Illinois Soil Nitrogen Test measures microbial nitrogen

Contrary to the prevailing view, cereal crops derive the majority of their nitrogen from the soil, not fertilizer. Soils differ considerably in microbial activities that determine nitrogen-supplying power, and these differences must be taken into account if nitrogen fertilizers are to be used efficiently.

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<p><a href="http://www.physorg.com/news161256687.html">Illinois Soil Nitrogen Test measures microbial nitrogen</a></p> <p>Contrary to the prevailing view, cereal crops derive the majority of their nitrogen from the soil, not fertilizer. Soils differ considerably in microbial activities that determine nitrogen-supplying power, and these differences must be taken into account if nitrogen fertilizers are to be used efficiently.</p>