A5071602134- Plant Water Relations and Carbon Dynamics
- Soil Carbon and Nitrogen Dynamics
- Soil and Unsaturated Flow
- Coal and Its By-products
- Horticultural and Viticultural Research
- Irrigation Practices and Water Management
- Pasture and Agricultural Systems
- Crop Yield and Soil Fertility
- Tree-ring climate responses
- Mine drainage and remediation techniques
- Hydrology and Watershed Management Studies
- Agronomic Practices and Intercropping Systems
- Heavy metals in environment
- Agroforestry and silvopastoral systems
- Clay minerals and soil interactions
- Bioenergy crop production and management
- Forest ecology and management
- Coffee research and impacts
- Soil erosion and sediment transport
- Peatlands and Wetlands Ecology
- Climate change impacts on agriculture
- Plant Micronutrient Interactions and Effects
- Trypanosoma species research and implications
- Invertebrate Taxonomy and Ecology
- Ruminant Nutrition and Digestive Physiology
Charles Sturt University
2018-2022
Reef Ecologic
2021
Grains Research and Development Corporation
2016-2018
International Center for Tropical Agriculture
2018
Kano State University of Technology
2013-2017
University of New England
2010-2016
Bayero University Kano
2014
University of Technology Sydney
2004-2012
Commonwealth Scientific and Industrial Research Organisation
1997-2004
Plant Industry
1997-2004
Daily and seasonal patterns of tree water use were measured for the two dominant species, Angophora bakeri E.C.Hall (narrow-leaved apple) Eucalyptus sclerophylla (Blakely) L.A.S. Johnson & Blaxell (scribbly gum), in a temperate, open, evergreen woodland using sap flow sensors, along with information about soil, leaf, micro-climatological variables. The aims this work to: (a) validate soil-plant-atmosphere (SPA) model specific site; (b) determine total depth from which uptake must occur to...
Fly ash is a major waste of coal-power generation and its management environmental economic challenge, it will become even more critical with projected increase in the reliance on coal for power generation. The authors discuss how unique physicochemical properties can be strategically employed to ameliorate acidity sodicity, physical fertility constraints, agricultural soils. They show that careful selection type methods rates application, mutually compatible soil crop type, often reported...
Whole-vine transpiration was estimated for well-watered nine-year-old Sultana grapevines (Vitis vinifera L. cv. Sultana) from xylem sap flow measured with Granier's heat-dissipation probes. Canopy conductance of the grapevine calculated by inverting Penman–Monteith equation. Transpiration canopies strongly controlled canopy conductance. decreased exponentially increasing vapour pressure deficit (VPD) except in morning when solar radiation less than 200 W m–2 and predominantly limited...
Abstract A modified Jarvis–Stewart model of canopy transpiration ( E c ) was tested over five ecosystems differing in climate, soil type and species composition. The aims this study were to investigate the model's applicability multiple ecosystems; determine whether number parameters could be reduced by assuming that site‐specific responses solar radiation, vapour pressure deficit moisture content vary little between sites; examine convergence behaviour water‐use across sites. This...
Impermeable subsoil is a major constraint to root growth and water infiltration in most duplex soils of Australia, but can be ameliorated by channels or biopores created dead decomposed roots plant species that are adapted these soils. In the current study, we evaluated whether 6-year phase native woody planted belts sufficient significantly improve soil structure yellow Chromosol, us (but not E. nitens) plantations Tasmania because low mean minimum temperatures. Conditions within 3 weeks...
Quantifying water use of native vegetation is an important contribution to understanding landscape ecohydrology. Few studies provide long‐term (more than one growing season) estimates and even fewer quantify interseasonal interannual variation in transpiration. Globally, changes land are significantly altering ecohydrology, resulting problems such as dryland salinity excessive groundwater recharge. Estimating stand complex multispecies forests, due the differences relationships among sapwood...
Summary The growth and development of maize soya bean when grown in mixtures different proportions arrangements were studied at Samaru (11° 11' N, 38° E) Yandev (07° 23' 09° 10' the savannah belts Nigeria. crops sown both pure mixed stands. pure-stand densities 513 plants/m2 for 20·15 plants/m 2 bean. Mixtures made three proportions: additive (100:100), containing 100% sole crop population each crop; semi-additive (67:67), 67% crop's population; replacement (67:33 33:67), one to other's 33%....
The in vitro and vivo antitrypanosomal effects of the ethanol extract Senna occidentalis leaf were investigated. crude exhibited an activity against Trypanosoma brucei as it completely eliminated parasites' motility within 10 minutes postincubation with 6.66 mg/ml effective concentration. was further used to treat experimentally T. infected rats at concentrations 100 200 mg/kg body weight, beginning on day 5 post infections (p.i.). At termination experiment Day 11 p.i., significantly (P <...
The Agricultural Production Systems Simulator (APSIM) suite of models was used to predict dynamics in water and nitrogen soil, as well the growth yield sequential crops wheat barley pasture–wheat–barley rotations, between 1995 1997 at Roseworthy, South Australia. NWHEAT model satisfactorily predicted above-ground dry matter, leaf area index grain yields for both rotations with either grassy (Grass) or medic (Medic) pastures, including lack significant response fertiliser applied sowing....
Abstract BACKGROUND Analyses of sensitivity Global Food Security (FS) score to a key set supply or demand factors often suggest population and water as being the most critical on which policies tend focus. To explore other policy options, we characterized nexus between GFS including population, agricultural industrial uses, publications (as surrogate for investment in research development (R&D)) corruption perception index (CPI), reveal opportunities attaining enduring GFS. RESULTS We...