Australian Journal of Soil Research articles from May 2005

Australian Journal of Soil Research archives from May 2005

Behaviour and management of water repellent soils--preface.
May 1, 2005... Recently, it has become clear that soil water repellency is much more widespread than formerly thought. Water repellency has been reported in most continents of the world for varying land uses and climatic conditions. Soil water repellency...

Extraction of compounds associated with water repellency in sandy soils of different origin.
May 1, 2005... Introduction It has been proposed that water repellency is caused by the accumulation of hydrophobic organic compounds released from roots (Dekker and Ritsema 1996; Doerr et al. 1998), as fungal or microbial by-products (Savage et al....

Organic compounds at different depths in a sandy soil and their role in water repellency.
May 1, 2005... Introduction It is widely accepted that soil water repellency is caused by hydrophobic organic compounds deposited on soil mineral or aggregate surfaces or present as interstitial matter (Wallis and Home 1992; Doerr etal. 2000). The...

The role of tree stem proximity in the spatial variability of soil water repellency in a eucalypt plantation in coastal Portugal.
May 1, 2005... Introduction With a rapidly growing body of literature on soil water repellency (DeBano and Dekker 2000), it is now increasingly evident that the resistance of soils to wetting is not just some pedological curiosity limited to rather...

Effects of heating and post-heating equilibration times on soil water repellency.(Short Communication)
May 1, 2005... Introduction It has long been established that heating of potentially water repellent soils, whether in situ or in the laboratory, can influence their wettability. For example, drying soils at temperatures (T) considerably above room T may...

Temporal dynamics of water repellency and soil moisture in eucalypt plantations, Portugal.
May 1, 2005... Introduction The spatial and temporal dynamics of soil water repellency can be expected to cause considerable variations in soil hydrological response. In particular, the time taken for repellency to break down during rainfall, the speed...

Soil water repellency in north-eastern Greece with adverse effects of drying on the persistence.
May 1, 2005... Introduction Dry soils are normally easily wetted by rainfall and irrigation. If the attractive forces are neutralised or absent, e.g. because of the presence of a hydrophobic coating on sand grains or aggregates, soils are said to resist...

Water repellency under natural conditions in sandy soils of southern Spain.
May 1, 2005... Introduction The problem of soil water repellency has been recognised in various parts of the world (DeBano 2000; Jaramillo et al. 2000), including Spain (Cerda 1993, 1998; Moral Garcia 1999). The effects of fire-induced water repellency...

Soil water repellency under dry and wet antecedent weather conditions for selected land-cover types in the coastal zone of central Portugal.
May 1, 2005... Introduction Over the past decades, soil water repellency or the resistance of soil to wetting has been encountered in many countries on all 4 inhabited continents (e.g. Dekker 1998; Ritsema 1998; DeBano 2000; Doerr et al. 2000). There is...

The impact of soil water repellency on soil hydrological and erosional processes under Eucalyptus and evergreen Quercus forests in the Western Mediterranean.
May 1, 2005... Introduction Changes of similar sign are occurring on lands unsuitable for agriculture on both sides of the Western Mediterranean Sea (Hamza 1994; Ferreira et al. 1997; Carvalho et al. 1999; Laouina 1999; Coelho et al. 2000) as a result of...

Spatial and temporal variability of soil water repellency of Amazonian pastures.
May 1, 2005... Introduction Over 75% of Amazonian deforestation in the past 30 years has been directed towards the establishment of pastures (Fearnside 1996). The productivity of Amazonian pastures declines within 4-8 years of establishment, frequently...

Influence of burning intensity on water repellency and hydrological processes at forest and shrub sites in Portugal.
May 1, 2005... Introduction Consequences of soil water repellency include reduced soil infiltration capacity and associated increases in overland flow and soil erosion (e.g. Burch et al. 1989; Imeson et al. 1992; Scott and Schulze 1992; Scott 1993;...

The role of soil water repellency in overland flow generation in pine and eucalypt forest stands in coastal Portugal.
May 1, 2005... Introduction There now remains little doubt that soil water repellency, the resistance of soil to instantaneous wetting, is a widespread phenomenon occurring in many soils worldwide (Dekker 1998; Ritsema 1998; DeBano 2000a; Dekker and...

Competitive sorption of metals in water repellent soils: implications for irrigation recycled water.
May 1, 2005... Introduction In Australia, as in many other parts of the world, increasing regulation covering the delivery and collection of on-farm water and realistic charges being applied for its use are forcing many farmers to seek alternative water...

Assessment of the application of percolation theory to a water repellent soil.(Short Communication)
May 1, 2005... Introduction Microscopically examining a Dutch soil that was macroscopically water repellent, Bisdom etal. (1993) identified only a few hydrophobic particles. Likewise, Bauters et al. (1998) observed that as few as 3 hydrophobic grains in...

A new modelling approach to simulate preferential flow and transport in water repellent porous media: model structure and validation.
May 1, 2005... Introduction Soil water repellency is currently receiving increasing attention from scientists and policy makers, due to the adverse and sometimes devastating effects it has on environmental quality, agricultural crop production, and turf...

A new modelling approach to simulate preferential flow and transport in water repellent porous media: parameter sensitivity, and effects on crop growth and solute leaching.
May 1, 2005... Introduction Water repellency in soils has been documented in many parts of the world in both arid and humid climates (Jaramillo et al. 2000). It is mostly caused by hydrophobic waxes on the surface of the sand grains and in the particular...

Effects of surfactant treatments on the wettability of a water repellent grass-covered dune sand.
May 1, 2005... Introduction The phenomenon of soil water repellency has been recognised in various parts of the world (DeBano 2000; Doerr et al. 2000; Jaramillo et al. 2000) including the Netherlands (Hooghoudt 1950; Dekker and Jungerius 1990; Dekker and...

Effects of clay amendment on adsorption and desorption of copper in water repellent soils.(Short Communication)
May 1, 2005... Introduction Water repellency is a property of soil that reduces infiltration capacity and crop germination, reduces nutrient and chemical-holding capacity, and promotes erosion (Cann and Lewis 1994). Water repellency is a major problem...

Exponential increase of publications related to soil water repellency.
May 1, 2005... Introduction Since the beginning of last century, water repellent soils have been a topic of study for soil scientists, hydrologists and soil physicists around the world. Wettability of soils is important for many processes concerning the...