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NEB-KAN PRECISION AGRICULTURE
Farming with the aid of computerized mapping and satellites is no longer
a pie-in-the-sky notion. The technology is rapidly becoming commercially available and
affordable for an increasing number of producers. It's known a precision farming, and like
the gasoline-powered tractor and hybrid seeds, it will change the way you farm.
Precision farming is, in its simplest sense, a management system for
crop production that uses site specific data to maximize yields and more efficiently use
inputs.
The technology is quickly gaining acceptance and used by producers, farm
suppliers, crop consultants, and custom applicators.
Precision farming links the data-management abilities of computers with
sophisticated farm equipment that can vary application rates and monitor yields throughout
the field.
Site-Specific Agriculture
Site-specific agriculture involves collecting and managing information
to make practical, economical and environmentally sound crop production decisions. It
embodies the practice of applying crop inputs in each part of a field according to its
unique set of conditions, using computer controlled variable rate and blend application
equipment, GPS satellite navigation, GIS field mapping and data analysis. This practice
allows growers to manage field variability while improving profitability in a manner that
is environmentally responsible.
Principle of Limiting Factors
The level of crop production can be no greater than that allowed by the
most limiting of the essential plant growth factors.
Six Essential Plant Growth Factors
- Nutrients
- Mechanical Support (rooting)
- Air
- Water
- Light
- Heat
Plant growth is dependent on a favorable combination of these factors.
If one is out of balance with the others, plant growth can be reduced or even prevented.
The factor that is least optimum will determine the maximum level of crop production.
The tub of corn illustrates the principle of limiting factors. The
potential for the greatest yield is achieved when all the staves balance at the top. In
this example, several crop growth factors are limiting, with nitrogen being the most
limiting. If we apply nitrogen (increase the height of the wood stave) ignoring the other
limiting crop growth variables, the yield improvement will only be as great as allowed by
the next most limiting factors.
Precision Farm Links
<Http://precision.agri.umn.edu/>
- Precision Agriculture Center Online
<Http://www.esri.com> -
Environmental Systems Research Institute, Inc.
<Http://www.fse.missouri.edu/mpac/index.htm> -
Missouri Precision Agriculture Center
<Http://www.montana.edu/places>
- Precision Land And Climate Evaluation Systems
<Http://www.farmresearch.com/SSMG> -
Site Specific Management Guidelines
<Http://www.ppi-far.org>
- Potash and Phosphate Institute (PPI)
<Http://www.umac.org>
- Upper Midwest Aerospace Consortium
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