. However, OM is really good (6-7%) and the corn grow and looks very good until august (after tassel). I tought in the past it was maybe running out of N, or not enough rain.
Other zone in the same field grow really good corn, often my best.
Here is the soil sampling highlights of those high OM zones:
PH: 7.06
BPH: 7.46
CEC: 23.7
OM%: 6.81
P: 148 lbs/a
K: 239 lbs/a
Ca: 8409 lbs/a
Mg: 533 lbs/a
K BS: 1.28%
Ca BS: 87.9%
Mg BS: 9.28%
On other zone that are my best zone for corn:
PH: 6.36
BPH: 7.19
CEC: 16.2
OM%: 2.28
P: 39 lbs/a
K: 223 lbs/a
Ca: 4602 lbs/a
Mg: 413 lbs/a
K BS: 1.75%
Ca BS: 70.5%
Mg BS: 10.5%
One side note about CEC I don't really understand that high of a value, ground is not clay at all, pretty much loam here.
To continue with my main question, I started ready Neal Kinsey book (about 25% read) and everything I read for now make really some sense. The good one have Ca BS % and Mg % perfectly balanced, the other one there is too much calcium there.
So that let me ask is it possible and how to lower calcium? I don't mnd if it's a multi year work. Seems like by applying sulfur would be the way to go? If so is there a way to calculate how much/year I can apply? Maybe by putting all the N needs with AMS? Or elemental sulfur would be a better choice?
TIA | |
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Can Ca BS % be lowered and how?
