Volume
5 Issue 7
July 1, 2008
Best Management Practices for N
I
have sticker shock. No, I haven’t been shopping for a car. I just
finished a long conversation with crop producer in west-central MN
who I consider to be an excellent manager always making decisions
based on the best information available. He’s been pricing N for the
2009 crop year.
I’m
shocked. If purchased this fall, the price per pound of N will be
somewhere between $.53 and $.64. If purchased next spring, the
quoted price was about $.94 per pound of N. I can remember when
82-0-0 cost $.05 per pound of N. Now you know how old I am. While
these prices may or may not be accurate for the entire state, they
do show what is happening in the fertilizer world. The situation is
real and it’s serious. The choices that revolve around management of
fertilizer N (rate, source, placement, time of application, use of
additives) rise to the top of the decision list.
With the high prices in place, it is essential that fertilizer N
be applied in such a way that the potential for loss of fertilizer N
be kept at a minimum. Best Management Practices that will achieve
this goal have been identified and are now in print or available
electronically. Printed copies are available (NO COST) from:1)
Research and Outreach Centers, 2) Regional Extension Centers, and
3.) the Distribution Center of the Minnesota Extension Service.
There are 7 publications (Figure
1) and each has a different web URL. These are as follows:
These publications were written by University of Minnesota
faculty located at Research and Outreach Centers or the Department
of Soil, Water, and Climate. The Best Management Practices are based
on research. They are designed to maximize profit while keeping
potential N loss to a minimum.
These publications can be a very valuable aid in making decisions
about the use of N fertilizers before moving into the next crop
year.
George Rehm
U of MN Soils Scientist Emeritus
posted on 26 Jun 2008, AgBuzz
http://minnesotafarmguide.com/blog/?cat=21
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