The results from alternative spatial nitrogen application studies are analysed in economic terms and compared to the costs of precision farming hardware, software and other services for cereal crops in the UK. At current prices, the benefits of variable rate application of nitrogen exceed the returns from a uniform application by an average of pound22 ha(-1) The cost of the precision farming systems range from pound5 to pound18 ha(-1) depending upon the system chosen for an area of 250 ha. The benefits outweigh the associated costs for cereal farms in excess of 80 ha for the lowest price system to 200-300 ha for the more sophisticated systems. The scale of benefits obtained depends upon the magnitude of the response to the treatment and the proportion of the field that will respond. To be cost effective, a farmed area of 250 ha of cereals, where 30% of the area will respond to variable treatment, requires an increase in crop yield in the responsive areas of between 0.25 and 1.00 t ha(-1) (at pound65 t(-1)) for the basic and most expensive precision farming systems, respectively.
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机译：从替代的空间氮肥应用研究中获得的结果从经济角度进行了分析，并与英国谷物农作物的精密农业硬件，软件和其他服务的成本进行了比较。以当前价格计算，可变速率施用氮的好处比均匀施用的收益平均多了22英镑（-1）磅，根据系统的不同，精密耕作系统的成本从5英镑到18英镑（-1）不等。选择面积为250公顷。对于最低价格的系统，收益超过谷物农场的相关成本超过80公顷，而对于更复杂的系统，收益超过200-300公顷。所获得收益的规模取决于对治疗的反应程度以及将做出反应的领域的比例。为了达到成本效益，要种植250公顷谷物的耕地，其中30％的地区将对不同的处理方式做出反应，因此需要在响应区域将作物产量提高0.25至1.00 t ha（-1）（65磅/磅）。 t（-1））分别用于基本和最昂贵的精确耕作系统。
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