References
- Agricultural Research Council . 1980 . The Nutrieni Requirements of Ruminant Lives-tock , 183 – 211 . Slough, , United Kingdom : Commonwealth Agricultural Bureaux, Farnham House, Farnham Royal .
- Anon Soil and plant analysis at Ruakura Bulletin of the Plant and Analytical Chemistry Group, Ruakura Soil and Plant Research Station Hamilton 1979 5 5
- Blood , D.C. , Henderson , J.A. and Radostitis , O.M. 1979 . Veterinary Medicine , 5th edn. , 906 – 910 . Philadelphia : Lea and Febiger .
- Buxton , D.A.L. 1982 . Dairy cattle condition scoring Aglink FPP498 , Wellington : Media Services, Ministry of Agriculture and Fisheries .
- Clark , R.G. 1974 . Phosphorus deficiency in cattle on two farms in Canterbury . N.Z. vet. J. , 22 : 14 – 16 .
- Conforth , I.S. and Sinclair , A.G. 1982 . Model for calculating maintenance phosphate requirements for grazed pastures . N.Z. J. exptl. Agric. , 10 : 53 – 61 .
- Georgievskii , V.I. , Annenkov , B.N. and Samokhin , V.I. 1982 . Mineral Nutrition of Animals , 147 – 158 . London : Butterworths .
- McNaught , K.J. 1959 . Effect of potassium fertilisers on sodium, magnesium and calcium in plant tissue . N.Z. J. Agric. , 99 : 442 – 442 .
- McNaught , K.J. and Karlovsky , J. 1964 . Sodium chloride responses in pasture on a potassium deficient soil . N. Z. J. Agric. Res. , 7 : 386 – 404 .
- Quin , B.F. 1982 . The quality of New Zealand superphosphate . N.Z. agricultural Science , 16 : 93 – 100 .
- Reid , R.L. 1980 . “ Relationship between phosphorus nutrition of plants and the phosphorus nutrition of animals and man ” . In The role of Phosphorus in Agriculture , Edited by: Khasawach , F.E. , Sample , E.C. and Kamprath , E.J. 847 – 886 . Madison : American Society of Agronomy . In
- Sanders , W.M.H. 1965 . Phosphate retention by New Zealand soils and its relationship to free sesquioxides, organic matter and other soil properties . N.Z.J. agric. Res. , 5 : 30 – 57 .
- Simesen , M.G. 1980 . “ Calcium, phosphorus and magnesium metabolism ” . In Clinical Biochemistry of Domestic Animals , 3 edn , Edited by: Kaneko , J.J. 575 – 635 . New York : Academic Press . In
- Smith , G.S. 1977 . “ Sodium relations in pasture and fodder plants grown in New Zealand ” . In D. Phil. Thesis , New Zealand : University of Waikato .
- Smith , G.S. and Cornforth , I.S. 1982 . Concentrations of nitrogen, phosphorus, sulphur, magnesium and calcium in North Island pastures in relation to plant and animal nutrition . N.Z. J. agric. Res. , 25 : 373 – 387 .
- Smith , G.S. and Middleton , K.R. 1978 . Sodium and potassium content of topdressed pastures in New Zealand in relation to plant and animal nutrition . N.Z. J. exptl. Agric. , 6 : 217 – 225 .
- Webster , W.M. 1932 . Bovine sterility in New Zealand . Aust. vet. J. , 8 : 199 – 222 .