References
- Barrow , N.J. 1987 . “ Return of nutrients by animals ” . In Ecosystems of the World , Managed Grasslands Analytical Studies Edited by: Snaydon , R.W. Vol. 17B , 181 – 186 . Amsterdam , , The Netherlands : Elsevier .
- Barrow , N.J. and Lambourne , R.D. 1969 . A method for the determination of sulphur in some biological materials . Analyst , 95 : 98 – 102 .
- Bird , P.R. and Fountain , R.D. 1970 . A method for the determination of sulphur in some biological materials . Analyst , 95 : 98 – 102 .
- Boswell , C.C. 1983 . An assessment of phosphorus and sulphur interactions on aspects of the sulphur cycle in pasture , Australia : University of New England . Ph.D. Thesis
- Devaud , E. 1977 . The Sulphur cycle in grazed irrigated lucerne , Australia : University of New South Wales . Ph.D. Thesis
- Doyle , P.T. and Moir , R.J. 1979 . Sulphur and methionine metabolism in sheep. III. Excretion and retention of dietary and supplemented sulphur, and production responses to intraruminal infusions of DL‐methionine . Aust. J. Agric. Res. , 30 : 1185 – 1196 .
- Freney , J.R. , Melville , G.E. and Williams , C.H. 1969 . Extraction, chemical nature and properties of soil organic sulphur . J. Sci. Food Agric. , 20 : 440 – 445 .
- Ghani , A. , McLaren , R.G. and Swift , R.S. 1991 . Sulphur mineralisation in some New Zealand soils . Biol. Fertil. Soils , 11 : 68 – 74 .
- Johnson , C. M. and Nishita , H. 1952 . Microestimation of sulphur in plant materials, soils and irrigation waters . Anal. Chem. , 24 : 736 – 742 .
- Kennedy , P.M. and Siebert , B.D. 1973 . The utilisation of spear grass (Heteropogon contortus). III. The influence of the level of dietary sulphur on the utilisation of spear grass by sheep . Aust. J. Agric. Res. , 24 : 143 – 152 .
- Kennedy , A.P. and Till , A.R. 1981 . The distribution in soil and plant of 35S from sheep excreta . Aust. J. Agric. Res. , 32 : 339 – 351 .
- Lee , R. , Blakemore , L.C. , Gibson , E.J. and Daly , B.K. 1981 . Effect of extraction time and charcoal treatment on the adsorbed sulphate values of several New Zealand topsoils . Commun. Soil Sci. Plant Anal. , 12 : 1195 – 1206 .
- Metson , A.J. 1979 . Sulphur in New Zealand soils. I. A review of sulphur in soils with particular reference to adsorbed sulphate‐sulphur . NZ J. Agric. Res. , 22 : 95 – 114 .
- Nguyen , M.L. 1990 . Sulphur cycling in soil‐plant‐animal systems under grazed, irrigated pastures in Canterbury, New Zealand and its implication on pasture sulphur requirements , New Zealand : Lincoln University . Ph.D. Thesis
- Nguyen , M.L. and Goh , K.M. 1991 . “ Applicability of the MAF soil sulphate ‘Quick test’ for predicting immediate pasture sulphur requirements ” . In Proceedings of Soil and Plant Testing for Nutrient Deficiencies and Toxicities, February 21–22, 1991 , Occasional Report No. 5 Edited by: White , R.E. and Currie , L.D. 280 – 293 . Palmerston North , , New Zealand : Fertiliser and Lime Research Centre . Massey University
- Nguyen , M.L. and Goh , K.M. 1992a . Nutrient cycling and losses based on a mass‐balance model in grazed pastures receiving long‐term superphosphate applications in New Zealand. 2. Sulphur . J. Agric. Sci. (Camb.) , 119 : 107 – 122 .
- Nguyen , M.L. and Goh , K.M. 1992b . Status and distribution of soil sulphur fractions, total nitrogen and organic carbon in camp and non‐camp soils of grazed pastures supplied with long‐term superphosphate . Biol. Fertil. Soils , 14 (In press)
- Nguyen , M.L. and Goh , K.M. 1992c . Sulphur mineralisation and release of soluble soil organic sulphur from camp and non‐camp soils of grazed pastures receiving long‐term superphosphate applications . Biol. Fertil. Soils , 14 (In press)
- Steingergs , A. , Iismaa , O. , Freney , J.R. and Barrow , N.J. 1962 . Determination of total sulphur in soil and plant material . Anal. Chim. Acta , 27 : 158 – 164 .