No Slide Title · Features of Adopters OAdopters tend to have… QSome college education and above...
Transcript of No Slide Title · Features of Adopters OAdopters tend to have… QSome college education and above...
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Precision Agriculture
Annual Desert Crop WorkshopDecember 4, 2002
Yuma Civic & Convention Center
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Barron J. OrrAssistant Professor & Geospatial Extension Specialist
520-626-8063
http://arsc.arid.arizona.edu/extension
Yu KudoFlorida Cooperative Extension
Trent TeegerstromUA Department of Agriculture and Resource Economics
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The “Precision Approach”
“Precision farming" refers to the use of an information and technology-based system for within-field management of crops. It basically means adding the right amount of treatment at the right time and the right location within a field. Susan Moran, USDA-ARS
Requires:
“Variable rate technologies” – devices that can be mounted on tractors and programmed to control the dispersion of water and chemicals based upon the information gained from the remote sensors.
“Site-specific technologies” – location specific tracking (GPS), mapping, (GIS), and sensing (including remote).
Photo by Keith Weller, courtesy of USDA-ARS
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Key Elements of Key Elements of Geospatial Technology:Geospatial Technology:
GPSGPSGISGIS
Remote SensingRemote Sensing
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What is GPS?
GPS = GPS =
Global Global Positioning Positioning
SystemSystem
A network of satellites that continuously transmit coded information – so we can precisely identify locations on earth by measuring distance from
those satellites.Photo from Ag Leader & Kansas State University
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What is GPS?
GPS = GPS =
Global Global Positioning Positioning
SystemSystem
A network of satellites that continuously transmit coded information – so we can precisely identify locations on earth by measuring distance from
those satellites.Photo from Ag Leader & Kansas State University
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A computer system for capturing, managing, integrating, manipulating, analyzing, and displaying data which is spatially referenced to the Earth. -- International GIS Dictionary
A decision support system involving the integration of spatially referenced data in a problem solving environment. -- Dr. David Cowen, University of South Carolina
What is a Geographic Information System (GIS)?
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An Example of a GIS: Calculating theAn Example of a GIS: Calculating theUniversal Soil Loss EquationUniversal Soil Loss Equation
P
C
S
L
K
RUSLE: USLE: A = RKLSCP
A
A = RKLSCP
AA = average annual soil loss in t/a (tons = average annual soil loss in t/a (tons per acre)per acre)
RR = rainfall erosivity index= rainfall erosivity indexKK = soil erodibility factor= soil erodibility factorLSLS = topographic factor= topographic factor
L = slope length & S = slopeL = slope length & S = slopeCC = cropping factor= cropping factorPP = conservation practice factor = conservation practice factor
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Earth Observation, Tele-detectionThis is the process of collecting, processing and analyzing data to extract information from the Earth’s surface without coming into physical contact with it
Satellite, Aircraft, ground-based dataOptical or Radiometric ImageryThermal ImageryPhotographsRadar Images, Laser ProfilesGround-based Sensors
Remote Sensing is a tool, not an end in itself
What is Remote Sensing?
Photos on the right are from Shwartz Electro Optics – the TS2 sensor system for orchards
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Eyes are our “remote sensors”
They detect visibleelectromagnetic energy
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Other sensors enable us to detect more than the eye can see
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Data Pre-Processing Mosaicking
Slide information provided by Shana Driscoll (Montana)
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A Role for Remote Sensing
Vegetation Density Water Deficit Crop Stress
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Soil survey mapsOne of the first applications of remote sensing.Often used by NRCS to define soil mapping units.Soil mapping units are appropriate for many applications; however, often lacks the resolution needed for precision crop management.
1 mile
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Spatially Interpolated Soil Maps
Left:
R= SandG= SiltB = Clay
Right:
Red=SLTan=SCLGrn=CL
Estimated Soil Texture(color levels correspond to %)
Transformed into a Map of Soil Texture Classes
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Classification Maps
Airborne SPOT LandSat Kriged
Red = SL, Tan = SCL, Green = CL
Interpolated Ground Samples
Soil Sample Locations: Spectral Data: ~60 Interpolated Ground Samples: 300
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Management Zones
Corn 32 cm high Corn 70 cm highThe patterns in the image from early season (left) are due to differences in soil type. The later image (right), these same
patterns are still present in the crop. Different soil types warrant different management practices.
Images from Walter Bausch – Colorado corn under a center pivot irrigation system.
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New Satellite Alternatives
IKONOS1 m panchromatic4 m multispectral
More regular coverageState considering a data buy
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Remote Sensing Data Sources
Microsoft TerraServerhttp://terraserver.homeadvisor.msn.com/default.aspx
EarthScan Image Networkhttp://www.earthscan.com/
Arizona Regional Image Archivehttp://aria.arizona.edu/
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Spatial Resolution and Cost
Cos
t of c
over
age
Cos
t of c
over
age
low
low
high
high
$$
finefinecoarsecoarse
ResolutionResolution
How much can you afford?
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Adoption of Precision AgJess Lowenberg-DeBoer of Purdue’s Site Specific Management Center
(http://mollisol.agry.purdue.edu/SSMC/)
Roughly 28,000 yield monitors in use in 1998 (18% of corn and soybean area)USDA research suggest 60% of U.S. farms using precision ag are in the corn beltIn a 1999 survey, Ohio researchers found that only 6% of all farmers use yield monitors, but over 50% of all farms with gross sales over $1 millionLarger farms more likely to adopt, but this peaks at 1600 acresFrom Fall 1999 to 2001, use of GPS guidance by custom applicators grew from 5% to 42% (with most growth in Midwest) (Whipker and Akridge, 2001).Leveling off? In 2001, 36% of all fertilizer retailers offered soil sampling with GPS, mostly 2.5 acre grids. It was 45% in 1999. 30% of all dealers offered variable rate application services in2001 compared to 38% in 1999.
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Features of Adopters in Arizona
“National Agricultural, Food, and Public Policy Preference Survey” by Farm Foundation (September 27, 2001)Farm Population AZ - 6,138*Survey Response AZ - 113 (Represents 1.8%)
*Farm population is taken from Farm Foundation, “The 2002 Farm Bill: U.S. Producer Preferences for Agricultural, Food, and Public Policy”.
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Technologies Adopted
Precision Agriculture*1 12Precision Irrigation*2 44Both 10Either 46
*1: Global Positioning Systems, Variable Rate Applications, and GPS-linked yield monitors*2: laser leveling, Drip Irrigation and Low-pressure sprinkler systems
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Features of AdoptersAdopters of precision technologies in Arizona tend to be…
45 years old and upLarge farmers* (some small farmers for irrigation)
Adopters tend to grow…WheatCottonForagesBeef cattleVegetables
*Large Farmers: Average Annual Gross Sales >= 100K*Small Farmers: Average Annual Gross Sales < 100K
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Features of AdoptersAdopters tend to have…
Some college education and above
Most adopters derive 76% or more of their income from AgricultureMost adopters own 76% or more of the land they farm or ranch
In the future, adopters would like their farm/ranch to be operated by their children
Others preferred someone outside of current operation or to convert the land to non-farm use
Adopters tend to be…1st or 2nd generation on the farm/ranch operation
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THANK YOU !!
Barron J. Orr
Assistant Professor & Geospatial Extension Specialist
520-626-8063
http://arsc.arid.arizona.edu/extension