Giles discusses how and why he measures grass. By using a rising plate meter, he quantifies the grass in kilograms of dry matter per hectare. This is used to calculate grass growth rates for a national grass monitoring project – GrassCheck, see here https://grasscheckgb.co.uk/. He also discusses a program called AgriNet (https://www.agrinet.ie/Grass) which supports his management decisions such as whether he needs to shorten the rotation (i.e. reduce the rest period) in order to keep up with grass growth or lengthen the rotation (increase the rest period) to respond to slowing grass growth.
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