Ammonium polyphosphate solution (APP, 10-34-0, 11-37-0) is the most common liquid P fertilizer material in the U.S. today. While 10-34-0 is the most common grade of APP solution, 11-37-0 is also found in some markets. While the following comments reference 10-34-0, most comments are applicable to 11-37-0 as well. The only real differences will be …
The Value and Impact Of FFF Research
Wow! What a program at the recent Fluid Forum held in Scottsdale this past February. While we sometimes hear that there really isn’t anything new in crop nutrition anymore and that we are often funding ‘more of the same’ research – the research updates presented at the Fluid Forum say otherwise. From research trying …
Soil Nutrient Levels Can Be A Concern On Newly Acquired Land
(The following article recently appeared in a PotashCorp ‘field reports’ bulletin, Fall 2016) Changes Expected With Rented Farmland Kelvin Leibold, Iowa State University Extension farm management specialist, focuses his efforts on North Central Iowa, where between 61 to 70 percent of all farmland is rented. “Last year, there were a few farmers in our area …
Nitrogen Applications For High Yield Soybeans
Results from a two-year (mid 1990’s) Kansas State University study at four irrigated sites in Kansas show that late-season application of N to soybeans at the R3 growth stage will increase soybean yields. These results, coupled with similar results in other states, suggested that retail input suppliers, public and private labs and consultants who make …
Ammonium Sulfate and UAN Solution Blends
Depending on the supply of ammonium thiosulfate (ATS, 12-0-0-26S) at times and the purchase price differential between ammonium sulfate and ATS, there are sometimes inquiries made about substituting ammonium sulfate for ATS in blending with UAN solution. Ammonium thiosulfate is a preferred source of sulfur in clear solution fertilizers because it allows for much higher …
Density of Fluid Fertilizers
Knowing the specific gravity ( density) of fluid fertilizers is very important for accurately applying the correct rate of fluid crop nutrients. So where can we find a table or chart that presents the densities of various fluid fertilizers and blends? While there is information detailing the characteristics of common fluid fertilizers, we need to …
Specific Gravity and pH Variability Affect UAN Blending
Urea-ammonium nitrate solution (UAN) Variations in pH and specific gravity can wreak havoc on your UAN blending processes. Reasons for the variations vary, but it is prudent to be aware of what you are dealing with so that you can produce a viable end product. Nitrogen production begins with the re-formation of natural gas to …
Why UAN Solution?
The popularity of urea-ammonium nitrate solution (UAN) in the U.S. has increased steadily and substantially over the past 50 years. While direct applied anhydrous ammonia dominated the overall U.S. nitrogen (N) marketplace through the 1980s, UAN and anhydrous ammonia have each had about the same market share (nutrient basis) in the U.S. over the past …
Why Fluids?
Top 10 lists are ever popular in our culture today – so what are the top 10 advantages of fluid fertilizers? Ask a handful of farmers and dealers and you likely will come up with a handful of different answers. There are so many, and the advantages so varied, that it is not possible to …