References
- Adams , A. F. R. and Elphick , B. L. 1956 . The copper content of some soils and pasture species in Canterbury . N.Z. Journal of Science and Technology , A38 : 345 – 58 .
- Fleming , G. A. 1963 . Distribution of major and trace elements in some common pasture species . Journal of the Science of Food and Agriculture , 4 : 203 – 8 .
- Fleming , G. A. 1965 . Trace elements in plants with particular reference to pasture species . Outlook on Agriculture , 4 : 270 – 85 .
- Healy , W. B. 1968 . Ingestion of soil by dairy cows . N.Z. Journal of Agricultural Research , 11 : 487 – 99 .
- Hemingway , R. G. 1961 . Copper. modybdenum, manganese and iron contents of herbage as influenced by fertiliser treatments over a three-year period . Journal of the British Grassland Society , 17 : 182 – 7 .
- Hutton , J. T. and Norrish , K. 1977 . Plant analysis by X-ray spectrometry. II. Elements of atomic number greater than 20 . X-ray Spectrometry , 6 : 12 – 17 .
- McNaught , K. J. 1970 . Diagnosis of mineral deficiencies in grass-legume pastures by plant analysis . Proceedings of the International Grassland Congress , 11 : 334 – 8 .
- Metson , A. J. and Saunders , W. M. H. 1978a . Seasonal variations in chemical composition of pasture. I. Calcium, magnesium, potassium, sodium, and phosphorus . N.Z. Journal of Agricultural Research , 21 : 341 – 33 .
- Metson , A. J. and Saunders , W. M. H. 1978b . Seasonal variations in chemical composition of pasture. II. Nitrogen, sulphur, and soluble carbohydrate . N.Z. Journal of Agricultural Research , 21 : 355 – 64 .
- New Zealand Soil Bureau . 1968 . Soils of New Zealand. Part 3. Descriptions and analyses of Reference Soils . N.Z. Soil Bureau BuUetin , 26 (3)
- Nicholas , D. J. D. , Lloyd-Jones , C. P. and Fisher , D. J. 1956 . Some problems associated with determining iron in plant material . Nature, London , 177 : 336 – 7 .
- Nies , P. 1975 . A correction for soil contamination of herbage samples by dry ashing . N.Z. Journal of Agricultural Research , 18 : 69 – 71 .
- Norrish , K. and Hutton , J. T. 1977 . Plant analysis by X-ray spectrometry. I. Low atomic number elements, sodium to calcium . X-ray Spectrometry , 6 : 6 – 11 .
- Reay , P. F. and Marsh , B. 1976 . Element composition of ryegrass and red clover leaves during a growing season . N.Z. Journal of Agricultural Research , 19 : 469 – 72 .
- Reid , R. L. , Post , Amy and Jung , C. A. 1970 . Mineral composition of forages . West Virginia Agricultural Experiment Station Bulletin , 589T 35 pp
- Saunders , W. M. H. and Metson , A. J. 1971 . Seasonal variation of phosphorus in soil and pasture . N.Z. Journal of Agricultural Research , 14 : 307 – 28 .
- Wells , N. 1962a . Total copper in topsoils . N.Z. Soil Bureau Single Factor Maps , 41-2
- Wells , N. 1962b . Total manganese in topsoils . N.Z. Soil Bureau Single Factor Maps , 65-6
- Wells , N. 1968 . Element composition of soils and plants . N.Z. Soil Bureau Bulletin , 26 (2) : 115 – 31 .
- Wells , N. 1969a . Total titanium in topsoils . N.Z. Soil Bureau Single Factor Maps , 69-70
- Wells , N. 1969b . A reconnaissance of the element content of Wairarapa pastures and white clover plants . Proceedings of the N.Z. Grassland Association , 31 : 71 – 8 .