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Western NY | First I apologize for the length of my question but I need your input.
Putting some corn back into my rotation to raise organic matter and improve my soil and APH. The county average here is 175. My equipment includes 6 row Gladiator strip till, JD 7000 planter w/ dry fertilizer single disk openers, Hiniker 6000 no-till cultivator and a PT sprayer. Based on an my last soil test OM% 2.3-3.9%, PH 6.5-7.5, P 15-86 ppm, K 50-100 ppm, Sulfur 5-11 ppm CEC 8.3-14, Base saturation: Ca 72-86%, Mg 8.6-14%, silt clay loam in Western NY with some tile. I'll pull new tests this spring and hopefully the numbers will be better.This would follow soybeans.
Based on the AgPHD app a 200 bu Corn grain removes 134N, 70P, 50K, 16 S, .2 Zn, .48 B. Stover removes 90N, 32P, 220K, 14 S, .3 Zn and .05 B. I won't be baling the stover. So should I fertilize for grain removal only or total removal. Are these numbers practical? The total 220# K removal worries me because my K levels are low.
Initial idea: Put 15 gal 32% N 6 inches deep with the strip till pass, Planter pass 3 x 2 dry (150# 11-52-0, 100 # K-Mag, 100 # 0-0-62) then side dress 32 gal of N at V5. That would give me 180 N, 78 P, 71 K, 21 S and add .5 # Zn @ $175 per acre. Also considering 5 gallon of 10-34-0 or 3-18-18 in furrow and adjust the dry. Many on here say that in furrow doesn't help yields. Another option but probably too expensive is put 10 gal of 3-18-18 or another mix with the strip till pass for K under the plant then lower the dry rate. Can I get good corn yields with my low K soils? Would broadcasting extra K give a ROI this yr on the low testing fields or would the 3x2 band be adequate? Also cost is a factor but you can't sacrifice yield potential either when corn is $3-4.
What would you do for the best ROI. Honestly I will be happy to average 150+ bu this year to prove I can grow corn and go from there? People near me are getting 170-200 so it should be possible.
Thanks for replies
Edited by High Acres 3/16/2019 19:11
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Fertilizer for 200 bu corn help
