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Mineral nitrogen regimes in soils of natural and modified snow tussock grasslands of Canterbury and Otago, New Zealand
(Lincoln College, University of Canterbury, 1983)
Mineral nitrogen (N) levels in natural grasslands of the world fluctuate in response to a range of environmental influences but are generally low with ammonium (NH₄-N) levels usually below 10 µg g⁻¹ soil and nitrate (NO₃-N) ...
Nitrogen fixation in peas (Pisum sativum)
(Lincoln College, University of Canterbury, 1983)
Field experiments were conducted at Lincoln College, Canterbury, from 1979-81 to assess the effect of peas (pisum sativum) on subsequent crops and evaluate factors influencing their N-fixing activity.
In two trials, ...
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 ...
Components of grain yield in wheat : a thesis submitted for the degree of Doctor of Philosophy in the University of Canterbury [Lincoln College], New Zealand
(Lincoln College, University of Canterbury, 1977)
Between 1972 and 1976 a series of field experiments were conducted to investigate the factors limiting grain yield in
wheat (Triticum aestivum L). Spike population restricted yield
when it was below about 500 spikes/m² ...
Fate of urine nitrogen applied to peat and mineral soils from grazed pastures
(Lincoln University, 1994)
This study has provided fundamental information on the fate of urine nitrogen (N)
when applied to pasture soils. In this work the three pasture soils used were a
Bruntwood silt loam (BW), an old well-developed (lime and ...
Components of grain yield and total nonstructural carbohydrates in wheat : a thesis submitted for the degree of Doctor of Philosophy in the University of Canterbury [Lincoln College]
(Lincoln College, University of Canterbury, 1985)
Responses of autumn-sown wheat crops to various agronomic inputs were investigated in three field experiments over two seasons, and the causes of yield variation were analysed by simultaneous carbohydrate measurements in ...
The effect of water stress, nitrogen and gibberellic acid on the phytotoxicity of post-emergent herbicides to Avena spp.
(Lincoln University, 1990)
A series of experiments was carried out on cultivated oat (Avena sativa L. cv Amuri) to
examine the efficacies of fluazifop-butyl and glyphosate against water stressed plants,
plants grown in low and high nitrogen and ...
Environmental control of tillering and yield of wheat
(Lincoln College, University of Canterbury, 1985)
Four experiments were conducted in controlled and field environments from 1982 to 1984 to establish relationships between dry matter growth rate and tillering, yield components and grain yield of wheat.
In the first ...
Extractable soil nitrogen following clear-cutting and burning in a beech forest
(Soil Science Society of America, 1985-11)
Nitrogen (N) mineralization was monitored in the humus layer and soil in an undisturbed and harvested beech (Nothofagus) spp. forest in the West Coast of the South Island of New Zealand. To assess the effects of different ...
Response surfaces of growth and yield of wheat
(Lincoln College, University of Canterbury, 1979)
In the 1976-77 and 1977-78 seasons four field experiments using a three factor central composite second order design in incomplete blocks were conducted to quantify the responses of autumn-sown wheats established at five ...