All eight retail fertilizer prices tracked by DTN recorded increases in the first week of November, with urea leading the way month over month.

Urea recorded a $19-per-ton increase, spiking from $389 last month to $408 in this latest update. In one year, the price of urea increased $78/ton.

Anhydrous ammonia saw a $17/ton price increase to $505 compared to last month and is up $104/ton in the past year.

Urea-ammonium nitrate (UAN) 28 came in at $245/ton, jumping $8 since last month.

Fertilizer prices higher across the board

Injecting liquid manure as a crop nutrient.

Both 10-34-0 and UAN32 recorded $6/ton increases since last month. UAN32 came in at $285/ton and 10-34-0 at $457/ton.

Diammonium phosphate (DAP) and Monoammonium phosphate (MAP) each saw price increases of $5/ton since last month, at $506/ton and $528/ton, respectively.

The price of potash increased by $2/ton to $366.

On a price per pound of nitrogen (N) basis, the average urea price was at $0.44/lb. N, anhydrous $0.31/lb. N, UAN28 $0.44/lb. N and UAN32 $0.45/lb. N.

Manure advantages

While most fertilizer prices are moving higher, a new study finds another popular fertilizer—manure—has a number of advantages over its inorganic counterparts.

Researchers at the University of Wisconsin-Madison announced the results of a 12-year study finding long-term annual application of manure improved most soil quality properties compared to inorganic fertilizer.

The team of scientists studied corn and soybean fields in South Dakota from 2003 to 2015.

The team applied either manure or inorganic fertilizer to field plots using low, medium and high manure levels, and medium and high inorganic fertilizer levels. They collected and analyzed soil samples in 2015 at a variety of depths.

Results showed manure helped keep soil pH—a measure of acidity or alkalinity—in a healthy range for crops. Inorganic fertilizer made the soil more acidic.

The study found manure increased soil organic carbon for all the measured soil depths compared to inorganic fertilizer and control treatments. Manure increased total N significantly compared to fertilizer treatments.

In addition, researchers found manure increased water-stable aggregates that help soil resist water erosion. Results of the study were published in Soil Science Society of America Journal.

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.

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. —Todd Neeley, DTN

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