ABSTRACT

A mid-grade ammonium sulfate (21-0-0-24S) with a mean particle size of 1.5 mm (150 SGN) and high in uniformity (50+ UI) will become available during the second half of 2004. It represents an efficient source of ammonium nitrogen that is not as subject to loss due to volatility as urea and UAN, can improve the uptake of phosphorus and micronutrients and suppress certain soil-borne diseases, like cotton root-rot. Plus it contains readily available sulfate-sulfur. The product has a spread pattern similar to that of granular grade ammonium sulfate or potash, but is a more economical source of plant nutrients.