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Management Zones. Starr Holtz SOIL 4213 April 26, 2006. "Management zones are regions of a farm field that have been differentiated from the rest of the field for the purpose of receiving individual management attention." .

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Management zones l.jpg

Management Zones

Starr Holtz

SOIL 4213

April 26, 2006


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"Management zones are regions of a farm field that have been differentiated from the rest of the field for the purpose of receiving individual management attention."


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http://www.pmcnet.com/id42.htm


Justification for delineating zones l.jpg
Justification for delineating zones field is managed.

  • Spatial variability

    • Soil properties

      • Soil texture

      • % Organic Matter

      • Water holding capacity

      • Nutrient levels

      • pH

    • Effects of past management


Creating management zones l.jpg
Creating Management Zones field is managed.

The natural variability of a specific field will determine the number of distinct zones.

  • “Satellite-Derived Management Zones" (SAMZ)

    • aerial photography is used to take an image of the field

    • a computer program is used to delineate zones

    • no soil sampling required

http://www.pmcnet.com/id42.htm


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Creating Management Zones field is managed.

  • Digital Elevation Models (DEMs) in a Geographical Information System (GIS).

    • zones are created according to DEMs using GIS

    • no soil sampling required

http://usgsquads.com/


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Creating Management Zones field is managed.

  • Site-Specific Basis

    • must include all the factors that affect management on a farm

    • utilizes all information available

    • the characteristics of a zone may not only depend on the physical field characteristics and the application equipment characteristics, but also the pattern in which the application equipment traverses the field

    • the minimum size of a zone is limited by the ability of the farmer to differentially manage regions within a field


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Tools used to delineate zones field is managed.

  • Bare soil aerial imagery

    • before rain

    • after rain

  • Topographic maps

  • Vegetation aerial imagery

    • early season

    • mid season

    • late-season

  • Soil surveys

  • Field boundaries

  • Maps of any field

    anomalies

  • Yield maps

  • GIS

http://extension.missouri.edu


Tools con t l.jpg
Tools Con’t field is managed.

  • Soil test results

  • Pest scouting reports

  • Tile drain information

  • Zone size estimation

    • minimum zone size

    • No real maximum size

  • Field history information:

    • position of old roads, houses, etc.

    • maps of earthworks, cut and fill operations

    • areas of past differential fertilization

    • extent of irrigation (center pivot corners)

    • position of old field divisions, fence lines

    • position of old wetlands, or tree stands

http://www.soiltesting.okstate.edu/


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1939 field is managed.

http://extension.missouri.edu


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1956 field is managed.

http://extension.missouri.edu


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1968 field is managed.

http://extension.missouri.edu


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1982 field is managed.

http://extension.missouri.edu


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1990 field is managed.

http://extension.missouri.edu


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pH field is managed.

http://extension.missouri.edu


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Conclusions field is managed.

  • Zone sampling results in lower sampling costs

  • Improves profitability and environmental protection

  • Manage in-field variability


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Sources field is managed.

  • http://nespal.cpes.peachnet.edu/pa/home/main.asp?targetDir=2

  • http://www.nue.okstate.edu/

  • http://extension.missouri.edu

  • http://www.apfo.usda.gov/

  • Qamar-uz-Zaman and A.W. Schumann. 2006. Nutrient ManagementZones for Citrus Based on Variation in Soil Properties and Tree Performance. Precision agriculture. 7:1:45-63.

  • http://www.ppi-ar.org/ppiweb/ppibase.nsf/$webindex/article=772BE73B8525695A005A12E99F5E03CD

  • http://www.findarticles.com/

  • Mzuku, M., F. Smith, L. MacDonald, D. Inman, R. Khosla, and R. Reich. 2005. Soil Science Society of America. 69:5:1572-1579.

  • http://notesmi.altarum.org/Conf/2ndag.nsf/0/c0be843cd3a1a061852567d700665251?OpenDocument

  • http://www.pmcnet.com/id42.htm

  • http://usgsquads.com/

  • http://www.soiltesting.okstate.edu/


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Questions?? field is managed.

“By knowledge of appropriate management zones less dynamic areas can be treated as homogenous units”