InfoAg 2017 Presentation
Nitrogen Management

Regency C
Tue, Jul 25, 2017
1:00 PM to 3:00 PM

Nitrogen Management (repeat)

Regency C
Tue, Jul 25, 2017
3:40 PM to 5:40 PM


Nitrogen management: Using site-specific strategies to balance agronomic and environmental goals of winter wheat production in the inland Pacific Northwest

Fertilizer management is challenging in the inland Pacific Northwest USA because of its rolling landscape and variable climate. Winter wheat yield goals vary greatly within and across fields, and so a one-size-fits-all approach to nitrogen fertilizer management is inefficient. Site-specific fertilization strategies are needed to match nitrogen supply with variable crop demand. Like elsewhere, the region has adopted a three-pronged approach that involves (1) the implementation of precision agriculture technologies, (2) the utilization of spatial soil, terrain, and crop data to predict crop performance, and (3) the evaluation of site-specific practices. This presentation will feature the regional application of remote sensing and other technologies to collect georeferenced crop and soil data, which is then used to assess crop performance and create site-specific fertilizer management plans. The presentation will also highlight evaluation tools being developed to establish nitrogen use efficiency thresholds for meeting agronomic and environmental goals. 

This talk was prepared with co-authors: Dave Brown (Washington State University) and Erin Brooks (University of Idaho)

Tai McClellan Maaz
Nitrogen Program Director
Washington State University, IPNI
Pullman, WA 99164-6420
Dr. Tai McClellan Maaz is the newly appointed director of IPNI’s nitrogen program. Prior to the IPNI, Tai was a USDA-NIFA Post-doctoral Fellow at Washington State University in Pullman, Washington. She received her Ph.D. in soil science from Washington State University, and her M.S. and B.S. from the University of Hawaii at Manoa-Tropical Plant and Soil Sciences. As a Ph.D. student, she received training in the National Science Foundation (NSF) Integrated Graduate Education Research Training (IGERT)’s Nitrogen Systems: Policy-oriented Integrated Research and Education (NSPIRE) program. In 2013, she was a recipient of the IPNI Scholar Award.