16 In Focus, Vol. 34, No 1, 2010 Rapid spectroscopic methods have be- come an integral part of agricultural analyses. For decades, the rapid and cost-effective assessment of feed quality using NIR has been an indispensible re- quirement for high productivity in animal husbandry. However, practical processes for targeted fertilisation and measurement of liquid farm manure collected for the purpose of recirculation in soil have not been pre

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