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Manure Management in Precision Farming

Manure Management in Precision Farming. Yan Tang Plant and Soil Sciences. Manure as soil resource. Nutrient values Soil amendment Crop quality Reduce commercial fertilizer. Nutrient values. Elements:

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Manure Management in Precision Farming

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  1. Manure Management in Precision Farming Yan Tang Plant and Soil Sciences

  2. Manure as soil resource • Nutrient values • Soil amendment • Crop quality • Reduce commercial fertilizer

  3. Nutrient values • Elements: Primary Nutrients: N, P, K Secondary Nutrients: Ca, Mg, SMicronutrients: Zn, Fe, Cu, Mn, B, Mo, Cl • Availability

  4. Soil amendment • Chemical Properties • Physical Properties • Biological Porperites

  5. Crop Quality

  6. Reduce commercial fertilizer

  7. Problems • Difficult in application • Environmental Issues

  8. Difficult in application • Bulky • Transportation cost • Odor

  9. Environmental issues • Nitrogen pollution • Phosphorus pollution • Other pollutants

  10. Manure precision management approach • Research trends • Best management practices

  11. Research Trends • Crop nutrients conservation • Environment conservation

  12. Best management practice(site-specific) • Manure factors • Plant and soil factors • Other factors

  13. Manure factors 1.Manure sampling and analysis 2.Nitrogen or phosphorus application strategies 3.Spatial variability 4.Manure amendments 5.Manure transportation 6.Manure processing

  14. Soil and plant factors • Soil properties • Plant requirements

  15. Other factors • Climate • Topography • Application methods • Economy

  16. Technologies in precision manure management • Database • GIS • GPS • VRT technologies

  17. Site-specific Liquid Manure Application • Measurement • Control • Documentation

  18. Determing Application Rate • Load Cell Methods • Flow Meter Methods

  19. Load cell methods • Typically consist of load cells mounted under the manure “container” on an applicatior. Laod cells can provide static and continouse stream of weight data during applicatio discharge. • Measured wighty differences dring unloasing can be used to determine applicator discharge rate. • Work with both solid material application equipment. • Static accuracy ratings : 99.5 % • Error: Ground surface roughness and movement of liquid manure (2-8 percent)

  20. A manure applicator equipped with load cells D. Ess

  21. Flow sensing systems • Tyopically use electromagnetic flow meters. • Expensive • Handleliquids with a wide range and type of solids content • Measuing less than 0.5 percent • Not influenced by travel • Fange-mounted into transfer tubes on tanker applicators that sue slurry pumps

  22. Electromagnetic flow meter installed on a manure applicator D. Ess

  23. Conclusion • Manure management is important in precision farming • Manure management in precision is a relative concept • Manure management in precision farming become feasible as technologies develops such as GIS and GPS and other VRT technologies

  24. References: • http://mollisol.agry.purdue.edu/SSMC • http://clay.agr.okstate.edu/animalwaste • Animal waste utilization: Effective use of Manure as a Soil Resouce, Edited by Hatfiedld J.L &B.A.Stewart, Ann Arbor Press,1998 • http://res2.agr.ca/initiatives/manurenet/manurenet_en.html

  25. Question? ?

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