OMAHA (DTN) -- Over the past several weeks, retail fertilizer prices appeared to be beginning their seasonal move lower, but that trend reversed this week. All eight major fertilizer prices tracked by DTN increased in the second week of September compared to last month.
The price of urea jumped significantly higher compared to last month, breaking with the trend of only minor price movements. Urea is up 5% compared to the second week of August with an average price of $380 per ton.
The remaining seven fertilizers were all higher from last month, but their move to the high side was fairly small. DAP had an average price of $491/ton, MAP $518/ton, potash $362/ton, 10-34-0 $449/ton, anhydrous $487/ton, UAN28 $238/ton and UAN32 $278/ton.
On a price per pound of nitrogen basis, the average urea price was at $0.41/lb.N, anhydrous $0.30/lb.N, UAN28 $0.43/lb.N and UAN32 $0.43/lb.N.
With retail fertilizer prices moving higher, many farmers are analyzing their fall fertilizer application needs from a profitability perspective.
University of Minnesota Extension soil fertilizer specialist Daniel Kaiser and researcher Jeff Vetsch looked at some frequently asked questions about fall fertilizer decisions in a blog post.
The first question many farmers ask is: Do I need it or not?
Recent Minnesota research has shown fertilizer is needed to increase yields in fields testing low in phosphorus (P) and potash (K). However, the same research has shown no inherent benefit to maintaining high- to very-high-P-testing soils.
"Some may argue their highest-testing soils are their best-producing fields, but remember fertilizer is not the only thing dictating yield levels," the post said. "Reducing inputs on very-high-testing fields is the best way to use soil testing to improve a farmer's profitability."
Another common question the authors address is whether farmers need to apply potassium. Research in Minnesota has shown that potash can be a yield-limiting factor.
For soils higher in clay, like loam and clay loam soil, the potash soil test can over-predict availability in soils, which can lead to under-application of K. UM Extension suggests growers in central and western Minnesota use 200 parts per million (ppm) as a critical level for soil test K if they are using a maintenance strategy.
"On silt loam soils in the southeastern part of the state, a critical level of 160 ppm is enough," the post said. "On very sandy soils with cation exchange capacity (CEC) of 8 or less, our research has seen no yield response in corn or soybeans when soil test K is less than 100 ppm."
Other questions included in the blog post were about MAP versus DAP applications, using co-granulated products and base saturation with K. The entire report can be viewed at http://blog-crop-news.extension.umn.edu/…
All eight major fertilizers are now higher compared to last year with prices pushing higher throughout the year. Both potash and 10-34-0 are now up 8%, UAN32 is 12% higher, UAN28 is 13% more expensive, both DAP and MAP are 14% higher, anhydrous is up 18% and urea is 23% higher compared to last year.
The remaining three fertilizers are lower in price compared to a year prior. Both 10-34-0 and UAN32 are 1% lower while UAN28 is 2% less expensive looking back a year.
DTN collects roughly 1,700 retail fertilizer bids from 310 retailer locations weekly. Not all fertilizer prices change each week. Prices are subject to change at any time.
DTN Pro Grains subscribers can find current retail fertilizer price in the DTN Fertilizer Index on the Fertilizer page under Farm Business.
Retail fertilizer charts dating back to 2010 are available in the DTN fertilizer segment. The charts included cost of N/lb., DAP, MAP, potash, urea, 10-34-0, anhydrous, UAN28 and UAN32.
DTN's average of retail fertilizer prices from a month earlier ($ per ton):
|Sep 11-15 2017||431||456||336||310|
|Oct 9-13 2017||432||453||347||325|
|Nov 6-10 2017||434||459||341||338|
|Dec 4-8 2017||438||471||343||344|
|Jan 1-5 2018||452||490||345||350|
|Jan 29-Feb 2 2018||458||492||344||355|
|Feb 26-Mar 2 2018||461||497||346||361|
|Mar 26-30 2018||470||506||350||370|
|Apr 23-27 2018||485||504||353||367|
|May 21-25 2018||483||504||354||364|
|Jun 18-22 2018||485||505||354||364|
|Jul 16-20 2018||486||505||354||366|
|Aug 13-17 2018||487||508||356||363|
|Sep 10-14 2018||491||518||362||380|
|Sep 11-15 2017||416||412||210||248|
|Oct 9-13 2017||413||397||206||253|
|Nov 6-10 2017||403||409||216||272|
|Dec 4-8 2017||404||424||215||251|
|Jan 1-5 2018||409||474||219||256|
|Jan 29-Feb 2 2018||415||491||227||261|
|Feb 26-Mar 2 2018||416||496||233||279|
|Mar 26-30 2018||425||507||237||272|
|Apr 23-27 2018||431||507||241||277|
|May 21-25 2018||439||504||241||276|
|Jun 18-22 2018||440||503||242||277|
|Jul 16-20 2018||442||503||243||279|
|Aug 13-17 2018||446||481||233||271|
|Sep 10-14 2018||449||487||238||278|
Russ Quinn can be reached at firstname.lastname@example.org
Follow him on Twitter @RussQuinnDTN
© Copyright 2018 DTN/The Progressive Farmer. All rights reserved.