Australian Journal of Soil Research articles from May 2004

Australian Journal of Soil Research archives from May 2004

Effects of carrot growing on volcanic ash soils in the Ohakune area, New Zealand.
May 1, 2004... Introduction At Ohakune, extensive areas of soils derived from young andesitic tephras are used for intensive market gardening. Lying to the south-west of Mt Ruapehu (Fig. 1), the excellent physical properties of the volcanic soils and...

Effects of a water treatment residue, lime, gypsum, and polyacrylamide on the water retention and hydraulic conductivity of two contrasting soils under field conditions in KwaZulu-Natal, South Africa.
May 1, 2004... Introduction An essential objective in the production of potable water from turbid primary sources is the removal of dissolved and suspended impurities, normally by the addition of flocculants such as aluminium sulfate, ferric chloride,...

A parameterised equation to estimate soil hydraulic conductivity in the field.
May 1, 2004... Introduction The Darcy-Buckingham approach for the description of soil water dynamics involves the determination and use of soil hydraulic conductivity K v. soil water content [theta] functions. One of the most convenient field methods of...

Field calibration of a capacitance soil water probe in heterogeneous fields.
May 1, 2004... Introduction Many applications in fields such as hydrology, meteorology, and agriculture require mapping of soil moisture, since the amount and status of water in soils impacts crop growth and the fate of agricultural chemicals applied to...

Comparison of extraction techniques for measuring exchangeable cations in calcareous soils.
May 1, 2004... Introduction Cation exchange capacity (CEC) measurement in alkaline soils is complicated by the need to remove soluble cations and the requirement to buffer extraction solution at a pH to prevent soluble carbonates from dissolving (Tucker...

A field study of phosphorus mobilisation from commercial fertilisers.
May 1, 2004... Introduction Agricultural catchments contribute to excessive phosphorus (P) concentrations, and associated algal problems, in the waterways of south-eastern Australia (Gutteridge et al. 1992; Environment Protection Authority 1995; Webster...

The liming effect of bauxite processing residue (red mud) on sandy soils.
May 1, 2004... Introduction Refining of bauxite ore for aluminium via the Bayer process produces red mud as a residue. Approximately 0.5-2.5 t of red mud is produced per t of alumina produced. The amount of red mud produced depends on the quality of the...

The nature and distribution of copper, lead, and zinc in soils of a highly urbanised sub-catchment (Iron Cove) of Port Jackson, Sydney.
May 1, 2004... Introduction Heavy metals are not biodegradable and are generally poorly mobile (Mermut et al. 1996); hence, metals tend to accumulate in soils with time and frequently constitute a substantial store of heavy metals. Factors controlling...

Influence of toxic metals on activity of acid and alkaline phosphatase enzymes in metal-contaminated landfill soils.
May 1, 2004... Introduction The preservation of soil quality is essential for sustainable agriculture. Organic matter is a vital attribute of soil quality. The scarcity of traditional manure and abundance of organic wastes, such as sewage sludge and...

Effects of increasing salinity and [sup.15]N-labelled urea levels on growth, N uptake, and water use efficiency of young tomato plants.
May 1, 2004... Introduction Salinity and drought are the major constraints affecting plant growth and productivity around the world. It is estimated that 10% of the world's current croplands are affected by salinity; about 1500 million ha of non-...

Corrigendum.(Correction Notice)
May 1, 2004... Volume 42, issue 1, pp. 107-114. Dung decomposition in temperate dairy pastures. I. Changes in soil chemical properties. S. R. Aarons, C. R. O'Connor, C. J. P. Gourley p. 110, Fig. 2. The y-axis caption should read 'Dung wet weight...