Biological nitrogen fixation in short-season soybean varieties for Saskatchewan

Posted on 27.07.2018 | Last Modified 07.05.2019
Lead Researcher (PI): Diane Knight
Institution: University of Saskatchewan
Total WGRF Funding: $173,766
Co-Funders: Saskatchewan Pulse Growers
Start Date: 2017
Project Length: 4 Years

1) Quantify varietal differences for nodulation and BNF (biological Nitrogen fixation) using 15N isotope dilution methods. Fixed N will be measured in seed and residue, including the amount of N available to the next crop. 2) Assess how rate of N applied at seeding maximizes both BNF and yield. 3) Determine relationship between nodule number, BNF, and grain protein. 4) Investigate if nodule numbers can be modified by applying different amounts of Bradyrhizobium inoculant (specific for soybean). 5) Assess impact of low temperatures on nodulation, BNF, and productivity.