References
- Bromfield , S. M. 1961 . Sheep faeces in relation to the phosphorus cycle under pastures . Australian journal of agricultural research , 12 : 111 – 123 .
- Bromfield , S. M. and Jones , O. L. 1970 . The effect of sheep on the recycling of phosphorus on hayed-off pastures . Australian journal of agricultural research , 21 : 699 – 711 .
- Bruce , J. L. 1976 . “ Soil map of part of Raglan County, South Auckland ” . In New Zealand Soil Bureau map 100
- Environmental Protection Agency . 1971 . Methods for chemical analysis of water and wastes , Washington DC : United States Government Printers Office . 312 p
- Gillingham , A. G. 1978 . Phosphorus cycling in grazed, steep hill country , Palmerston North, New Zealand : Massey University . PhD thesis
- Gillingham , A. G. 1980 . Phosphorus uptake and return in grazed, steep hill pastures. 1. Pasture production and dung and litter accumulation . New Zealand journal of agricultural research , 23 : 313 – 321 .
- Gillingham , A. G. , Syers , J. K. and Gregg , P. E. H. 1980 . Phosphorus uptake and return in grazed, steep hill pastures. II. Above-ground components of the phosphorus cycle . New Zealand journal of agricultural research , 23 : 323 – 330 .
- Murphy , J. and Riley , J. P. 1962 . A modified single solution method for the determination of phosphate in natural waters . Analytica chimica acta , 27 : 31 – 36 .
- Rixon , A. J. and Zorin , M. 1978 . Transformations of nitrogen and phosphorus in sheep faeces located in salt-bush rangeland and on irrigated pasture . Soil biology and biochemistry , 10 : 347 – 354 .
- Sharpley , A. N. and Syers , J. K. 1977 . Seasonal variation in casting activity and in the amounts and release to solution of phosphorus forms in earthworm casts . Soil biology and biochemistry , 9 : 227 – 231 .
- Walker , T. W. and Adams , A. F. R. 1958 . Studies on soil organic matter. I. Influence of P content of parent materials on accumulation of C, N, and S, and organic P in grassland soils . Soil science , 85 : 307 – 318 .
- White , E. 1960 . The distribution and subsequent disappearance of sheep dung on Pennine moorland . Journal of animal ecology , 29 : 243 – 350 .