Recently added articles from Australian Journal of Soil Research:
Effect of season and landscape position on the aluminium geochemistry of tropical acid sulfate soil leachate.(Report)
Mar 01, 2009; ... Introduction In Australia, acid sulfate soils (ASS) occupy an estimated 5.8 x [10.sup.6] ha, 4.1 x [10.sup.6] ha of which is exposed at some point during the tidal cycle (Fitzpatrick et al. 2008). These ASS underlie coastal estuaries and floodplains near which the majority of ...
Distribution of carbon, nitrogen, phosphorus, and sulfur in the soil in a multiple habitat system in India.(Report)
Mar 01, 2009; ... Introduction Soils are considered highly heterogeneous in both space and time, and this heterogeneity has strong consequences on plant performance and on ecosystem function (Huber-Sannwald and Jackson 2001). Spatial studies of soil help to describe soil properties of a ...
Effect of cotton-cowpea intercropping on C and N mineralisation patterns of residue mixtures and soil.(Report)
Mar 01, 2009; ... Introduction Intercropping results in residues of different crops and of different quality becoming mixed so that they decompose simultaneously within the same soil volume (Sakala et al. 2000). Interactions between these different residues during decomposition is usually complex ...
Soil respiration and [N.sub.2]O emission in croplands under different ploughing practices: a case study in south-east China.(nitrous oxide)(Report)
Mar 01, 2009; ... Introduction Second to gross photosynthesis, carbon dioxide (C[O.sub.2]) emissions from soils (i.e. soil respiration) exceed all other terrestrial-atmospheric carbon exchanges (Raich and Schlesinger 1992). Increases in soil C[O.sub.2] emissions have the potential to exacerbate ...
Statistical patterns of carbonates and total organic carbon on soils of Tuber rufum and T. melanosporum (black truffle) brules.(Report)
Mar 01, 2009; ... Introduction The properties of carbonated soils limit the development of many mycorrhizal mushrooms. Truffles (Tuber Micheli ex Wiggers) are nevertheless an exception to this rule, since the calcareous and well drained soils of Mediterranean forests afford the required habitat ...
Organic acid mediated nutrient extraction efficiency in three calcareous soils.(Report)
Mar 01, 2009; ... Introduction The secretion of organic acids by plant roots is now regarded as one of the common mechanisms involved in solubilising relatively insoluble soil nutrients (Jones et al. 1994). One of the effects linked to nutrition that organic acids have in root exudates is the ...
Management practices for control of runoff losses from cotton furrows under storm rainfall. III. Cover and wheel traffic effects on nutrients (N and P) in runoff from a black Vertosol.(Report)
Mar 01, 2009; ... Introduction Cotton (Gossypium hirsutum L.) was grown on some 550 000 ha in inland New South Wales and Queensland in 1998-99, with 82% of the area irrigated, predominantly by flood irrigation in furrows (Cotton Yearbook 1999). Given the high levels of fertiliser use in cotton ...
Soil indicators and their use by farmers in the Billabong catchment, southern New South Wales.(Report)
Mar 01, 2009; ... Introduction Earth's ecosystems depend on functional soil. Soil is critical for decomposition and nutrient cycling, which in turn sustains plant and animal productivity, supports biodiversity, enhances air quality, and maintains water quality (Torsvik et al. 1990; Doran 2002; ...
Preface: nutrient management by the Australian grains industry.(Report)
Feb 01, 2009; ... The contributions to this special. edition of the Australian Journal of Soil Research report recent research undertaken as part of a Nutrient Management Initiative established by the Grains Research and Development Corporation (GRDC). The Corporation is a statutory authority established to ...
Key crop nutrient management issues in the Western Australia grains industry: a review.(Report)
Feb 01, 2009; ... Introduction Fertiliser costs represent a significant part of the variable costs of growing grain crops in the Mediterranean-type environment of Western Australia (WA). For example, the State average expenditure on fertilisers (S/crop ha) from the BankWest benchmarks increased ...
The effectiveness of deep placement of fertilisers is determined by crop species and edaphic conditions in Mediterranean-type environments: a review.(Report)
Feb 01, 2009; ... Introduction In modern agriculture, vertical stratification of soil nutrients is thought to be widespread as a result of the increased adoption of minimum- or no-till farming systems, which minimise or practically eliminate soil mixing, and the shallow application of fertilisers ...
Tillage system affects phosphorus form and depth distribution in three contrasting Victorian soils.(Report)
Feb 01, 2009; ... Introduction Tillage and crop rotations can significantly influence the productivity and sustainability of modern farming systems. Tillage has been shown to affect the physical and biological processes in soils such as water conservation, microbial activity, and earthworm ...
Effects of tillage practices on soil and water phosphorus and nitrogen fractions in a Chromosol at Rutherglen in Victoria, Australia.(Report)
Feb 01, 2009; ... Introduction Excessive nutrient concentrations are a major problem for many of the streams draining agricultural catchments in Australia. In the south-eastern State of Victoria, the grains industry is one of many potential contributors to the excessive phosphorus (P) and ...
Fate of potassium fertilisers applied to clay soils under rainfed grain cropping in south-east Queensland, Australia.(Report)
Feb 01, 2009; ... Introduction Potassium (K) is a nutrient required in large quantities by crop plants, with only nitrogen found in greater concentrations in plant biomass (Syers 1998). However, K fertiliser inputs in Australian cropping systems have generally been low relative to other ...
Identifying fertiliser management strategies to maximise nitrogen and phosphorus acquisition by wheat in two contrasting soils from Victoria, Australia.(Report)
Feb 01, 2009; ... Introduction Nitrogen (N) and phosphorus (P) fertilisers are a key component of dryland grain production systems in southern Australia, where many soils are inherently low in fertility (Perry 1992). Fertiliser is the single largest variable cost for dryland grain production in ...
Wheat roots proliferate in response to nitrogen and phosphorus fertilisers in Sodosol and Vertosol soils of south-eastern Australia.(Report)
Feb 01, 2009; ... Introduction Root systems are of fundamental importance to crop productivity because they acquire the water and nutrients that support shoot growth. Unfortunately, root systems and root function are difficult to study in the natural soil environment, primarily because such ...
Plant availability of phosphorus from fluid fertiliser is maintained under soil moisture deficit in non-calcareous soils of south-eastern Australia.(Report)
Feb 01, 2009; ... Introduction Fluid mono-ammonium phosphate (MAP) fertiliser has gained commercial acceptance in North America and Europe and is now being considered for grain crops in south-eastern Australia. Previous research has generally shown an equivalent or improved availability of ...
Quantifying the benefits of accounting for yield potential in spatially and seasonally responsive nutrient management in a Mediterranean climate.(Report)
Feb 01, 2009; ... Introduction With the current cost-price squeeze in the Australian grains industry there is a need for more efficient use of fertiliser inputs (Kingwell and Pannell 2005). Improved fertiliser use efficiency can come from adjustment of application rates based on yield goals and ...
Positive charge discovered across Western Australian wheatbelt soils challenges key soil and nitrogen management assumptions.(Report)
Feb 01, 2009; ... Introduction This work examines the current assumption that nitrate leaches freely with water flow in soils of Western Australia (WA). This assumption has important soil and fertiliser management implications because it forms the basis of nitrate leaching models used, for ...
Preface: Chinese conservation tillage.
Dec 01, 2008; ... Papers in this special section focus on the results of ACIAR-funded projects concerned with more sustainable dryland grain production on the loess plateau of China. The loess soil area extends across a large area of northern China, and its products feed a significant proportion of China's ...