A5073717211- Soil Carbon and Nitrogen Dynamics
- Pasture and Agricultural Systems
- Soil and Water Nutrient Dynamics
- Ruminant Nutrition and Digestive Physiology
- Clay minerals and soil interactions
- Soil and Unsaturated Flow
- Soil Geostatistics and Mapping
- Plant Micronutrient Interactions and Effects
- Crop Yield and Soil Fertility
- Mine drainage and remediation techniques
- Soil Management and Crop Yield
- Aluminum toxicity and tolerance in plants and animals
- Agricultural Science and Fertilization
- Plant nutrient uptake and metabolism
- Peatlands and Wetlands Ecology
- Agronomic Practices and Intercropping Systems
- Botany and Plant Ecology Studies
- Phosphorus and nutrient management
- Bioenergy crop production and management
- Legume Nitrogen Fixing Symbiosis
- Heavy metals in environment
- Agriculture, Plant Science, Crop Management
- Agriculture, Soil, Plant Science
- Nitrogen and Sulfur Effects on Brassica
- Genetic and phenotypic traits in livestock
Wagga Wagga Base Hospital
2009-2024
New South Wales Department of Primary Industries
2010-2023
Charles Sturt University
2001-2017
Agricultural Institute
2007-2012
General Atomics (United States)
2009
Commonwealth Scientific and Industrial Research Organisation
1997
Limestone College
1990
The University of Sydney
1988-1990
In addition to its important influence on soil quality and therefore crop productivity, organic carbon (SOC) has also been identified as a possible C sink for sequestering atmospheric dioxide. Limited data are available the impact of management practices rate SOC change in agricultural soils Australia. this paper, results three long-term trials (13–25 years) located near Wagga temperate Australia were used assess dynamics under different tillage stubble practices, cropping intensities...
Removing carbon dioxide (CO2) from the atmosphere and storing (C) in resistant soil organic matter (SOM) is a global priority to restore fertility help mitigate climate change. Although it widely assumed that retaining rather than removing or burning crop residues will increase SOM levels, many studies have failed demonstrate this. We hypothesised microbial nature of provides predictable nutrient stoichiometry (C:nitrogen, C:phosphorus C:sulphur–C:N:P:S) target using supplementary nutrients...
In Australia, pastures form the basis of extensive livestock industries and are important components crop rotation systems. Despite recent interest in soil carbon sequestration value mitigation climate change, little information is available on potential New South Wales farming To quantify stocks under different a range pasture management practices, field survey was undertaken 2007 central southern NSW as well north-eastern Victoria, using paired-site approach. Five comparisons were...
Determination of pH in water, 0.01 M CaCl2, and 0.1 KCl, at dilution ratios 5:1, 2.5:1, 2:1 solution: soil, were found to be highly correlated over a wide range. The regression equations, obtained on small group New South Wales soils under strict laboratory conditions, similar those reported comparative studies from Britain (Davies 1971) Canada (van Lierop 1981). relationship between water (pHw) CaCl2 (pHca) 2.5:1 soil was pHca = 1.05 pHw - 0.9 equation is valid only for nonsaline, net...
Accounting for carbon (C) in soil will require a degree of precision sufficient to permit an assessment any trend through time. Soil can contain many chemically and physically diverse forms organic inorganic carbon, some which might not meet certain definitions ‘soil carbon’. In attempt assess how measurements these C vary with analytical method, we measured the concentration 26 substrates by three methods commonly used (Walkley–Black, Heanes, Leco). The Heanes Leco were essentially...
Comprehensive data on grain yield responsiveness to applications of the major nutrients nitrogen, phosphorus, potassium, sulfur in Australian cropping experiments have been assembled Better Fertiliser Decisions for Cropping (BFDC) National Database scrutiny by BFDC Interrogator. The database contains results individual field nutrient response that need be collectively integrated into a model predicts probable from soil tests. potential degree (relative yield, RY%) is related concentration...
Abstract Grazing management is a known influence of carbon accumulation in agricultural soil, but there conflicting evidence on the extent. This study compared organic and nitrogen stocks at conclusion 5‐year grazing trial fertilised native pasture south‐eastern Australia. The included three treatments: ungrazed, tactically grazed (set stocking with biannual rest periods) cell (intense frequent long periods). There was no treatment detected sward composition when averaged over seasons or...
Twenty bulked soil samples will define the average pH of 1 ha a type. Air-drying shortly after collection is needed to prevent development acidity during moist storage. Determining in clear supernatant mixture 0.01 M CaCI2 and shaken for h gives highly reproducible values that are good estimate field pH. Threefold changes sampling volumes had very small effect on variance, so sample size does not strongly influence error associated with collection.
Drought significantly constrains higher yield of alfalfa (Medicago sativa L.) in arid and semiarid areas all over the world. This study evaluated responses leaf cuticular wax constituents to drought treatment their relations gas-exchange indexes across six cultivars widely grown China. Water deficit was imposed by withholding water for 12 d during branching stage. Cuticular waxes on leaves were dominated primary alcohols (41.7-54.2%), alkanes (13.2-26.9%) terpenes (17.5-28.9%), with small...
In 2 field experiments, varying lime rates were applied to acidic soils and incorporated 10 or 20 cm depth by rotary hoeing. Expt 2, soil was also limed in 10-cm layers 40 depth, the profile reconstructed. The aim remove acidity as a constraint plant growth. both 3 cereal cultivars (1 barley wheat) of aluminium (Al) tolerance sown. Grain yield monitored 4 seasons (Expt 1) 5 2). Incorporation rather than improved yields cereals 1, markedly drier season 2. demonstrated be function pHCa 0-10...
Liquid forms of phosphorus (P) have been shown to be more effective than granular P for promoting cereal growth in alkaline soils with high levels free calcium carbonate on Eyre Peninsula, South Australia. However, the advantage liquid over fertiliser has not fully investigated across wide range used grain production A glasshouse pot experiment tested if fertilisers were growing spring wheat (Triticum aestivum L.) (monoammonium phosphate) 28 from all Australia soil pH (H2O) ranging 5.2 8.9....