Australian Journal of Soil Research articles from September 2008

Australian Journal of Soil Research archives from September 2008

Preface: Soils & Society 2006 Conference--a short report and an introduction to special issue.(New Zealand Society of Soil Science)(Conference news)
September 1, 2008... Introduction The soil resource affects all aspects of New Zealand life, and is recognised as a living substrate that supports growth and filters waste. The resource needs to be protected and nourished so that it will continue to look after...

Potential for the phytoremediation of arsenic-contaminated mine tailings in Fiji.(Report)
September 1, 2008... Introduction Heavy metal contamination of soil is one of the world's major environmental problems, posing significant risks to plants, animals, and humans. Phytoremediation, defined as the use of plants to remove or render harmless certain...

Distribution of heavy metals in a sandy forest soil repeatedly amended with biosolids.(Report)
September 1, 2008... Introduction Land application is a common alternative to landfilling of municipal biosolids, i.e. treated sewage sludge suitable for beneficial use (Magesan and Wang 2003; Wang et al. 2008). Application of biosolids can potentially improve...

Effect of treated zeolite, iron waste, and liming on phytoavailability of Zn, Cu, and Ni in long-term biosolids-amended soils.(Report)
September 1, 2008... Introduction The intensive use of sewage sludge (biosolids) as a soil amendment can result in the accumulation of heavy metals in the soil. Heavy metals remain in the soil for many years (Alloway and Jackson 1991) and are a potential cause...

Decomposition of dicyandiamide (DCD) in three contrasting soils and its effect on nitrous oxide emission, soil respiratory activity, and microbial biomass--an incubation study.(Report)
September 1, 2008... Introduction In recent decades, dicyandiamide (DCD) has been used extensively as a nitrification inhibitor (NI) because of its highly effective inhibition of nitrification, and its non-volatile and non-biocidal nature (Trenkel 1997). DCD...

[N.sub.2]O and [N.sub.2] emissions from pasture and wetland soils with and without amendments of nitrate, lime and zeolite under laboratory condition.(Report)
September 1, 2008... Introduction Nitrous oxide, a potent greenhouse and ozone ([O.sub.3])-depleting gas, constitutes ~17.5 of New Zealand's total greenhouse gas emissions inventory (MfE 2007). Microbial processes in soil that produce [N.sub.2]O include...

Assessment of nitrogen losses from urea and an organic manure with and without nitrification inhibitor, dicyandiamide, applied to lettuce under glasshouse conditions.(Report)
September 1, 2008... Introduction Nitrogen (N) is the major nutrient element that regulates plant growth but is also contributor to environmental degradation. In New Zealand, urea is a widely used N fertiliser and its application has increased by 27%, i.e....

Evaluation of tephra for removing phosphorus from dairy farm drainage waters.(Report)
September 1, 2008... Introduction Phosphorus (P) enrichment of freshwater systems can stimulate increased growth of aquatic plants and algae, leading to accelerated eutrophication, when P is the main growth-limiting nutrient (Douglas et al. 2004). Improvements...

Bacterial leaching from dairy shed effluent applied to a fine sandy loam under irrigated pasture.(Report)
September 1, 2008... Introduction Land application of agricultural and industrial wastes has become increasingly popular, to promote nutrient recycling and environmental protection, with soil functioning as a barrier between wastes and groundwater. Dairy...

Nitrous oxide generation, denitrification, and nitrate removal in a seepage wetland intercepting surface and subsurface flows from a grazed dairy catchment.(Report)
September 1, 2008... Introduction Nitrogen (N) losses from applied chemical fertilisers, dairy effluent irrigation, and grazing animal excreta potentially cause eutrophication in receiving waters (Phipps and Crumpton 1994; Naiman et al. 1995; Carpenter et al....

Use of alkaline flyash-based products to amend acid soils: plant growth response and nutrient uptake.
September 1, 2008... Introduction The rate of acidification of soils in natural systems is generally very slow, and may take many years. In agricultural soils, however, acidification can occur more rapidly due to the use of nitrogen amendments, intensive...

Use of alkaline flyash-based products to amend acid soils: extractability of selected elements and their uptake by plants.(Report)
September 1, 2008... Introduction The application of flyash wastes to soils has been shown to improve the soil water-holding capacity and enhance plant growth by amending soil pH, and by supplying micronutrients (Aitken et al. 1984; Summers et al. 1998; Jala...

Understanding winter sodium deposition in Taranaki, New Zealand.(Report)
September 1, 2008... Introduction In New Zealand, aerial sodium (Na) inputs generally come from oceanic sources. The low level of industrial development in New Zealand, compared to many areas of the world, means that there are no significant inputs of Na from...

Carbon sequestration in urban landscapes: the example of a turfgrass system in New Zealand.(Report)
September 1, 2008... Introduction Global warming is a crucial environmental issue of the 21st century. The carbon (C) cycle is involved in the cause and remediation of the global climate change (Scholes and Noble 2001). Recent global concerns over increased...

Does atmospheric C[O.sub.2] concentration influence soil nitrifying bacteria and their activity?(Report)
September 1, 2008... Introduction Environmental settings for biological activity related to atmosphere and climate are changing rapidly. Of these changes, the increasing concentration of C[O.sub.2] in the atmosphere is particularly significant as it is a...

The use of diffuse reflectance spectroscopy for in situ carbon and nitrogen analysis of pastoral soils.(Report)
September 1, 2008... Introduction Global warming as a consequence of rising atmospheric C[O.sub.2] concentrations has focused the attention of researchers on the dynamics of soil organic carbon (SOC) (Post et al. 2001). Global soil C stocks are estimated to be...

Fate of biuret [sup.15]N and its effect on net mineralisation of native soil N in forest soils.(Report)
September 1, 2008... Introduction Several nitrogen (N) and carbon (C) compounds have been shown to stimulate plant growth (Sands and Zed 1979; Miller et al. 1988; Ali and Lovatt 1994; Rabe 1994). For example, application of an appropriate concentration of...