Manitoba Pulse and Soybean Growers (MPSG) is reminding producers that soybeans are heavy phosphorus users.
Production Specialist Cassandra Tkachuk says large percentages of soil tests from Manitoba have shown phosphorus levels less than 10 ppm (parts per million), which is very low.
She recommends achieving a crop rotation that balances uptake and removal of phosphorus.
"If you are in that very low range of phosphorus levels from your soil test, aim to build your levels," she said. "This can be done during cereal and canola phases of the rotation or even with soybeans if needed. It's important to keep in mind the risk of seedling toxicity, depending on the crop type...your fertilizer type, fertilizer placement and soil condition."
Tkachuk notes the risk of seedling toxicity is greater with dry soil conditions.