A5067611134- Pasture and Agricultural Systems
- Ruminant Nutrition and Digestive Physiology
- Agronomic Practices and Intercropping Systems
- Legume Nitrogen Fixing Symbiosis
- Soil Carbon and Nitrogen Dynamics
- Agroforestry and silvopastoral systems
- Plant nutrient uptake and metabolism
- Weed Control and Herbicide Applications
- Botany and Plant Ecology Studies
- Crop Yield and Soil Fertility
- Soil and Water Nutrient Dynamics
- Bioenergy crop production and management
- Plant Parasitism and Resistance
- Plant Micronutrient Interactions and Effects
- Agriculture and Biological Studies
- Plant Pathogens and Resistance
- Plant responses to water stress
- Allelopathy and phytotoxic interactions
- Plant and Fungal Species Descriptions
- Genetically Modified Organisms Research
- Seedling growth and survival studies
- Agriculture Sustainability and Environmental Impact
- demographic modeling and climate adaptation
- Horticultural and Viticultural Research
- Nematode management and characterization studies
New South Wales Department of Primary Industries
2008-2024
Wagga Wagga Base Hospital
2015-2019
Charles Sturt University
2006-2018
The University of Western Australia
2008-2013
Commonwealth Scientific and Industrial Research Organisation
2001
Australian farmers and scientists have embraced the use of new pasture legume species more than those in any other country, with 36 annual 11 perennial legumes having cultivars registered for use. Lucerne (Medicago sativa), white clover (Trifolium repens), red (T. pratense) were introduced by early European settlers are still important Australia, but several species, notably legumes, been developed specifically environments, leading to evolution unique farming systems. Subterranean...
Annual pasture legume species can vary more than 3-fold in their critical external phosphorus (P) requirement (i.e. P required for 90% of maximum yield). In this work we investigated the link between root morphology, acquisition and among species. The morphology acclimation five annual legumes one grass to low soil availability was assessed a controlled-environment study. (Dactylis glomerata L., Ornithopus compressus sativus Brot.), intermediate (Biserrula pelecinus Trifolium hirtum All.) or...
The effects of different management regimes on N2 fixation by subterranean clover (Trifolium subterraneum) in annual pastures and lucerne (Medicago sativa) perennial-based were examined 5 experiments 55 commercial paddocks, which the grown phased rotation with crops. objectives to quantify inputs fixed determine ways increasing nitrogen (N) into ley-farming systems southern New South Wales north-eastern Victoria. Estimates amounts fixed, based above-ground herbage production grazed pastures,...
Abstract Temperate pasture legumes (e.g . Trifolium and Medicago spp.) often have a higher phosphorus (P) requirement for maximum productivity than grasses. This is partly attributed to differences between grasses in their ability acquire P from soil. We are the first report root morphology traits important soil acquisition range of novel being developed use temperate pastures southern Australia. Up 3·6‐fold specific length (SRL) (79–281 m g −1 root) 6·1‐fold hair (RHL) (0·12–0·75 mm) was...
In recent decades several pasture legumes have been available in southern Australia as potential alternatives to the most widely used annual legume Trifolium subterraneum. Little is known about their soil phosphorus (P) requirements, but controlled environment experiments indicate that at least some may differ P fertiliser requirements. this study, varieties, including T. subterraneum reference species, were grown up four sites any one year over a 3-year period (in total, seven site ×...
Nine pasture treatments differing in species composition were monitored for changes soil water content at a depth of 0.10–1.70 m, 2 sites (Kamarah and Junee), the wheatbelt eastern Australia. Treatments containing perennial species, viz. lucerne (Medicago sativa L.), phalaris (Phalaris aquatica cocksfoot (Dactylis glomerata mixture (lucerne + cocksfoot), wallaby grass (Austrodanthonia richardsonii Cashmore.), lovegrass (Eragrostis curvula (Schrader) Nees.), sown with subterranean clover...
Medicago sativa L. is the most widely sown perennial forage legume in farming systems of southern Australia. However, M. lacks adaptation to winter waterlogged conditions. This constraint has highlighted need for new legumes adapted conditions and locations where summer too dry survival Trifolium repens T. fragiferum To explore options suitable these circumstances, 10 species Lotus were evaluated waterlogging tolerance including: two accessions corniculatus L., four tenuis Waldst. &...
Spatial and temporal variation in soil Mn2+ was observed over a 12-month period at two field sites near Gerogery Binalong southern New South Wales (NSW), Australia. Three pot experiments were then conducted to emulate the range of concentrations determine effect different on lucerne subterranean clover seedling growth, as well heating pH concentrations. Concentrations surface 0.20 m varied given sampling date by up 288% (2.5–9.7 µg/mL) 183% (8.7–24.6 across sites, respectively. At both...
The adaptation of 28 annual legume species to heavy clay cracking soils prone waterlogging during winter was evaluated at 3 sites ranging in pH (CaCl2) from 4.6 5.4 the wheatbelt southern NSW. 32 accessions and cultivars included Medicago arabica, M. polymorpha, Melilotus albus (syn. alba), Trigonella balansae, 24 Trifolium species. Species identified as potentially valuable new plants for these environments hirtum, T. echinatum, glanduliferum arabica production, albus, glanduliferum,...
Soil mineral nitrogen (N) profiles during the growing season and changes in total soil N available after 3–4 years were examined under 9 different pasture swards containing annual legumes, lucerne (Medicago sativa L.), or one of 4 perennial grasses at 2 sites representative low medium rainfall belt south-eastern Australia. The effect presence phalaris (Phalaris aquatica L.) on spatial variation surface pH was also measured. pastures subterranean clover (Trifolium subterraneum with weeds,...
The mainstream pasture legume species such as Trifolium subterraneum, T. repens and annual Medicago spp. used in the temperate systems of southern Australia have high critical external requirements for phosphorus (P) (i.e. P required to achieve 90% maximum yield). This work aimed identify alternative that could be with lower input. Shoot root biomass 12 was measured response seven rates applied top 48 mm soil a pot experiment. Most had yields similar but some only one-third this. requirement...
Summary. Herbicide dose response curves were developed for 5 herbicide treatments, MCPA, 2,4-DB, bromoxynil, MCPA + terbutryn and diuron, when applied to 2 cultivars of subterranean clover (Trifolium subterraneum L.) in a glasshouse experiment. The effect varying spraying time (14 May 14 June) leaf stage (3–4 v. 8–10 trifoliate leaves) at was also examined. rate multiple the recommended required reduce herbage yield by 50% (I50) differed markedly between treatments. mixtures most phytotoxic...
The effect of using 4 perennial grasses or lucerne (Medicago sativa L.) in the pasture phase on subsequent wheat grain yield, protein, and hardness was investigated at 2 sites (Kamarah Junee) south-eastern Australian cereal belt. 6 treatments were 5 mixtures subterranean clover (Trifolium subterraneum L.), with one lucerne, phalaris (Phalaris aquatica cocksfoot (Dactylis glomerata L), wallaby grass (Austrodanthonia richardsonii (Cashm.) H.P. Linder), lovegrass (Eragrostis curvula (Schrader)...
The influence of initial plant density on the changes in populations 3 perennial pasture species, lucerne (Medicago sativa L.), wallaby grass (Austrodanthonia richardsonii (Cashm.) H.P. Linder), and phalaris (Phalaris aquatica over a 3-year phase was examined wheatbelt southern New South Wales. perennials were sown at 5 rates combination with subterranean clover (Trifolium subterraneum L.) 2 locations, Kamarah [430 mm average annual rainfall (a.a.r.)] Junee (550 a.a.r). range for lucerne,...
In the high-rainfall zone of Australia (HRZ, >600 mm), most pasture systems are dominated by perennial grasses with low levels inter-dispersed legume. Numerous authors have shown that a legume content 20–50% is required to maximise livestock production. Consequently, these needs be increased if production improved. Perennial options such as lucerne (Medicago sativa) and white clover (Trifolium repens) limited in their application this due sensitivity acid soils (pH(CaCl2) <4.8)...
This study examined whether the productivity and persistence of mixed pastures that included subterranean clover (Trifolium subterraneum L.), lucerne (Medicago sativa and/or phalaris (Phalaris aquatica L.) were improved if species spatially separated rather than being sown together in each drill row. The also compared with alternative annual legume biserrula (Biserrula pelecinus strand medic littoralis Rhode ex Loisel). Twelve pasture treatments replicated field experiments at five locations...