An investigation in bags to study the effects of lime and N fertilizittion on the N uptake of Napier grass on peat is described. The natural reaction of peat was too acidic for healthy plant growth and N uptake which were poor whether or not fertilizer N was applied. Liming greatly improved dry matter production and also N uptake both from soil and fertilizer sources.The rate of N uptake depended on the rate of dry matter accumulation, the relationship being linear. The N content of grass,however, decreased exponentially with dry matter production. 

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