The Use of Allganic® Nitrogen for Organic Wheat Production, 2013
Allganic® Nitrogen, containing 16% nitrogen (N), is also known in the trade as sodium nitrate or Chilean nitrate, and is a natural product obtained from the Caliche ore in the Atacama Desert of Chile by mechanical and hydraulic processes. The caliche ore, a "nitrogenous rock" undergoes physical processing at low temperatures similar to those of the surrounding environment. Due to its natural origin, Allganic® Nitrogen is an allowed input in USDA certified organic farming.
Allganic® Nitrogen does not require transformations in the soil to become part of the soil solution and be available for plant uptake. This fertilizer can be applied at different times during the early growing season, or at least until the last cultivation. Because of these two characteristics, Allganic® Nitrogen can be used to synchronize available soil N with crop demand during the important early growth stages.
Working with Kathleen Delate, Professor, Iowa State University Organic Agriculture Program, we investigated the use of Allganic® Nitrogen to supply 20% of the N required by organic wheat. This research was conducted on a wheat field in Jefferson, Iowa, in 2013. This product has proven to be particularly important in early season when soil temperatures are still cold and at times of excessive spring rains, which may reduce available soil nitrogen by limiting N mineralization rate and by increasing nitrate leaching, respectively.