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