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By John Sawyer, Department of Agronomy
A previous article explained the difference between ammonium and ammonia, the relationship between the two nitrogen forms and the implication of a combined (ammonium-N plus ammonia-N) analysis related to water quality criteria for aquatic life. This article focuses on the implication of ammonia and ammonium for chlorination of drinking water.
By Mark Hanna, Department of Agricultural and Biosystems Engineering
Many Iowa planter operators are faced with wet soil conditions this spring. Operators will want to wait for suitable conditions to avoid “mudding in” a crop with significant investments in seed, fertilizer, machinery and time.
