Search Results - "Kirk, Guy J. D."

Rice increases phosphorus uptake in strongly sorbing soils by intra‐root facilitation by Kuppe, Christian W., Kirk, Guy J. D., Wissuwa, Matthias, Postma, Johannes A.

“…Upland rice (Oryza sativa) is adapted to strongly phosphorus (P) sorbing soils. The mechanisms underlying P acquisition, however, are not well understood, and…”
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A Model of Uranium Uptake by Plant Roots Allowing for Root-Induced Changes in the soil by Boghi, Andrea, Roose, Tiina, Kirk, Guy J. D

“…We develop a model with which to study the poorly understood mechanisms of uranium (U) uptake by plants. The model is based on equations for transport and…”
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Changes in organic carbon to clay ratios in different soils and land uses in England and Wales over time by Prout, Jonah M., Shepherd, Keith D., McGrath, Steve P., Kirk, Guy J. D., Hassall, Kirsty L., Haefele, Stephan M.

“…Realistic targets for soil organic carbon (SOC) concentrations are needed, accounting for differences between soils and land uses. We assess the use of…”
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Assessing the carbon capture potential of a reforestation project by Lefebvre, David, Williams, Adrian G., Kirk, Guy J. D., Paul, Burgess, J., Meersmans, Jeroen, Silman, Miles R., Román-Dañobeytia, Francisco, Farfan, Jhon, Smith, Pete

“…The number of reforestation projects worldwide is increasing. In many cases funding is obtained through the claimed carbon capture of the trees, presented as…”
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Carbon losses from all soils across England and Wales 1978-2003 by Bellamy, P.H, Loveland, P.J, Bradley, R.I, Lark, R.M, Kirk, G.J.D

“…More than twice as much carbon is held in soils as in vegetation or the atmosphere, and changes in soil carbon content can have a large effect on the global…”
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Measurement of zinc stable isotope ratios in biogeochemical matrices by double-spike MC-ICPMS and determination of the isotope ratio pool available for plants from soil by Arnold, Tim, Schönbächler, Maria, Rehkämper, Mark, Dong, Schuofei, Zhao, Fang-Jie, Kirk, Guy J. D, Coles, Barry J, Weiss, Dominik J

“…Analysis of naturally occurring isotopic variations is a promising tool for investigating Zn transport and cycling in geological and biological settings. Here,…”
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Evidence for the mechanisms of zinc uptake by rice using isotope fractionation by ARNOLD, TIM, KIRK, GUY J. D., WISSUWA, MATTHIAS, FREI, MICHAEL, ZHAO, FANG‐JIE, MASON, THOMAS F. D., WEISS, DOMINIK J.

“…ABSTRACT In an earlier study, we found that rice (Oryza sativa) grown in nutrient solution well‐supplied with Zn preferentially took up light 64Zn over 66Zn,…”
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The greenhouse gas impacts of converting food production in England and Wales to organic methods by Smith, Laurence G., Kirk, Guy J. D., Jones, Philip J., Williams, Adrian G.

“…Agriculture is a major contributor to global greenhouse gas (GHG) emissions and must feature in efforts to reduce emissions. Organic farming might contribute…”
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Rice Genotype Differences in Tolerance of Zinc-Deficient Soils: Evidence for the Importance of Root-Induced Changes in the Rhizosphere by Mori, Asako, Kirk, Guy J D, Lee, Jae-Sung, Morete, Mark J, Nanda, Amrit K, Johnson-Beebout, Sarah E, Wissuwa, Matthias

“…Zinc (Zn) deficiency is a major constraint to rice production and Zn is also often deficient in humans with rice-based diets. Efforts to breed more…”
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Modelling the potential for soil carbon sequestration using biochar from sugarcane residues in Brazil by Lefebvre, David, Williams, Adrian, Meersmans, Jeroen, Kirk, Guy J. D., Sohi, Saran, Goglio, Pietro, Smith, Pete

“…Sugarcane ( Saccharum officinarum L.) cultivation leaves behind around 20 t ha −1 of biomass residue after harvest and processing. We investigated the…”
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Below‐ground plant–soil interactions affecting adaptations of rice to iron toxicity by Kirk, Guy J. D., Manwaring, Hanna R., Ueda, Yoshiaki, Semwal, Vimal K., Wissuwa, Matthias

“…Iron toxicity is a major constraint to rice production, particularly in highly weathered soils of inland valleys in sub‐Saharan Africa where the rice growing…”
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Rice Root Properties for Internal Aeration and Efficient Nutrient Acquisition in Submerged Soil by Kirk, Guy J. D.

“…• The characteristics of Oryza sativa roots required for internal aeration may conflict with those for efficient nutrient acquisition, particularly the surface…”
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Magnesium supply alleviates iron toxicity-induced leaf bronzing in rice through exclusion and tissue-tolerance mechanisms by Rajonandraina, Toavintsoa, Ueda, Yoshiaki, Wissuwa, Matthias, Kirk, Guy J D, Rakotoson, Tovohery, Manwaring, Hanna, Andriamananjara, Andry, Razafimbelo, Tantely

“…Iron (Fe) toxicity is a widespread nutritional disorder in lowland rice causing growth retardation and leaf symptoms referred to as leaf bronzing. It is partly…”
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Interactive effects of organic acids in the rhizosphere by Oburger, Eva, Kirk, Guy J.D., Wenzel, Walter W., Puschenreiter, Markus, Jones, David L.

“…Organic acids released into the rhizosphere may perform many beneficial functions to the plant including metal detoxification and enhancement of nutrient…”
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Soil carbon dioxide venting through rice roots by Kirk, Guy J.D., Boghi, Andrea, Affholder, Marie‐Cecile, Keyes, Samuel D., Heppell, James, Roose, Tiina

“…The growth of rice in submerged soils depends on its ability to form continuous gas channels—aerenchyma—through which oxygen (O2) diffuses from the shoots to…”
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Enhanced zinc uptake by rice through phytosiderophore secretion: a modelling study by PTASHNYK, MARIYA, ROOSE, TIINA, JONES, DAVEY L., KIRK, GUY J. D.

“…ABSTRACT Rice (Oryza sativa L.) secretes far smaller amounts of metal‐complexing phytosiderophores (PS) than other grasses. But there is increasing evidence…”
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Soil CO2 venting as one of the mechanisms for tolerance of Zn deficiency by rice in flooded soils by Affholder, Marie‐Cecile, Weiss, Dominik J., Wissuwa, Matthias, Johnson‐Beebout, Sarah E., Kirk, Guy J.D.

“…We sought to explain rice (Oryza sativa) genotype differences in tolerance of zinc (Zn) deficiency in flooded paddy soils and the counter‐intuitive…”
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What is a good level of soil organic matter? An index based on organic carbon to clay ratio by Prout, Jonah M., Shepherd, Keith D., McGrath, Steve P., Kirk, Guy J. D., Haefele, Stephan M.

“…Simple measures of appropriate levels of soil organic matter are needed for soil evaluation, management and monitoring, based on readily measurable soil…”
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On allowing for transient variation in end‐member δ13C values in partitioning soil C fluxes from net ecosystem respiration by McCloskey, Christopher S., Otten, Wilfred, Paterson, Eric, Kirk, Guy J. D.

“…The use of stable isotope analysis to resolve ecosystem respiration into its plant and soil components rests on how well the end‐member isotope signatures…”
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A field system for measuring plant and soil carbon fluxes using stable isotope methods by McCloskey, Christopher S., Otten, Wilfred, Paterson, Eric, Ingram, Ben, Kirk, Guy J. D.

“…There is a lack of field methods for measuring plant and soil processes controlling soil organic matter (SOM) turnover over diurnal, seasonal and longer…”
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