The Experts below are selected from a list of 324 Experts worldwide ranked by ideXlab platform
Dugald Close - One of the best experts on this subject based on the ideXlab platform.
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Does biochar influence Soil physical properties and Soil water availability?
Plant and Soil, 2014Co-Authors: Marcus Hardie, Sally Bound, Garth Oliver, Brent Clothier, Dugald CloseAbstract:Aims This study aims to (i) determine the effects of incorporating 47 Mg ha^−1 acacia green waste biochar on Soil physical properties and water relations, and (ii) to explore the different mechanisms by which biochar influences Soil Porosity. Methods The pore size distribution of the biochar was determined by scanning electron microscope and mercury porosimetry. Soil physical properties and water relations were determined by in situ tension infiltrometers, desorption and evaporative flux on intact cores, pressure chamber analysis at −1,500 kPa, and wet aggregate sieving. Results Thirty months after incorporation, biochar application had no significant effect on Soil moisture content, drainable Porosity between –1.0 and −10 kPa, field capacity, plant available water capacity, the van Genuchten Soil water retention parameters, aggregate stability, nor the permanent wilting point. However, the biochar-amended Soil had significantly higher near-saturated hydraulic conductivity, Soil water content at −0.1 kPa, and significantly lower bulk density than the unamended control. Differences were attributed to the formation of large macropores (>1,200 μm) resulting from greater earthworm burrowing in the biochar-amended Soil. Conclusion We found no evidence to suggest application of biochar influenced Soil Porosity by either direct pore contribution, creation of accommodation pores, or improved aggregate stability.
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Does biochar influence Soil physical properties and Soil water availability?
Plant and Soil, 2014Co-Authors: Marcus Hardie, Sally Bound, Garth Oliver, Brent Clothier, Dugald CloseAbstract:This study aims to (i) determine the effects of incorporating 47 Mg ha(-1) acacia green waste biochar on Soil physical properties and water relations, and (ii) to explore the different mechanisms by which biochar influences Soil Porosity. The pore size distribution of the biochar was determined by scanning electron microscope and mercury porosimetry. Soil physical properties and water relations were determined by in situ tension infiltrometers, desorption and evaporative flux on intact cores, pressure chamber analysis at -1,500 kPa, and wet aggregate sieving. Thirty months after incorporation, biochar application had no significant effect on Soil moisture content, drainable Porosity between -1.0 and -10 kPa, field capacity, plant available water capacity, the van Genuchten Soil water retention parameters, aggregate stability, nor the permanent wilting point. However, the biochar-amended Soil had significantly higher near-saturated hydraulic conductivity, Soil water content at -0.1 kPa, and significantly lower bulk density than the unamended control. Differences were attributed to the formation of large macropores (> 1,200 mu m) resulting from greater earthworm burrowing in the biochar-amended Soil. We found no evidence to suggest application of biochar influenced Soil Porosity by either direct pore contribution, creation of accommodation pores, or improved aggregate stability.
Marcus Hardie - One of the best experts on this subject based on the ideXlab platform.
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Does biochar influence Soil physical properties and Soil water availability?
Plant and Soil, 2014Co-Authors: Marcus Hardie, Sally Bound, Garth Oliver, Brent Clothier, Dugald CloseAbstract:Aims This study aims to (i) determine the effects of incorporating 47 Mg ha^−1 acacia green waste biochar on Soil physical properties and water relations, and (ii) to explore the different mechanisms by which biochar influences Soil Porosity. Methods The pore size distribution of the biochar was determined by scanning electron microscope and mercury porosimetry. Soil physical properties and water relations were determined by in situ tension infiltrometers, desorption and evaporative flux on intact cores, pressure chamber analysis at −1,500 kPa, and wet aggregate sieving. Results Thirty months after incorporation, biochar application had no significant effect on Soil moisture content, drainable Porosity between –1.0 and −10 kPa, field capacity, plant available water capacity, the van Genuchten Soil water retention parameters, aggregate stability, nor the permanent wilting point. However, the biochar-amended Soil had significantly higher near-saturated hydraulic conductivity, Soil water content at −0.1 kPa, and significantly lower bulk density than the unamended control. Differences were attributed to the formation of large macropores (>1,200 μm) resulting from greater earthworm burrowing in the biochar-amended Soil. Conclusion We found no evidence to suggest application of biochar influenced Soil Porosity by either direct pore contribution, creation of accommodation pores, or improved aggregate stability.
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Does biochar influence Soil physical properties and Soil water availability?
Plant and Soil, 2014Co-Authors: Marcus Hardie, Sally Bound, Garth Oliver, Brent Clothier, Dugald CloseAbstract:This study aims to (i) determine the effects of incorporating 47 Mg ha(-1) acacia green waste biochar on Soil physical properties and water relations, and (ii) to explore the different mechanisms by which biochar influences Soil Porosity. The pore size distribution of the biochar was determined by scanning electron microscope and mercury porosimetry. Soil physical properties and water relations were determined by in situ tension infiltrometers, desorption and evaporative flux on intact cores, pressure chamber analysis at -1,500 kPa, and wet aggregate sieving. Thirty months after incorporation, biochar application had no significant effect on Soil moisture content, drainable Porosity between -1.0 and -10 kPa, field capacity, plant available water capacity, the van Genuchten Soil water retention parameters, aggregate stability, nor the permanent wilting point. However, the biochar-amended Soil had significantly higher near-saturated hydraulic conductivity, Soil water content at -0.1 kPa, and significantly lower bulk density than the unamended control. Differences were attributed to the formation of large macropores (> 1,200 mu m) resulting from greater earthworm burrowing in the biochar-amended Soil. We found no evidence to suggest application of biochar influenced Soil Porosity by either direct pore contribution, creation of accommodation pores, or improved aggregate stability.
Luis Manuel Valenzuela-núñez - One of the best experts on this subject based on the ideXlab platform.
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CARACTERIZACIÓN DE LA POROSIDAD EDÁFICA COMO INDICADOR DE LA CALIDAD FÍSICA DEL SUELO
Terra Latinoamericana, 2011Co-Authors: José Luis González-barrios, Guillermo González-cervantes, Ignacio Sánchez-cohen, Armando López-santos, Luis Manuel Valenzuela-núñezAbstract:This paper presents the Soil Porosity as a Soil qualityindicator in the Nazas upper watershed. Image analysis techniques determine the size and shape of poro...
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CARACTERIZACIÓN DE LA POROSIDAD EDÁFICA COMO INDICADOR DE LA CALIDAD FÍSICA DEL SUELO Characterization of Soil Porosity as Indicator of Soil Physical Quality
2011Co-Authors: José Luis González-barrios, Guillermo González-cervantes, Ignacio Sánchez-cohen, Armando López-santos, Luis Manuel Valenzuela-núñezAbstract:SUMMARY This paper presents the Soil Porosity as a Soil quality indicator in the Nazas upper watershed. Image analysis techniques determine the size and shape of Porosity that characterize Soil surfaces of forest, grassland and semibare by cattle over grassing. Application of Soil quality criteria allows to associate results of Soil Porosity with potential Soil roles to ensure water storage and water transport. Results show that Soil Porosity is higher in forest and grassland surfaces than in semi-bare surfaces. This potentially allows to a better water caption, water storage and water transport into the Soil profile. Results also show that caution should be taken to prevent semi-bare Soil surfaces by over grassing and cattle trampling because they decrease Soil Porosity and Soil quality. This work shows the importance of Soil Porosity as indicator of Soil quality and the useful technique of image analysis as support tool.
Sally Bound - One of the best experts on this subject based on the ideXlab platform.
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Does biochar influence Soil physical properties and Soil water availability?
Plant and Soil, 2014Co-Authors: Marcus Hardie, Sally Bound, Garth Oliver, Brent Clothier, Dugald CloseAbstract:Aims This study aims to (i) determine the effects of incorporating 47 Mg ha^−1 acacia green waste biochar on Soil physical properties and water relations, and (ii) to explore the different mechanisms by which biochar influences Soil Porosity. Methods The pore size distribution of the biochar was determined by scanning electron microscope and mercury porosimetry. Soil physical properties and water relations were determined by in situ tension infiltrometers, desorption and evaporative flux on intact cores, pressure chamber analysis at −1,500 kPa, and wet aggregate sieving. Results Thirty months after incorporation, biochar application had no significant effect on Soil moisture content, drainable Porosity between –1.0 and −10 kPa, field capacity, plant available water capacity, the van Genuchten Soil water retention parameters, aggregate stability, nor the permanent wilting point. However, the biochar-amended Soil had significantly higher near-saturated hydraulic conductivity, Soil water content at −0.1 kPa, and significantly lower bulk density than the unamended control. Differences were attributed to the formation of large macropores (>1,200 μm) resulting from greater earthworm burrowing in the biochar-amended Soil. Conclusion We found no evidence to suggest application of biochar influenced Soil Porosity by either direct pore contribution, creation of accommodation pores, or improved aggregate stability.
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Does biochar influence Soil physical properties and Soil water availability?
Plant and Soil, 2014Co-Authors: Marcus Hardie, Sally Bound, Garth Oliver, Brent Clothier, Dugald CloseAbstract:This study aims to (i) determine the effects of incorporating 47 Mg ha(-1) acacia green waste biochar on Soil physical properties and water relations, and (ii) to explore the different mechanisms by which biochar influences Soil Porosity. The pore size distribution of the biochar was determined by scanning electron microscope and mercury porosimetry. Soil physical properties and water relations were determined by in situ tension infiltrometers, desorption and evaporative flux on intact cores, pressure chamber analysis at -1,500 kPa, and wet aggregate sieving. Thirty months after incorporation, biochar application had no significant effect on Soil moisture content, drainable Porosity between -1.0 and -10 kPa, field capacity, plant available water capacity, the van Genuchten Soil water retention parameters, aggregate stability, nor the permanent wilting point. However, the biochar-amended Soil had significantly higher near-saturated hydraulic conductivity, Soil water content at -0.1 kPa, and significantly lower bulk density than the unamended control. Differences were attributed to the formation of large macropores (> 1,200 mu m) resulting from greater earthworm burrowing in the biochar-amended Soil. We found no evidence to suggest application of biochar influenced Soil Porosity by either direct pore contribution, creation of accommodation pores, or improved aggregate stability.
Garth Oliver - One of the best experts on this subject based on the ideXlab platform.
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Does biochar influence Soil physical properties and Soil water availability?
Plant and Soil, 2014Co-Authors: Marcus Hardie, Sally Bound, Garth Oliver, Brent Clothier, Dugald CloseAbstract:Aims This study aims to (i) determine the effects of incorporating 47 Mg ha^−1 acacia green waste biochar on Soil physical properties and water relations, and (ii) to explore the different mechanisms by which biochar influences Soil Porosity. Methods The pore size distribution of the biochar was determined by scanning electron microscope and mercury porosimetry. Soil physical properties and water relations were determined by in situ tension infiltrometers, desorption and evaporative flux on intact cores, pressure chamber analysis at −1,500 kPa, and wet aggregate sieving. Results Thirty months after incorporation, biochar application had no significant effect on Soil moisture content, drainable Porosity between –1.0 and −10 kPa, field capacity, plant available water capacity, the van Genuchten Soil water retention parameters, aggregate stability, nor the permanent wilting point. However, the biochar-amended Soil had significantly higher near-saturated hydraulic conductivity, Soil water content at −0.1 kPa, and significantly lower bulk density than the unamended control. Differences were attributed to the formation of large macropores (>1,200 μm) resulting from greater earthworm burrowing in the biochar-amended Soil. Conclusion We found no evidence to suggest application of biochar influenced Soil Porosity by either direct pore contribution, creation of accommodation pores, or improved aggregate stability.
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Does biochar influence Soil physical properties and Soil water availability?
Plant and Soil, 2014Co-Authors: Marcus Hardie, Sally Bound, Garth Oliver, Brent Clothier, Dugald CloseAbstract:This study aims to (i) determine the effects of incorporating 47 Mg ha(-1) acacia green waste biochar on Soil physical properties and water relations, and (ii) to explore the different mechanisms by which biochar influences Soil Porosity. The pore size distribution of the biochar was determined by scanning electron microscope and mercury porosimetry. Soil physical properties and water relations were determined by in situ tension infiltrometers, desorption and evaporative flux on intact cores, pressure chamber analysis at -1,500 kPa, and wet aggregate sieving. Thirty months after incorporation, biochar application had no significant effect on Soil moisture content, drainable Porosity between -1.0 and -10 kPa, field capacity, plant available water capacity, the van Genuchten Soil water retention parameters, aggregate stability, nor the permanent wilting point. However, the biochar-amended Soil had significantly higher near-saturated hydraulic conductivity, Soil water content at -0.1 kPa, and significantly lower bulk density than the unamended control. Differences were attributed to the formation of large macropores (> 1,200 mu m) resulting from greater earthworm burrowing in the biochar-amended Soil. We found no evidence to suggest application of biochar influenced Soil Porosity by either direct pore contribution, creation of accommodation pores, or improved aggregate stability.