Phosphorus fertilizer guidelines: Four Midwest experts talk profit, yield, soil tests & more
In this episode of the Nutrient Management Podcast, we’re talking about phosphorus fertilizer guidelines throughout Minnesota and the Midwest. What are current state guidelines throughout the region, and are they satisfactory? Should farmers forgo taking a soil test to measure their P levels, or should the test be prioritized? Might state phosphorus guidelines need to be revised, and if so, in what ways? What guidance or advice pertaining to phosphorus guidelines would our panelists tell growers?
Guests:
- Daniel Kaiser, Extension nutrient management specialist (St. Paul)
- Antonio P. Mallarino, Professor emeritus, nutrient management, Iowa State University (Ames, IA)
- John Jones, Soil Fertility, plant nutrition, and nutrient management research, University of Illinois Urbana-Champaign, (Urbana-Champaign, Il)
- Dorivar Ruiz Diaz, KSU Professor, Soil fertility and nutrient management, Kansas State University (Manhattan, KS)
Additional resources:
- Phosphorus and potassium
- Understanding phosphorus fertilizers
- What is the best soil test option for phosphorus?
- Fall vs. Spring: When to apply phosphorus?
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Support for the Nutrient Management Podcast is provided by Minnesota's fertilizer tonnage fee through the Agricultural Fertilizer Research & Education Council (AFREC). Learn more at MNsoilfertility.com.
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