katlynn weathers soil 4213 april 10, 2013. what is precision agriculture? what makes it so...
TRANSCRIPT
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Using Grid Soil Sampling w/Precision
Ag Technologies
Katlynn WeathersSoil 4213
April 10, 2013
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What is precision agriculture?
What makes it so special?
How can grid soil sampling help?
Introduction
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Purpose of Soil Sampling (Why)• Determine fertilizer and lime needs• Influence management decisions
* Too much fertilizer reduced nutrient use efficiency
* Not enough fertilizer will hurt yields
Introduction
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Previous management• Significantly altered soil nutrient levels• Confined livestock areas• Unknown management practices from previous
years• Desire for more information
Smaller fields merged into one
Consider Grid Sampling If…
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Types of Soil Sampling . . . . . .
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Composite / Random
Zone
Grid
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Sampling On a Grid
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Field Border
Grid Cell
Sample ID #
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Sampling w/ In A Grid
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Center of Grid
Sample points
W/ in Grid Cell
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Center of Grid
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Soil Test Results
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Soil Test P Potassium pH
Soil Test Maps
http://extension.missouri.edu/p/WQ450
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How will you use this information??? • Layering
Prices in Oklahoma• Flat rate per acre (Central OK)
$4.50 -$5.50• VRT per acre (Northern OK)
$6.00 - $8.00
What Happens Next???
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AdvantagesMore accurate
Layering of data
Nutrients
Has the potential to save money and increase yields*
Disadvantages Cost
Time
Not ideal for all locations
Specialized equipment
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Questions?????
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1. University of Missouri Extension http://extension.missouri.edu/p/WQ450
2. University of Nebraska Cooperative Extensionhttp://cropwatch.unl.edu/c/document_library/get_file?folderId=506359&name=DLFE-12661.pdf
3. West Virgina University Extension Servicehttp://www.wvu.edu/~agexten/forglvst/Precision_Statewide_Project.pdf
4. University of Nebraska-Lincoln http://cropwatch.unl.edu/web/ssm/soilsampling
5. Clemson Extension http://virtual.clemson.edu/groups/psapublishing/Pages/AGRO/IL63.pdf
Links for more Information