References
- N.Z. Soil Bureau . 1968 . “ General survey of the soils of South Island, New Zealand ” . In N.Z. Soil Bureau Bulletin Vol. 27 , 404 pp.
- O'Connor , K. F. , Vartha , E. W. , Becher , R. A. and Coulter , J. D. Seasonal and annual variation in pasture production in Canterbury and North Otago . Proceedings N.Z. Grassland Association . Vol. 30 , pp. 50 – 63 .
- Radcliffe , J. E. 1974 . Seasonal distribution of pasture production in New Zealand. 1. Methods of measurement . N.Z. Journal of Experimental Agriculture , 2 : 337 – 340 .
- Rickard , D. S. Climate, pasture production and irrigation . Proceedings N.Z. Grassland Association . Vol. 30 , pp. 81 – 93 .
- Rickard , D. S. 1972a . “ Meteorological data 1950–1970 ” . In Winchmore Irrigation Research Station Technical Report 4 33 pp.
- Rickard , D. S. 1972b . “ Investigations into the response of pasture to irrigation, 1950–57 ” . In Winchmore Irrigation Research Station Technical Report 4 Vol. 5 , 26 pp.
- Rickard , D. S. and Fitzgerald , P. D. 1969 . The estimation and occurrence of agricultural drought . Journal of Hydrology (N.Z.) , 7 : 11 – 16 .
- Rickard , D. S. and Fitzgerald , P. D. The effect of soil moisture and irrigation on pasture production in Canterbury, New Zealand . Proceedings of the XI International Grasslands Congress . pp. 487 – 492 .
- Rickard , D. S. and Fitzgerald , P. D. Soil moisture and pasture growth in Canterbury . Proceedings 6th N.Z. Geography Conference . pp. 201 – 208 .