Het grondbewerkingsproefveld op de Oostwaardehoeve te Slootdorp
Rede. Wageningen, 29 maart 1962
The effects of nitrogen supply and growth period on yield and quality of herbage were studied. It was shown that internal nitrate content was a good measure of the nitrogen status of herbage. Maximum output from grassland could not be obtained if internal nitrate concentration in the herbage remained below about 100 mmol per kg dry matter. This fig...