Grain growers can get much more from their fertiliser budgets by checking their soil phosphorus levels before sowing and more directly targeting crop inputs that are clearly nutrient-limited, according to recent results. Work by independent consultantAndrew Speirs during 2008 has shown that every dollar invested in nutrient analysis returned an additional 10.60 dollar. This confirms a 2001-2007 study in Victoria and New South Wales where Andrew and David Harbison found that applying an extra lOkilograms ofphosphorus to a deficient soil delivered an extra tonne of grain per hectare in an average year.
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机译：根据最近的结果，谷物种植者可以通过在播种前检查土壤磷水平，并直接针对明显受营养限制的作物投入，从肥料预算中获得更多收益。独立顾问安德鲁·斯派尔斯（Andrew Speirs）在2008年的工作表明，在营养物分析上投入的每一美元都可以额外获得10.60美元。这证实了2001-2007年在维多利亚州和新南威尔士州进行的一项研究，安德鲁和戴维·哈比森（Andrew and David Harbison）发现，在缺乏的土壤上施用额外的10千克磷，平均每公顷土地每年可增加一吨谷物。
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