References
- Adams , S. N. , Honeysett , J. L. , Tiller , K. G. and Norrish , K. 1969 . Factors controlling the increase of cobalt in plants following the addition of a cobalt fertilizer . Australian Journal of Soil Research , 7 : 29 – 42 .
- Askew , H. O. and Dixon , J. K. 1937 . Influence of cobalt topdressing on the cobalt status of pasture plants . N.Z. Journal of Science and Technology , 18 : 688 – 693 .
- Baumgart , I. L. 1954 . Some ash showers of the central North Island . N.Z. Journal of Science and Technology , 35B : 456 – 467 .
- Binnie , D. B. and Thompson , K. F. 1973 . Feed Budgeting , Wellington , , New Zealand : Information Service, Ministry of Agriculture and Fisheries .
- Claridge , G. G. C. 1962 . Extractable iron in relation to soil classification . N.Z. Journal of Science , 5 : 269 – 278 .
- Cunningham , I. J. , Hogan , K. G. and Breen , J. N. 1956 . Copper and molybdenum contents of pastures grown on different soils of New Zealand . N.Z. Journal of Science and Technology , 38A : 225 – 238 .
- Dixon , J. K. and Kidson , E. B. 1940 . The influence of Southland limestones on the cobalt content of pasture at Morton Mains . N.Z. Journal of Science and Technology , 22 : 1A – 6A .
- During , C. 1972 . Fertilisers and Soils , Wellington , , New Zealand : Government Printer .
- During , C. , da Roza , R. and Martin , D. 1964 . A difficult pakihi-wasteland or farms? . Proceedings of 26th Conference N.Z. Grassland Association , : 62 – 67 .
- Forbes , E. A. , Posner , A. M. and Quirk , J. P. 1974 . The specific adsorption of inorganic Hg (11) species and Co (111) complex ions on goethite . Journal of Colloid and Interface Science , 49 : 403 – 409 .
- Grange , L. I. and Taylor , N. H. 1932 . Bush sickness . New Zealand DSIR Bulletin No. 32 ,
- Grimme , H. 1968 . Die Adsorption von Mn, Co, Cu and Zn durch Goethit aus verdiinnten Lösungen . Zeitschrift für Pflanzenernährung und Bodenkunde , 121 : 58 – 65 .
- Healy , W. B. 1968 . Ingestion of soil by dairy cows . N.Z. Journal of Agricultural Research , 11 : 487 – 499 .
- Jackman , R. H. 1964 . Accumulation of organic matter in some New Zealand soils under permanent pasture. I. Patterns of change of organic carbon, nitrogen, sulphur, and phosphorus . N.Z. Journal of Agricultural Research , 7 : 445 – 461 .
- Jones , G. B. and Belling , G. B. 1967 . The movement of copper, molybdenum, and selenium in soils as indicated by radio-active isotopes . Australian Journal of Agricultural Research , 18 : 733 – 740 .
- Jones , G. B. , Riceman , D. S. and McKenzie , J. O. 1957 . The movement of cobalt and zinc in soils as indicated by radio-active isotopes . Australian Journal of Agricultural Research , 8 : 190 – 201 .
- Joyce , J. P. and Rattray , P. V. 1970 . The intake and utilisation of milk and grass by lambs . Proceedings N.Z. Society Animal Production , 30 : 94 – 105 .
- Kidson , E. B. 1937 . Cobalt status of New Zealand soils . N.Z. Journal of Science and Technology , 18 : 694 – 707 .
- McNaught , K. J. 1938 . The cobalt content of North Island pastures . N.Z. Journal of Science and Technology , 20 : 14A – 30A .
- Rolt , W. F. 1962 . The copper nutrient status of some soils of the North Island, New Zealand . International Soil Science Conference, New Zealand , C19 : 3 – 7 .
- Simmons , W. J. 1973 . Determination of low concentrations of cobalt in plant material by atomic absorption spectrophotometry . Analytical Chemistry , 45 : 1947 – 1949 .
- Stanton , D. A. and Burger , R. du T. 1970 . Studies on zinc in selected Orange Free State soils . V. Agrochemophysica , 2 : 65 – 75 .
- Stevenson , F. J. and Ardakani , M. S. 1972 . “ Organic matter reactions involving micronutrients in soils ” . In Micronutrients in Agriculture , 79 – 114 . Madison, Wisconsin : American Agronomy Society, Inc. .
- Taylor , R. M. and McKenzie , R. M. 1966 . The association of trace elements with manganese minerals in Australian soils . Australian Journal of Soil Research , 4 : 29 – 39 .
- Underwood , E. J. 1971 . Trace Elements in Human and Animal Nutrition , New York : Academic Press .
- Walkley , A. and Black , I. A. 1944 . “ The determination of organic carbon: Walkley and Black's rapid titration method ” . In Soil and Plant Analysis , Edited by: Piper , C. S. 223 – 227 . The Waite Agricultural Research Institute, University of Adelaide . Monograph
- Wells , N. 1957 . Soil studies using sweet vernal to assess element availability. Part 3 — Copper in New Zealand soil sequences . N.Z. Journal of Science and Technology , 38B : 884 – 902 .
- Whitton , J. S. and Wells , N. 1974 . A pedochemical survey 2. zinc . N.Z. Journal of Science , 17 : 351 – 367 .