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Global positioning system (GPS)
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A key technology in precision farming. GPS is a network of government-controlled satellites used to help determine a radio receiver’s position in latitude, longitude and altitude.
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Remote Sensing
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A group of techniques for collecting detailed, high resolution information about crops and soils, typically from very long distances. Aerial photography or satellite images are the most common methods.
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Geographic information system (GIS)
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A system, usually computer-based, for the input, storage, retrieval, and display of geographic data: The GIS database typically contains layered information on land elevation, land use, land ownership, crop yield, soil nutrient levels and more.
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Instantaneous yield monitoring
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Measures and records harvest yields on-the-go, using sensors to track volume or weigh the crop. Many monitors also measure moisture content of grain. These provide data for site-specific yield maps.
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Site-specific crop management (SSCM)
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The use of variability in soil and crop parameters to decide the precise application of inputs, such as chemicals.
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Variable rate application (VRA)
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Adjusting the amount of inputs, such as seed, fertilizer, herbicide and pesticides, to match soil conditions within a field.
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Electroconductivity maps
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- Sensors measure electromagnetic conductivity within the top soil and a map is produced from those readings.
- down to one meter in accuracy
- detailing characteristics such as high salt levels, soil depth, differing layers of soil, water content and how well water is recharged into the soil.
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