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WHAT IS “PRECISION AGRICULTURE” AND WHY IS IT IMPORTANT?




  • Large agricultural equipment is furnished with GPS systems, much like your car. The GPS aids in planting accurate rows of crops, as well as applying fertilizers. Photo credit: Ron Bolte
    Large agricultural equipment is furnished with GPS systems, much like your car. The GPS aids in planting accurate rows of crops, as well as applying fertilizers. Photo credit: Ron Bolte

    Precision agriculture is one of many modern farming practices that make production more efficient. With precision agriculture, farmers and soils work better, not harder.

    A better name for precision ag might be “site-specific ag”. Growers are able to take large fields and manage them as though they are a group of small fields. This reduces the misapplication of products and increases crop and farm efficiency.

    It has been said farmers were the first land stewards. They use research about weather patterns, soil temperature and humidity, growth, and other factors. They rotate crops to improve diversity, and monitor irrigation rates so that salts do not accumulate. They also use precision agriculture practices to apply nutrients, water, seed, and other agricultural inputs to grow more crops in a wide range of soil environments. Precision ag can help farmers know how much and when to apply these inputs.

    There is a lot of technology used to make modern agriculture more efficient. For example, some farmers use global positioning systems (GPS) and GPS-computer guided tractors and harvestors. Other geo-referenced site-specific practices may include:
    • electromagnetic soil mapping
    • soil sample collection
    • crop yield data collection
    • aerial imagery
    • crop or soil color index maps
    • soil types
    • soil characteristics
    • drainage level
    • potential yields

    Each of these geo-referenced data layers helps subdivide a large field area into smaller management zones. Using small management zones reduces waste while increasing production potential.

    One example of a precision agriculture practice is to evaluate the natural soil variability of a field. If the soil in one area holds water better, crops can be planted more densely and irrigation can be sparing. Or, if the plot is used for grazing, more cattle can graze than a similar area of poorer quality soil.

    By studying these factors and using precision agriculture, farmers are able to produce more food at a fraction of the cost. Farmers also conserve soil for sustainable food production. Precision ag results in a stable food supply, which results in a strong community.

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