Australian Journal of Soil Research articles from June 2007

Australian Journal of Soil Research archives from June 2007

Pyrophosphate and orthophosphate addition to soils: sorption, cation concentrations, and dissolved organic carbon.
June 1, 2007... Introduction Polyphosphate fertilisers have recently gained attention in Australian agricultural research due to significant yield increases with the application of liquid polyphosphate compared to granular orthophosphate (OP) fertilisers...

Soil amendments modify phosphate sorption in an acid soil: the importance of P source (K[H.sub.2]P[O.sub.4], TSP, DAP).
June 1, 2007... Introduction Soil acidity is a widespread problem in Victoria, Australia, affecting at least 4 million ha of agricultural soil (Victoria Parliament 2004). Low soil pH can result in elevated concentrations of soluble aluminium (Al), which...

Relationship between phosphorus fractions and properties of highly calcareous soils.
June 1, 2007... Introduction Inorganic phosphorus (P) fractionation has been widely used to interpret native inorganic P status and the fate of applied P to soils (Soils and Torrent 1989b; Barbanti et al. 1994; Samadi and Gilkes 1998, 1999; Carreira et...

Converting reactive iron, reactive aluminium, and phosphorus retention index (PRI) to the phosphorus buffering index (PBI) for sandy soils of south-western Australia.(Short Communication)
June 1, 2007... Introduction Simple measurements of the capacity of soils to sorb phosphorus (P) are essential for effective management of the P status of the sandy soils in south-western Australia. P fertiliser advice for crops and pastures in the region...

Effectiveness of hydrated lime and artificial zeolite amendments and sedum (Sedum sediforme) plant cover in controlling soil erosion from an acid soil.
June 1, 2007... Introduction Land disturbance from construction activities has resulted in many-fold increases in soil erosion over pre-construction periods (Goldman et al. 1986), and sediment has become the principal transport medium for a range of...

Rehabilitation of field tunnel erosion using techniques developed for construction with dispersive soils.
June 1, 2007... Introduction Tunnel erosion is defined as the hydraulic removal of subsurface soil, resulting in the formation of underground channels and cavities (Boucher 1995). Ritchie (1963) describes 3 forms of tunnel erosion (i) field tunnelling,...

The spatial differences in arylsulfatase enzyme activity on hillslopes along a climatic transect.
June 1, 2007... Introduction The structure and function of ecosystems are both determined by the microenvironment--the areas immediately surrounding surface components, e.g. shrub, rock fragment, or biotic crust--which functions as a single eco-geomorphic...

Relationship between dielectric permittivity and water content for vadose zone materials of volcanic origin.
June 1, 2007... Introduction Since the seminal work by Topp et al. (1980), time domain reflectometry (TDR) has become the most widely accepted indirect technique used for soil water content sensing. In a briefing on TDR measurement principles and...

Modelling DCD effect on nitrate leaching under controlled conditions.(dicyandiamide)
June 1, 2007... Introduction The high input of nitrogen (N) fertilisers to intensive pasture production systems poses a risk to the environment. In New Zealand, up to 200kgN/ha is applied annually to grass/clover pastures (Thomas et al. 2005). Nitrogen...