Australian Journal of Soil Research articles from January 2005

Australian Journal of Soil Research archives from January 2005

Changes in surface water quality after inundation of acid sulfate soils of different vegetation cover.
January 1, 2005... Introduction Large areas of acid sulfate soils (ASS) lay beneath Australia's eastern coastal floodplains (Naylor et al. 1995). Floodplain backswamps that contain ASS undergo regular inundation during wet seasons, and extensive drainage...

Total soil organic matter and its labile pools following mulga (Acacia aneura) clearing for pasture development and cropping 1. Total and labile carbon.
January 1, 2005... Introduction Communities dominated by mulga (Acacia aneura F. Muell. Ex. Benth.--an N-fixing tree legume) occur extensively in Queensland, New South Wales, South Australia, Western Australia, and Northern Territory, occupying a total of...

Carbon storage in the soils and vegetation of contrasting land uses in northern New South Wales, Australia.
January 1, 2005... Introduction The importance of organic matter to soil quality is widely recognised and is commonly viewed as a key to conserving healthy soils (Freebairn et al. 1990; Hulugalle and Entwistle 1997; Nortcliff 2002). However, interest in...

Simulated rainwater effects on anion exchange capacity and nitrate retention in Ferrosols.
January 1, 2005... Introduction Accumulations of nitrate (N[O.sub.3]) have been observed under sugarcane crops at depths >4m in Australia (Rasiah and Armour 2001; Rasiah et al. 2003; Donn et al. 2004) and >3 m in Brazil (Dynia 2000). These N[O.sub.3]...

The effect of ionic strength variation and anion competition on the development of nitrate accumulations in variable charge subsoils.
January 1, 2005... Introduction The leaching of excess N fertiliser applied to sugarcane in the Johnstone River catchment (JRC) has lead to the formation of substantial accumulations of nitrate (N[O.sub.3]; up to 1880 kg N[O.sub.3]-N/ha) generally...

Impact of tree clearing on soil pH and nutrient availability in grazing systems of central Queensland, Australia.
January 1, 2005... Introduction In Queensland, tree felling, commonly called tree clearing, gained momentum after the 1950s and continues at a high rate (577 000 ha/year during 1999-2001; Department of Natural Resources and Mines 2003). About 94% of the land...

Restricting the grazing time of cattle to decrease phosphorus, sediment and E. coli losses in overland flow from cropland.
January 1, 2005... Introduction The loss of phosphorus (P), E. coli, and suspended sediment (SS) from land to surface waters via overland flow is associated with impaired water quality (Nash and Halliwell 1999; Miller et al. 2004). Increased soil treading...

Some possible interconnections between shrinkage cracking and gilgai.(Short Communication)
January 1, 2005... Introduction A microrelief of heavy clay soils with a high shrink swell capacity in a horizontal or weakly inclined clay plain frequently consists of alternating microelevations (mounds), micro-depressions (depressions), and even sections...

Transport of bromide in the Bainsvlei soil: field experiment and deterministic/stochastic model simulation. I. continuous water application.
January 1, 2005... Introduction The rate at which agrochemicals move with percolating water from the soil surface to the groundwater is important in the management of agricultural lands and the subsurface of the earth. Although considerable progress has been...

Transport of bromide in the Bainsvlei soil: field experiment and deterministic/stochastic model simulation. II. Intermittent water application.
January 1, 2005... Introduction In practice, soils in the field always experience transient conditions due to the intermittent nature of evaporation, transpiration, rainfall, and irrigation. Tracer experiments are, nevertheless, usually carried out under...

Predicting water balance in a sandy soil: model sensitivity to the variability of measured saturated and near saturated hydraulic properties.
January 1, 2005... Introduction Physically based modelling of water flow in the unsaturated zone is usually based on Richards' equation (Mallants et al. 1998). The success of this approach relies on the availability of accurate data describing the relation...

Soil bulk density evaluation by conventional and nuclear methods.
January 1, 2005... Introduction Soil bulk density is traditionally used as an indicator of soil structure (Gantzer and Anderson 2002) and soil compaction (Martinez and Zinck 2004; Reichardt and Timm 2004). Soil structural degradation can be caused by traffic...