S. R. Murphy

Land degradation decision trigger points to minimise soil erosion in rangelands

John Leys, Sarah E. McDonald, S. R. Murphy, Gemma L. Turnbull et autres

Predicting when vegetation cover (the sum of photosynthetic and non-photosynthetic vegetation) drops below soil erosion protection thresholds is vital for reducing land degradation. This study developed a potential for land degradation (PoLD) framework to identify decision-trigger points that warn of low cover …

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Changes in land management practices have reduced wind erosion in the cropping areas of far south-western NSW, Australia

John Leys, Tanisha Shields, S. R. Murphy, Terry Koen

Since the mid-1970s, approximately 250 000 ha of rangelands in semi-arid far south-western NSW, Australia, have been converted to cropping land use, resulting in substantial wind erosion. Wind erosion is of concern because of its adverse impacts on soils, agricultural production, aviation, …

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A lucerne-digit grass pasture offers herbage production and rainwater productivity equal to a digit grass pasture fertilized with applied nitrogen

S. R. Murphy, S. P. Boschma, S. Harden

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Evaporation Losses and Evapotranspiration Dynamics in Overhead Sprinkler Irrigation

MJ Uddin, S. R. Murphy

A comprehensive review of evaporation losses and evapotranspiration (ET) dynamics in sprinkler irrigation revealed substantial differences in the magnitudes of the different components of evaporation. Field studies reported that droplet evaporation losses ranged from 0.5%–45%, whereas theoretical studies indicated losses of less …

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Plant Root Depth of Tropical Perennial Grasses in a Temperate Environment

S. R. Murphy, G. M. Lodge, Mark A. Brennan

Water Use Indices of Tropical Perennial Grasses in a Temperate Environment

S. R. Murphy, G. M. Lodge, Mark A. Brennan

Optimum plant density of Digitaria eriantha for herbage accumulation and hydrological performance in a summer dominant rainfall zone

S. P. Boschma, S. R. Murphy, S. Harden

Abstract In the frost‐prone, summer dominant rainfall zone of northern NSW and southern Queensland, sown tropical grass pastures commonly establish with plant densities >26 plants per m2, yet the optimum density for maximum herbage accumulation and hydrological performance is not known. A …

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Soil water dynamics, herbage production and water use efficiency of three tropical grasses: Implications for use in a variable summer‐dominant rainfall environment, Australia

S. R. Murphy, S. P. Boschma, S. Harden

Abstract In the moist mid‐latitudes of eastern Australia, soil water dynamics, herbage production and water use efficiency (WUE) were monitored during 2006–2008, for five perennial pastures: digit grass (Digitaria eriantha), Rhodes grass (Chloris gayana), forest bluegrass (Bothriochloa bladhii), native grass (Bothriochloa macra …

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Low canopy cover in a sown Digitaria eriantha Steud. pasture improves establishment of Trifolium subterraneum L.

S. P. Boschma, Bruce McCorkell, C. A. Harris, S. R. Murphy

ABSTRACT In the summer‐dominant rainfall zone of inland northern New South Wales and southern Queensland, tropical grass‐temperate legume mixed pastures can provide forage for grazing livestock for most of the year; however, the effect of canopy cover and its interaction with ground …

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Lovely Lilies: the couple farming tropical water lilies in WA

S. R. Murphy

The entrepreneurs growing water lilies in the temperate climate of Margaret River who don their wetsuits each day to harvest the lovely flowers.

Effect of tillage and compost amendment on turfgrass establishment on a compacted sandy loam

Charles J. Schmid, James A. Murphy, S. R. Murphy

Severe compaction of urban soil is a common problem that makes establishment and maintenance of turfgrass difficult. Compaction alleviation prior to seeding or sodding with turfgrass should lead to more persistent cover with reduced labor and maintenance inputs. A field study was …

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Growth rate and nutritive value of sown tropical perennial grasses in a variable summer‐dominant rainfall environment, Australia

S. P. Boschma, S. R. Murphy, S. Harden

Abstract Growth rate, proportion of leaf and stem and nutritive value of sown tropical perennial grasses have not previously been documented for the dryland, frost‐prone summer‐dominant rainfall region of eastern Australia. An experiment was conducted in northern inland New South Wales with …

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