Phosphorus Recommendation Strategies for Manitoba

Planting Corn?  Consider Safe Rates of Seed-Placed Phosphorus

The most critical nutrient for early season growth is phosphorus and for quick accessibility it is best placed with or close to the seed.  In some crops, seeding configurations and soil conditions, all the phosphorus a crop needs may be seed-placed.  In other cases, unacceptable seedling burn and germination damage may occur.

For detailed information, please read the following article prepared by John Heard, Soil Fertility Specialist with Manitoba Agriculture: Safe Rates of Seed-Placed Phosphorous for Manitoba – Narrow Row and Row Crops

Supplementary to the above article by John Heard, a commonly asked question is “How much fertilizer can I safely apply with the seed?”  The FertSeedDecisionAid was developed by South Dakota State University with the support of IPNI to help answer that question. It is available online here.


In the March 2016 MCGA  newsletter, Magda Rogalsky shared preliminary results from her MCGA-funded research project on fertilization beneficial management practices for corn in Manitoba.  In November 2016, she made a presentation at the Phoenix Tri-Society Meetingt. The 12 minute presentation titled “Phosphorus and Zinc Fertilization Beneficial Management Practices for Corn in Manitoba: Crop Rotation and Strip-Tillage Results” is available for viewing here.



Phosphorus Fertilization Strategies for Long Term Agronomic and Economic Sustainability
 –  John Heard (Manitoba Agriculture), Cindy Grant (AAFC – retired) and Don Flaten (University of Manitoba)