A survey of soil physical properties on sheep and dairy farms in southern New Zealand
Open Access
- 1 June 2000
- journal article
- research article
- Published by Informa UK Limited in New Zealand Journal of Agricultural Research
- Vol. 43 (2), 251-258
- https://doi.org/10.1080/00288233.2000.9513425
Abstract
The study compared soil macroporosity, bulk density, air permeability, and hydraulic conductivity on 97 sheep and 87 dairy farm sites surveyed in Southland and South Otago, New Zealand. Soil physical properties of 4 soil groups (15 soils) were investigated. Soils on sheep farms surveyed had significantly greater air permeability than soils on dairy farms, averaged over 0–15 cm. Soils on sheep farms had significantly greater saturated hydraulic conductivity (86 mm h‐1 and 26 mm h‐1) than soils on dairy farms (32 mm h‐1and 10 mm h‐1), at 0–5 cm and 10–15 cm, respectively. Macroporosity decreased from 0–5 cm to 5–10 cm, at a significantly greater rate on dairy farms (by 3.6% v/v) than sheep farms (by 1.5% v/v). Bulk density increased between 0–5 cm and 5–10 cm by a greater amount for dairy farms (0.16 Mg m‐3) than for sheep farms (0.12 Mg m‐3). Macroporosity on some Fragic Pallic Soils was considered limiting for plant growth, while Firm Brown Soils were regarded as well structured and most likely to resist treading damage.Keywords
This publication has 15 references indexed in Scilit:
- Effects of cattle treading on physical properties of three soils used for dairy farming in the Waikato, North Island, New ZealandSoil Research, 1999
- Benchmark sites for assessing the chemical impacts of pastoral farming on loessial soils in southern New ZealandAgriculture, Ecosystems & Environment, 1997
- Structural vulnerability of New Zealand soilsSoil Research, 1997
- Cattle trampling and soil compaction on loamy sandsSoil Use and Management, 1991
- Amelioration of soil by natural processesSoil and Tillage Research, 1991
- Designs for Disc PermeametersSoil Science Society of America Journal, 1988
- Temporal variability of soil macroporosity in a fine sandy loam under mouldboard ploughing and direct drillingSoil and Tillage Research, 1988
- Factors affecting the susceptibility of 3 soils in the Manawatu to stock treadingNew Zealand Journal of Agricultural Research, 1984
- Changes in soil physical properties under grazed pasturesSoil Research, 1984
- Recovery of inter-block information when block sizes are unequalBiometrika, 1971