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The measurement of symbiotic nitrogen fixation in established pastures and some aspects of the nitrogen cycle in a sequence of pastures of increasing age
(Lincoln College, University of Canterbury, 1976)
The acetylene reduction (A.R.) assay was investigated for quantitative measurement of symbiotic nitrogen fixation in established legume-based pastures, under field conditions. It was found that the rate of ethylene ...
Nitrogen fixation by Ulex europaeus (gorse) and Cytisus scoparius (broom)
(Lincoln College, University of Canterbury, 1973)
A series of glasshouse and laboratory experiments was carried out to enable comparison of two woody perennial legumes, gorse and broom, with other legumes, nodulated non-legumes and other biological nitrogen fixing ...
Nitrogen nutrition of mycorrhizal pines
(Lincoln College, University of Canterbury, 1972)
Nitrogen has been central to many of these speculations regarding the function of mycorrhizas in tree nutrition and growth. Historically it was felt that mycorrhizas were more efficient in absorbing nitrogen from humus ...