Search Results - "Gray, Colin W."

Assessment of lead availability in contaminated soil using isotope dilution techniques by Tongtavee, N., Shiowatana, J., McLaren, Ronald G., Gray, Colin W.

“…Isotope dilution methods using a stable isotope tracer ( 207Pb) were developed for the determination of Pb availability in contaminated soils. The methods…”
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Cadmium Concentrations in New Zealand Wheat: Effect of Cultivar Type, Soil Properties, and Crop Management by Gray, Colin W., Yi, Zicheng, Munir, Kiran, Lehto, Niklas J., Robinson, Brett H., Cavanagh, Jo‐Anne E.

“…Wheat (Triticum aestivum L.) grain is a contributing source of dietary Cd in New Zealand, but despite this, there is a dearth of information on Cd…”
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The impact of cattle grazing and treading on soil properties and the transport of phosphorus, sediment and E. coli in surface runoff from grazed pasture by Gray, Colin W., Ghimire, Chandra P., McDowell, Richard W., Muirhead, Richard W.

“…Contaminant loss from grazed pasture can negatively affect freshwater quality. There is, however, little data on the impact of different levels of…”
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Total soil cadmium concentrations in the Winchmore long-term phosphorus fertiliser trial are still increasing by Gray, Colin W., McDowell, Richard W., Noble, Alasdair D. L.

“…Reliable data on the rate of cadmium (Cd) accumulation in soils that receive phosphorus (P) fertiliser is vital to help manage the impact of Cd in agricultural…”
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Phosphorus transport in subsurface flow from a stony soil under irrigated and non-irrigated lucerne by Gray, Colin W., McDowell, Richard W., Graham, Scott L., Hunt, John E., Laubach, Johannes, Rogers, Graeme N. D., Carrick, Sam, Whitehead, David

“…The extent of phosphorus (P) loss from soils under deep rooting crops such as lucerne is currently unknown. This study used large lysimeters (2.0 by 1.5 m) to…”
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Superphosphate fertiliser application and cadmium accumulation in a pastoral soil by Kelliher, Francis M., Gray, Colin W., Noble, Alasdair D.L.

“…At Winchmore, single superphosphate fertiliser has been applied annually to grazed pasture plots since 1949. To determine whether or not cadmium (Cd) in the…”
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Symbiosis between Rhizobium leguminosarum bv. trifolii strain TA1 and a white clover cultivar benefits clover tolerance to cadmium toxicity by Young, Sandra D., van Koten, Chikako, Gray, Colin W., Cavanagh, Jo Anne E., Wakelin, Steve A.

“…New Zealand pastoral productivity relies heavily on biological nitrogen (N) fixation from rhizobia bacteria. Cadmium (Cd), present in pasture soils as an…”
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Effect of cultivar type and soil properties on cadmium concentrations in potatoes by Gray, Colin W., Yi, Zicheng, Lehto, Niklas J., Robinson, Brett H., Munir, Kiran, Cavanagh, Jo-Anne E.

“…Potatoes are a staple food in New Zealand and a contributing source of dietary cadmium (Cd), although there is little information nationally on the soil and…”
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Soil Factors Affecting Heavy Metal Solubility in Some New Zealand Soils by Gray, C.W, Mclaren, R.G

“…Heavy metal contamination of soils is usually quantified and guidelines set solely on the basis of total heavy metal content. However, it is recognised that…”
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Effects of soil compaction and irrigation on the concentrations of selenium and arsenic in wheat grains by ZHAO, Fang-Jie, LOPEZ-BELLIDO, F. Javier, GRAY, Colin W, WHALLEY, W. Richard, CLARK, Lawrence J, MCGRATH, Steve P

“…Arsenic is a known human carcinogen, whereas Se is essential to human health and human Se intake in some European countries has decreased in recent decades…”
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Atmospheric accessions of heavy metals to some New Zealand pastoral soils by Gray, Colin W, McLaren, Ronald G, Roberts, Ants H.C

“…Total heavy metal deposition was monitored at seven rural sites across New Zealand to determine the rate of atmospheric deposition of heavy metals to soils and…”
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Impacts of long-term phosphorus and nitrogen fertiliser application on soil biology: a New Zealand perspective by Schon, Nicole L., Stevenson, Bryan A., Fraser, Patricia M., Shi, Shengjing, Anderson, Craig, Mansfield, Sarah, Simpson, Robert, Cavanagh, Jo, Orwin, Kate H., Gray, Colin W., Mackay, Alec, Lear, Gavin, O'Callaghan, Maureen

“…Soil biology encompasses a vast diversity of organisms contributing to soil processes and functions that underpin the delivery of soil ecosystem services. We…”
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Super-phosphate fertiliser application and cadmium accumulation in a pastoral soil by Kelliher, F. M, Gray, Colin W, Noble, Alasdair D. L

“…Samples the soils at Winchmore in 2009 at intervals to a maximum depth of 1 m and estimates the mean cadmium accumulation rate for each level of phosphate…”
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The effect of ryegrass variety on trace metal uptake by Gray, Colin W., McLaren, Ronald G.

“…Trace metal deficiencies in soils can have adverse effects on plant production and animal health. Conversely, trace metals at elevated concentrations in soils…”
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Total soil cadmium concentrations in the Winchmore long-term phosphorus fertiliser trial are still increasing by Gray, Colin W., McDowell, Richard W., Noble, Alasdair D. L.

“…Reliable data on the rate of cadmium (Cd) accumulation in soils that receive phosphorus (P) fertiliser is vital to help manage the impact of Cd in agricultural…”
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Fractionation of soil cadmium from some new zealand soils by Gray, Colin W., McLaren, Ronald G., Roberts, Ants H.C., Condron, Leo M.

“…The concentrations and forms of soil cadmium (Cd) in 12 different New Zealand topsoils were investigated using a sequential fractionation procedure. Total soil…”
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