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Nutrient Management

Nutrient Management. Adapted CNMP Core Curriculum. Section 5.3 – Estimating Land Requirement. Presented by: Roberto Maisonnave, Ag Engineer & M. Sc. International Environmental Consultant robermaison@hotmail.com www.ambientagro.com. Objectives.

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Nutrient Management

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  1. Nutrient Management Adapted CNMP Core Curriculum Section 5.3 – Estimating Land Requirement Presented by: Roberto Maisonnave, Ag Engineer & M. Sc. International Environmental Consultant robermaison@hotmail.com www.ambientagro.com

  2. Objectives • Relation between number of pigs with crop land needed for the agronomic usage of manure. • Impact of your waste treatment system in the annual volume of available manure and nutrients. • Relevance of the agricultural cropping system in your manure management plan.

  3. Manure Nutrients Production • These values are only a function of animal type, live weight and diet • Relatively uniform within a reasonable range

  4. Treatment & Storage N & P

  5. Land Application SystemAL vs ST

  6. Available Nutrients Summary • AL: Anaerobic Lagoon • SI: Sprinkler Irrigation • UI: Underground Injection PAN*: Plant Available Nitrogen

  7. Cropping System • Crops / year: Corn, Wheat/Soybean, garden crops • Tillage system • Fallow period • Decay time for manure decomposition (direct human consumption crops)

  8. Land Requirement Example #1 • 10.000 kg/ha Corn @ 22 kg N/ton grain • N-based application

  9. Land Requirement Example # 2 • 10.000 kg/ha Corn, 4.500 kg/ha Soybeans

  10. Unbalance Manure N/P ratio • Generally, • Manure: 5N / 1P • Crop Uptake: 3N / 1P • N based application: P over application • P based application: N shortage

  11. Summary • 5.000 Finishing Site will produce a fairly constant amount of manure, nitrogen and phosphorus. • Select a Treatment & Storage and Land Application System that not only comply with Environmental Regulations but also fit in your agricultural production scenario.

  12. Summary • Cropping system is flexible but SOIL AG POTENTIAL is not. • Be realistic about crops and yields. • Different crops and rotations for different soil nutrient scenarios.

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