Australian Journal of Soil Research articles from March 2003

Australian Journal of Soil Research archives from March 2003

Nitrous oxide emission from Australian agricultural lands and mitigation options: a review.
March 1, 2003... Introduction Over the 20th century, the global mean surface temperature has increased by about 0.6 [+ or -] 0.2[degrees]C (IPCC 2001). This warming effect has primarily resulted from the increase in the concentrations of greenhouse gases...

Estimating nitrous oxide emissions from flood-irrigated alkaline grey clays.
March 1, 2003... Introduction Concern is mounting regarding the quantities of nitrous oxide ([N.sub.2]O) entering the earth's atmosphere, as agriculture is a major contributor to the atmospheric [N.sub.2]O pool. Carbon dioxide, methane, and [N.sub.2]O...

Using quantity/intensity relationships to assess the potential for ammonium leaching in a Vertosol.
March 1, 2003... Introduction High concentrations of exchangeable ammonium (N[H.sub.4.sup.+]) (in the order of 0.1 cmol/kg) have been observed below 1.2 m in a Vertosol soil near Warra in south-eastern Queensland (Hossain et al. 1996). Nitrogen is often...

Relationships between extractable Ni, Co, and other metals and some microbiological characteristics of different ultramafic soils from New Caledonia.(nickel, cobalt)
March 1, 2003... Introduction New Caledonian ultramafic soils are derived from metalliferous rocks containing, in particular, nickel, magnesium, iron, manganese, cobalt, and chromium (Brooks 1987). These soils are also characterised by a low content of...

Dispersibility of glacial loess in particle size analysis, USA.
March 1, 2003... Introduction Smalley and Vita-Finzi (1968) and more recently Wright (2001) reviewed the literature on cold (glacial) and hot (desert) loesses. The silt-size clay aggregates in these, however, have not received the attention their...

Particle-size distribution of soil and the perception of texture. (Short Communication).
March 1, 2003... Introduction In a comparison of the soil texture classification systems in use in Australia and the United States, Minasny and McBratney (2001) have suggested that most countries including Australia should consider adopting the...

The relationship of soil water repellency to aliphatic C and kaolin measured using DRIFT.(diffuse reflectance infrared fourier transform spectrometry)
March 1, 2003... Introduction The expression of soil water repellency is mostly determined by the interaction between organic matter content and texture of the soil. In general, water repellency increases with the increase of organic matter and decreases...

Effects of addition of flavonoid signals and environmental factors on nodulation and nodule development in the pea (Pisum sativum)--Rhizobium leguminosarum bv. viciae symbiosis.
March 1, 2003... Introduction The legume--Rhizobium symbiosis is the single most important source of biologically fixed nitrogen in agricultural systems (Kahindi et al. 1997). As a biological process it does not depend on external sources of energy and has...

Interrelationships between edaphic factors potentially limiting cereal growth on alkaline soils in north-western Victoria.
March 1, 2003... Introduction Soils within the semi-arid region of the Victorian southern Mallee are mainly Calcarosols (Isbell 1996). They are characterised by heavy subsoils that contain variable, but usually high levels of salt, exchangeable sodium, and...

The influence of low rates of air-dried biosolids on yield and phosphorus and zinc nutrition of wheat (Triticum durum) and barley (Hordeum vulgare).
March 1, 2003... Introduction Since 1993 when dumping of biosolids into the sea was officially terminated in Australia, a fully land-based disposal scheme was required by cities and states. The application of digested waste water biosolids to agricultural...

Simultaneous use of newly adopted simple sensors for continuous measurements of soil moisture and salinity.
March 1, 2003... Introduction Salinity caused by the presence of shallow saline groundwater is widely acknowledged to adversely affect production of the lands around the world, especially in arid and semi-arid regions (Kandiah 1990). The upward evaporative...

Leaching of copper from contaminated soil following the application of EDTA. I. Repacked soil experiments and a model.
March 1, 2003... Introduction There are a number of reasons why the interactions between copper and EDTA in soil are of interest. Copper compounds and EDTA are widely used and are persistent chemicals in the environment. Copper is used in orchard sprays;...

Leaching of copper from contaminated soil following the application of EDTA. II. Intact core experiments and model testing *.
March 1, 2003... Introduction In Thayalakumaran et al. (2003), which we will subsequently refer to as Part I, we described the transport, under near-saturated conditions, of copper in repacked columns of a contaminated soil, as well as its temporal...