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Geographic distribution of samples for precision agriculture
In precision agriculture, soil samples may be geolocated using GPS technology in order to determine the geospatial distribution of nutrients in the sampled area. The geolocated samples are collected using a distribution and resolution that allows for the estimation of the geospatial variability of the soil area where the crop will be grown. Many different distributions and resolutions are used, depending upon the goals of the geospacial nutrient analysis and cost of sample collection and analysis. For example, in the United States corn and soybean growing regions a grid distribution with a resolution of 2.5 acres per grid (one sample for each 2.5 acre grid) is offered by many precision agriculture soil test service providers.