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Planter applied fertilizer, what and how?
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DobsonAG
Posted 10/13/2018 13:10 (#7044432 - in reply to #7044141)
Subject: RE: Planter applied fertilizer, what and how?


Donnellson, IA. Makes saying here easier.		Nailed it. Too many years people must of had a much better lime salesman than a fertilizer dealer. So many fields have higher pH than needed. Especially along field edges where limestone gravel roads do the liming. So P application can be tied up. The bigger issues I dont have time to write all about today. But too much of the benefits of a notill system depend on one thing. Long term.....and maybe your region is much better than ours on knowing you are locked in long term but land is traded here worse than ever before. I like modern deep placement with RTK guidance. If I only get it 3 years I'm placing my fertility and in same band every year. If I get it longer great I'll have decent numbers very close to the highest density of roots. Especially when some soills are single digit p1 and double digit K. I can't afford to donate the whole profile fertilizer for a few seasons. Plants may have survived millions of years with stratified soils but I bet some years they would have barely gotten by and not reached top potential. With high cash rent and lower commodity prices, I like to place as much groceries as close as possible. Another thing that old study's often never mention is soil particle stratification and them returning to where they like to be based on particle size. Here in the land of miss assumed 5ft prairie soils cause it says Iowa. It amazes me that in one season a farmer can run a ripper 12-14" deep in a soil with 4-6" if decent top soil, a couple inches of transition, and then clay you can make pots out of below that. All mixed together in the fall, worked once maybe twice with full scale tillage in the spring and planted. Then when you soil sample for them that next fall if you grab a 12" core its 4-6" of dark good particle soil fb 2" of a grey maybe okay density and size then orange small particle soil at the base of core. So naturally they didn't break the stratification as the soil naturally returns to its original position and the nutrients associated with them stay and create the same results on soil tests. Even in uniform soil the same will happen. Much move life and activity on the surface and more pore space and particle size where more oxygen is present. I do love the articles in notill farmer and actually receive the magazine. Notill farm for many years. But all current expansion is rented and short leases and since switching to both plant and tissue sampling we are strip till even on soybeans to maintain late season K numbers. Our Ca and Mg numbers don't allow near the build I'd like to have. Our planter is able to notill and we still do some especially on soybeans planting into rye on bands from corn that a heavy shot was placed the year before. We like that on some rolling ground and plant into rye cover green. About 70% of our acres have cover crops. Mix depends on time of year. Behind wheat etc. Thanks for the posts I enjoy seeing different angles. I'm only operating on the results we are seeing and this year they are better than ever especially where it rained.

Edited by DobsonAG 10/13/2018 13:15
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