Soil physical quality under cattle grazing of a winter-fed brassica crop
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This 2-year study investigated the effects of winter brassica forage crop grazing treatments on soil physical properties on a Fragic Pallic soil, susceptible to compaction, in South Otago, New Zealand. Soil physical measurements including bulk density, percentage of pores >300 μm, macroporosity (air-filled porosity; percentage of pores >30 μm), total porosity, air permeability, and saturated hydraulic conductivity (K sat) were taken 1.5 and 4 months after completion of winter grazing in year 1,...[Show more]
dc.contributor.author | Drewry, John | |
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dc.contributor.author | Paton, R J | |
dc.date.accessioned | 2015-12-13T23:04:08Z | |
dc.date.available | 2015-12-13T23:04:08Z | |
dc.identifier.issn | 0004-9573 | |
dc.identifier.uri | http://hdl.handle.net/1885/85236 | |
dc.description.abstract | This 2-year study investigated the effects of winter brassica forage crop grazing treatments on soil physical properties on a Fragic Pallic soil, susceptible to compaction, in South Otago, New Zealand. Soil physical measurements including bulk density, percentage of pores >300 μm, macroporosity (air-filled porosity; percentage of pores >30 μm), total porosity, air permeability, and saturated hydraulic conductivity (K sat) were taken 1.5 and 4 months after completion of winter grazing in year 1, and 2.5 months after grazing in year 2. Treatment main effects in year 1 for macroporosity were ungrazed crop (P < 0.05, 15.5%), established pasture (12.2%), crop on-off grazing (12.8%), crop grazed with back fence (9.6%), and current practice (strip grazing without a back-fence, 8.6%). During both winters the soil was generally more compact at 0.05-0.10 m depth than at 0.15-0.20 m, particularly for the current practice treatment, which may increase the risk of overland flow. Micro-topography differences between hump and hoof-hollow areas for the current practice treatment were also investigated during one sampling, with very low values of Ksat at 0-0.05 m in hoof-hollow areas (P < 0.05, 5 mm/h), compared with hump areas (129 mm/h). Overall, the crop on-off grazing treatment and, with some exceptions, the grazed with back fence treatment have some merit for reducing damage to soil physical properties compared with current practice. | |
dc.publisher | CSIRO Publishing | |
dc.source | Australian Journal of Soil Research | |
dc.subject | Keywords: Crops; Hydraulic conductivity; Microporosity; Surface topography; Pugging; Susceptible; Trading; Winter brassica forage crops; Soils; grazing; physical property; soil quality; Bulk Density; Conductivity; Porosity; Soil; Topography; Australasia; Eastern He Hydraulic conductivity; Pugging; Soil compaction; Treading | |
dc.title | Soil physical quality under cattle grazing of a winter-fed brassica crop | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.description.refereed | Yes | |
local.identifier.citationvolume | 43 | |
dc.date.issued | 2005 | |
local.identifier.absfor | 050302 - Land Capability and Soil Degradation | |
local.identifier.ariespublication | MigratedxPub13529 | |
local.type.status | Published Version | |
local.contributor.affiliation | Drewry, John, College of Medicine, Biology and Environment, ANU | |
local.contributor.affiliation | Paton, R J, AgResearch | |
local.bibliographicCitation.startpage | 525 | |
local.bibliographicCitation.lastpage | 531 | |
local.identifier.doi | 10.1071/SR04122 | |
dc.date.updated | 2015-12-12T07:53:43Z | |
local.identifier.scopusID | 2-s2.0-23744462887 | |
Collections | ANU Research Publications |
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