Wednesday, July 3, 2013

Fall Applied Nitrogen

"Here is a pic of one of my fields v the neighbor. I topdressed 100# urea and 50# AMS. He put down 180# of fall NH3 + broadcast 18-46-0 this spring and some AMS. Both fields were soy last year. I have 175 total units of N and planted 2 days after him. My corn is about 6" taller and WAY greener. The pics don't do it justice. I take all of his water and mine still looks better. I am sure he has some DK number. Mine is Croplan 3899 double pro.

Mine is on the left, his is on the right.

I am a huge believer on IN SEASON N and no more fall stuff ever.( my advice is watch the never say never stuff, that has come back to haunt me LOL but I think this one is good advice.)   Gonna increase the in-season rate next year. AMS is an absolute must.

I wont show you pics of the rest of the field. Hoping for 140 BPA. Should make 180+ here. Lots of zero on the other side of the field (see emergence forum)

***Almost forgot. Almost no leaf burn. Used full rate of Agrotain on the Urea***"

If you read the thread, you can tell those who use this practice don't really want to talk about these results!  It takes a really open mind to change practices after 30-40 years of doing things one way.

Fall applied nitrogen was big in Iowa but never worked in Ohio.  We get too much leaching of nitrogen in our soils and the fall applied thing is dying a slow death like moldboard plowing did.

My friend John Haggard is making a good living helping farmers grow corn like that on the left or even better.  John uses Albrecht principles similar to those Neal Kinsey uses, the author of Hands On Agronomy.  That manual is a good read for any farmer or agriculturist.

John and Doug and Bill and I and whoever else might be interested in conversing about these topics comprise "the bunch," as Bill calls it.  They have all been to our farm which helps develop our pursuing of topics.

Yesterday I cut some wet wheat, talked to my neighbors and they said the heck with it, let's get it out.  It isn't going to dry down properly.  We don't have the equipment to dry it properly either.  Maybe I will get a picture posted tomorrow.

Ed Winkle



3 comments:

  1. Planning on more ams here for next year. Just wish somebody local stocked it...

    Honing to look at the neighbors forage wheat in a bit as it was planted earlier then my wheat. Mine was 16.5 yesterday aftrnoon. Yield looks to be good. Herd reports of 50-80 around here.

    Lots of green straw....

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  2. Keep asking, keep doing it and it will happen. You couldn't find boron or manganese sulfate here 20 years ago. NPK was it. Now you can find it everywhere.

    Just found this interesting comment about nitrogen in corn-

    "By the time corn accumulates 1,000 GDD, reaching about stage V13, it has accumulated about 20 percent of its dry weight and about 40 percent its season-long nitrogen accumulation (Abendroth et al., 2011) During this period the crop takes up 3 to 3.5 lb of N per acre per day, and by the time of pollination, it will have taken up about 60 percent of its nitrogen and produced about 40 percent of its dry weight.

    At the time the crop reaches stage V13 (about head-high), it still has to take up 110 to 120 lb of N, and in years when June is wet, a common question is whether or not the crop might run out of nitrogen, leaving the crop short. While the need for 20 or more lb of N per week would seem to raise the possibility of a shortage, the production of plant-available N from soil organic matter through the process of mineralization is also at its maximum rate in mid-season.

    For a crop with a good root system growing in a soil with 3 percent organic matter, mineralization at mid-season likely provides at least half the N needed by the crop on a daily basis. This means that normal amounts of fertilizer N, even if there has been some loss, should be adequate to supply the crop.

    Though we could measure soil N present or apply urea by air on the wetter field or parts of fields where the crop shows deficiency, it would seem prudent to wait to see if the crop recovers its green color before going to this expense. The loss of crop color in wet soils is due mostly to loss of root function, and roots will need to recover before the canopy does. Even without adding more N, odds are good that the crop will recover and thrive in the coming weeks, providing the weather remains favorable."

    From the Illinois IPM bulletin.

    Ed

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