The Experts below are selected from a list of 87 Experts worldwide ranked by ideXlab platform
B G Sims - One of the best experts on this subject based on the ideXlab platform.
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Draft Animal Power for Soil and Water Conservation in the Bolivian Valleys
Agricultural Engineering International: The CIGR Journal, 2003Co-Authors: B G SimsAbstract:The inter-Andean valley region of Bolivia presents climatic characteristics which can be described as high, dry and cool. The prolonged dry season (up to eight months) can lead to severe forage shortages which affect working Animals. The traditional Draft Animals are pairs of oxen which may have to be sold off at the end of the working season due to lack of feed. Production of forage and the possibility of using lighter, single Animals are two ways to alleviate the situation. Natural resource management projects in the region, working in very close collaboration with farm families in programs of participatory development, have developed contour-planted live-barriers of grass / legume mixtures to stabilize steep hillsides and provide abundant and nutritious dry-season forage. The development of high-lift harnesses and lightweight equipment has enabled hitherto underutilized single equines (and bovines) to undertake Draft work traditionally the exclusive domain of pairs of oxen.
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The Role of Draft Animal Power in Soil and Water Conservation
Conservation Agriculture, 2003Co-Authors: B G Sims, D. H. O’neillAbstract:Draft Animal power (DAP) is fundamental to many small-holder farming systems in developing countries. Participatory research projects in Bolivia and Zimbabwe are investigating the use of this power source to develop soil and water conservation technologies for marginal farmers in semi-arid conditions. Work in Bolivia combines contour barriers of forage species with the use of single work Animals on the forming terraces. High-lift harnesses and lightweight implements diversify the use of equids. Other conservation innovations in the area include winged chisel plows, tied ridgers and direct seeders. Work in Zimbabwe has also developed light-weight implements and contributed to the promotion of donkey power. Conservation tillage practices (no-till, ripping, mulching) have been evaluated with respect to their requirements and benefits and have been found suitable for adoption by smallholders provided they have adequate DAP. More on-farm trials in different conditions are needed to demonstrate the benefits more widely.
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Draft Animal Power for Soil and Water Conservation in Small-Holder Production Systems in the Inter-Andean Valleys of Bolivia
2002 Chicago IL July 28-31 2002, 2002Co-Authors: B G SimsAbstract:The inter-Andean valley region of Bolivia presents climatic characteristics which can be described as high, dry and cool. The prolonged dry season (up to eight months) can lead to severe forage shortages which affect working Animals. The traditional Draft Animals are pairs of oxen which may have to be sold off at the end of the working season due to lack of feed. Production of forage and the possibility of using lighter, single Animals are two ways to alleviate the situation. Natural resource management projects in the region, working in very close collaboration with farm families in programs of participatory development, have developed contour-planted live-barriers of grass / legume mixtures to stabilize steep hillsides and provide abundant and nutritious dry-season forage. The development of high-lift harnesses and lightweight equipment has enabled hitherto underutilized single equines (and bovines) to undertake Draft work traditionally the exclusive domain of pairs of oxen.
Zulimar Hernández - One of the best experts on this subject based on the ideXlab platform.
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Comparing effects of tillage treatments performed with Animal traction on soil physical properties and soil electrical resistivity: preliminary experimental results
Open Agriculture, 2017Co-Authors: Aitor García-tomillo, Tomás De Figueiredo, Arlindo Almeida, Jorge Dafonte Dafonte, João P. Nunes, João Rodrigues, Zulimar HernándezAbstract:AbstractSoil Compaction results from compressive forces applied to compressible soil by machinery wheels, combined with tillage operations. Draft Animal‐pulled equipment may also cause soil compaction, but a huge gap exists on experimental data to adequately assess their impacts and, actually, Animal traction is an option seen with increasing potential to contribute to sustainable agriculture, especially in mountain areas. This study was conducted to assess the impacts on soil compaction of tillage operations with motor tractor and Draft Animals. In a farm plot (Vale de Frades, NE Portugal) treatments were applied in sub‐plots (30 m × 3 m), consisting in a two way tillage with tractor (T), a pair of cows (C) and a pair of donkeys (D). Undisturbed soil samples (120) were taken before and after operations for bulk density (BD) and saturated hydraulic conductivity (Ks). The relative changes in BD observed after tillage in the 0-0.05 m soil depth increased after operations in all treatments. The increase was higher in the tractor sub-plot (15%) than in those where Animal traction was used (8%). Before operation Ks class was rapid and fast in all samples, and after operation this value was reduced to 33% in T, whereas it reached 83% in C. Electrical Resistivity Tomography (ERT) was useful as a tool to identify the alterations caused by tillage operations on soil physical status. These preliminary results confirm the potential of Animal traction as an option for mountain agri‐environments, yet it requires much wider research to soundly ground its assets.
Hernández Zulimar - One of the best experts on this subject based on the ideXlab platform.
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Comparing effects of tillage treatments performed with Animal traction on soil physical properties and soil electrical resistivity: preliminary experimental results
'Walter de Gruyter GmbH', 2017Co-Authors: Garcia-tomillo Aitor, Tomás De Figueiredo, Almeida Arlindo, Rodrigues, João Brandão, Dafonte Dafonte Jorge, Paz-gonzález António, Nunes João, Hernández ZulimarAbstract:Soil Compaction results from compressive forces applied to compressible soil by machinery wheels, combined with tillage operations. Draft Animal‐pulled equipment may also cause soil compaction, but a huge gap exists on experimental data to adequately assess their impacts and, actually, Animal traction is an option seen with increasing potential to contribute to sustainable agriculture, especially in mountain areas. This study was conducted to assess the impacts on soil compaction of tillage operations with motor tractor and Draft Animals. In a farm plot (Vale de Frades, NE Portugal) treatments were applied in sub‐plots (30 m x 3 m), consisting in a two way tillage with tractor (T), a pair of cows (C) and a pair of donkeys (D). Undisturbed soil samples (120) were taken before and after operations for bulk density (BD) and saturated hydraulic conductivity (Ks). The relative changes in BD observed after tillage in the 0-0.05 m soil depth increased after operations in all treatments. The increase was higher in the tractor sub-plot (15%) than in those where Animal traction was used (8%). Before operation Ks class was rapid and fast in all samples, and after operation this value was reduced to 33% in T, whereas it reached 83% in C. Electrical Resistivity Tomography (ERT) was useful as a tool to identify the alterations caused by tillage operations on soil physical status. These preliminary results confirm the potential of Animal traction as an option for mountain agri‐environments, yet it requires much wider research to soundly ground its assets.Authors wish to acknowledge the most relevant contribution of the farmers of Vale de Frades involved in the experiment, for their enthusiasm and refined performance in the field, accepting to freely provide their time, their work and their Draft Animals to carry out the required operations.info:eu-repo/semantics/publishedVersio
Tomás De Figueiredo - One of the best experts on this subject based on the ideXlab platform.
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Comparing effects of tillage treatments performed with Animal traction on soil physical properties and soil electrical resistivity: preliminary experimental results
Open Agriculture, 2017Co-Authors: Aitor García-tomillo, Tomás De Figueiredo, Arlindo Almeida, Jorge Dafonte Dafonte, João P. Nunes, João Rodrigues, Zulimar HernándezAbstract:AbstractSoil Compaction results from compressive forces applied to compressible soil by machinery wheels, combined with tillage operations. Draft Animal‐pulled equipment may also cause soil compaction, but a huge gap exists on experimental data to adequately assess their impacts and, actually, Animal traction is an option seen with increasing potential to contribute to sustainable agriculture, especially in mountain areas. This study was conducted to assess the impacts on soil compaction of tillage operations with motor tractor and Draft Animals. In a farm plot (Vale de Frades, NE Portugal) treatments were applied in sub‐plots (30 m × 3 m), consisting in a two way tillage with tractor (T), a pair of cows (C) and a pair of donkeys (D). Undisturbed soil samples (120) were taken before and after operations for bulk density (BD) and saturated hydraulic conductivity (Ks). The relative changes in BD observed after tillage in the 0-0.05 m soil depth increased after operations in all treatments. The increase was higher in the tractor sub-plot (15%) than in those where Animal traction was used (8%). Before operation Ks class was rapid and fast in all samples, and after operation this value was reduced to 33% in T, whereas it reached 83% in C. Electrical Resistivity Tomography (ERT) was useful as a tool to identify the alterations caused by tillage operations on soil physical status. These preliminary results confirm the potential of Animal traction as an option for mountain agri‐environments, yet it requires much wider research to soundly ground its assets.
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Comparing effects of tillage treatments performed with Animal traction on soil physical properties and soil electrical resistivity: preliminary experimental results
'Walter de Gruyter GmbH', 2017Co-Authors: Garcia-tomillo Aitor, Tomás De Figueiredo, Almeida Arlindo, Rodrigues, João Brandão, Dafonte Dafonte Jorge, Paz-gonzález António, Nunes João, Hernández ZulimarAbstract:Soil Compaction results from compressive forces applied to compressible soil by machinery wheels, combined with tillage operations. Draft Animal‐pulled equipment may also cause soil compaction, but a huge gap exists on experimental data to adequately assess their impacts and, actually, Animal traction is an option seen with increasing potential to contribute to sustainable agriculture, especially in mountain areas. This study was conducted to assess the impacts on soil compaction of tillage operations with motor tractor and Draft Animals. In a farm plot (Vale de Frades, NE Portugal) treatments were applied in sub‐plots (30 m x 3 m), consisting in a two way tillage with tractor (T), a pair of cows (C) and a pair of donkeys (D). Undisturbed soil samples (120) were taken before and after operations for bulk density (BD) and saturated hydraulic conductivity (Ks). The relative changes in BD observed after tillage in the 0-0.05 m soil depth increased after operations in all treatments. The increase was higher in the tractor sub-plot (15%) than in those where Animal traction was used (8%). Before operation Ks class was rapid and fast in all samples, and after operation this value was reduced to 33% in T, whereas it reached 83% in C. Electrical Resistivity Tomography (ERT) was useful as a tool to identify the alterations caused by tillage operations on soil physical status. These preliminary results confirm the potential of Animal traction as an option for mountain agri‐environments, yet it requires much wider research to soundly ground its assets.Authors wish to acknowledge the most relevant contribution of the farmers of Vale de Frades involved in the experiment, for their enthusiasm and refined performance in the field, accepting to freely provide their time, their work and their Draft Animals to carry out the required operations.info:eu-repo/semantics/publishedVersio
Aitor García-tomillo - One of the best experts on this subject based on the ideXlab platform.
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Comparing effects of tillage treatments performed with Animal traction on soil physical properties and soil electrical resistivity: preliminary experimental results
Open Agriculture, 2017Co-Authors: Aitor García-tomillo, Tomás De Figueiredo, Arlindo Almeida, Jorge Dafonte Dafonte, João P. Nunes, João Rodrigues, Zulimar HernándezAbstract:AbstractSoil Compaction results from compressive forces applied to compressible soil by machinery wheels, combined with tillage operations. Draft Animal‐pulled equipment may also cause soil compaction, but a huge gap exists on experimental data to adequately assess their impacts and, actually, Animal traction is an option seen with increasing potential to contribute to sustainable agriculture, especially in mountain areas. This study was conducted to assess the impacts on soil compaction of tillage operations with motor tractor and Draft Animals. In a farm plot (Vale de Frades, NE Portugal) treatments were applied in sub‐plots (30 m × 3 m), consisting in a two way tillage with tractor (T), a pair of cows (C) and a pair of donkeys (D). Undisturbed soil samples (120) were taken before and after operations for bulk density (BD) and saturated hydraulic conductivity (Ks). The relative changes in BD observed after tillage in the 0-0.05 m soil depth increased after operations in all treatments. The increase was higher in the tractor sub-plot (15%) than in those where Animal traction was used (8%). Before operation Ks class was rapid and fast in all samples, and after operation this value was reduced to 33% in T, whereas it reached 83% in C. Electrical Resistivity Tomography (ERT) was useful as a tool to identify the alterations caused by tillage operations on soil physical status. These preliminary results confirm the potential of Animal traction as an option for mountain agri‐environments, yet it requires much wider research to soundly ground its assets.