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Sustainable Plant Nutrient Management for Optimal Growth

Learn how to effectively manage plant nutrients through proper fertilization and manure planning, ensuring economic benefits and environmental sustainability. Discover potential pathways of soil and water pollutant movement and monitoring techniques to maintain soil and water quality.

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Sustainable Plant Nutrient Management for Optimal Growth

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  1. Question 2 How much of the nutrient should I apply??

  2. Plant Nutrient Utilization • Plant utilization • Corn uses 0.7 lb/bu N 0.4 lb/bu P2O5 • Beans use 3.8 lb/bu N 0.8 lb/bu P2O5 • Plant fertilization • Corn needs 1.2 lb/bu N 0.4 lb/bu P2O • Beans need 0.0 lb/bu N 0.8 lb/bu P2O

  3. Steps in Manure Nutrient Management • 1. Determine crop nutrient needs • 2. Determine manure nutrients available • 3. Calculate hectares needed for the manure • 4. Calculate manure volume to apply

  4. Summary - Manure Planning • Not difficult to do • Economically advantageous • Manure can replace purchased fertilizer • Using manure correctly is good for the environment

  5. Potential Pathways • PollutantPathway • Nitrate – N Leaching & Runoff • Ammonium – N Surface water runoff & Aerial deposition • Phosphorus Surface water runoff • Pathogens Surface water runoff • Organic Matter Surface water runoff

  6. Soil and Water Quality Monitoring Techniques • Soil sampling • Surface water sampling • Surface runoff • Open ditch or irrigation canals • Small or large rivers • Ponds, lakes, reservoirs • Ocean, sea • Wetlands • Groundwater • Shallow groundwater • Deep groundwater

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