429-16 Instinct® II Nitrogen Stabilizer Reduces Nitrification in US Spring Wheat Fields.

Poster Number 1102

See more from this Division: SSSA Division: Soil Fertility & Plant Nutrition
See more from this Session: Soil Fertility & Plant Nutrition: II

Wednesday, November 18, 2015
Minneapolis Convention Center, Exhibit Hall BC

Mike Moechnig, Dow AgroSciences, Toronto, SD, Eric Franklin Scherder, Crop Protection Research and Development, Dow AgroSciences, Huxley, IA, Joseph Yenish, Crop Protection Research and Development, Dow AgroSciences, Billings, MT and Patricia Prasifka, Crop Protection Research and Development, Dow AgroSciences, West Fargo, ND
Abstract:
Instinct® II (nitrapyrin) has been applied with nitrogen fertilizers to effectively reduce nitrification in corn fields throughout the Midwest and Southern US.  However, there has been little use of Instinct II in spring wheat fields, which includes approximately 5 million hectares in the US, despite the widespread application of nitrogen fertilizers in these fields.  Field research conducted from 2012 to 2014 in some of the primary spring wheat producing states (Washington, North Dakota, and Minnesota) with urea and UAN fertilizers demonstrated that the addition of nitrapyrin with these fertilizers increased the amount of soil NH4+ at the 0 – 30 cm and 30 – 60 cm soil depths.  Increased NH4+ generally persisted 4 to 6 weeks after application.  When Instinct® II was applied with urea and UAN sources, greater yields were observed in a majority of the treatments.  In summary, results from this research demonstrated that the addition of Instinct® II with urea or UAN fertilizers stabilizes ammoniacal nitrogen in spring wheat fields which can reduce the amount of nitrogen loss due to leaching and denitrification while at the same time optimizing the potential for greater spring wheat yield.

See more from this Division: SSSA Division: Soil Fertility & Plant Nutrition
See more from this Session: Soil Fertility & Plant Nutrition: II