Effect of ammonium and nitrate on nitrogen fixation and mineral nutrition of ryegrass and uninoculated and inoculated clover grown separately and in association : A dissertation submitted in partial fulfilment of the requirements for the Degree of Bachelor of Agricultural Science (Honours) in the University of Canterbury

Abstract

The present investigation presents data on the growth and ionic composition of ryegrass (Lolium perenne L.), and uninoculated and inoculated white clover ( Trifolium repens L.) plants, grown in nutrient solutions containing either NH₄- or No₃-N. The effect of increasing nitrate concentrations on the growth and ionic composition of ryegrass, and the growth of both uninoculated and inoculated clover, was also studied. In addition, the growth and ionic composition of either uninoculated or inoculated clover grown in association with ryegrass was studied at one N level with either NH₄ or NO₃ as the N-source.