Browsing by Supervisor "Wilson, A.T."

Now showing items 1-2 of 2

  • A study of some aspects of the nitrogen economy of New Zealand grassland soils

    Steele, K.W. (The University of Waikato, 1977)
    Nitrogen deficiency is widespread and is a major limitation to grassland productivity in New Zealand, indicating inadequate nitrogen supply, losses from the nitrogen cycle, or a combination of both. The intensive grassland ...
  • Some amorphous constituents of New Zealand soils

    Milestone, Neil Brennan (The University of Waikato, 1973)
    Part 1 – Allophanes derived from volcanic ash Soils formed on weathered volcanic ash in the central and northern North Island of New Zealand contain the amorphous aluminosilicate allophane as the predominant clay mineral ...