Reprint From June 2003 Ward Letter. Ward Laboratories professionals often get questions about surface urea application and UAN solutions. Urea is a dry fertilizer that dissolves with water after application creating urease enzyme activity that is naturally present in all soils at some level. Urease enzyme converts urea to ammonia (NH3) and bicarbonate (HCO3) in...Read More

Every once in awhile I get asked if soybean plants or stubble should be tested for nitrates.  Soybeans are legumes like alfalfa, and like alfalfa, under stressed conditions can accumulate a toxic concentration of nitrates.  Soybeans are listed as nitrate accumulators by the Iowa Beef Canter.  Therefore, if you are having doubts, send a sample...Read More