Variation in wheat yield and soil properties at different landscape positions, nutrient sources, and rates in the tropical cereal-based cropping systems of Ethiopia
Context There is limited information on how catena features can be used to refine fertiliser recommendations in the undulating landscapes of the east African highlands. Aims (1) Determine the effects of landscape positions and soil types on crop-nutrient responses, and rainwater productivity (RWP);...
| Autores principales: | , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Commonwealth Scientific and Industrial Research Organisation
2024
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/155437 |
| _version_ | 1855526757654855680 |
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| author | Agegnehu, Getachew Woldearegay, Beza Shewangizaw Desta, Gizaw Amede, Tilahun Mekonnen, Kindu Legesse, Gizachew Gashaw, Tadesse Rooyen, Andre F. van Degefu, Tulu Thorne, Peter J. |
| author_browse | Agegnehu, Getachew Amede, Tilahun Degefu, Tulu Desta, Gizaw Gashaw, Tadesse Legesse, Gizachew Mekonnen, Kindu Rooyen, Andre F. van Thorne, Peter J. Woldearegay, Beza Shewangizaw |
| author_facet | Agegnehu, Getachew Woldearegay, Beza Shewangizaw Desta, Gizaw Amede, Tilahun Mekonnen, Kindu Legesse, Gizachew Gashaw, Tadesse Rooyen, Andre F. van Degefu, Tulu Thorne, Peter J. |
| author_sort | Agegnehu, Getachew |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Context
There is limited information on how catena features can be used to refine fertiliser recommendations in the undulating landscapes of the east African highlands.
Aims
(1) Determine the effects of landscape positions and soil types on crop-nutrient responses, and rainwater productivity (RWP); and (2) identify wheat yield-limiting nutrients across landscape positions.
Methods
Two sets of on-farm nutrient management experiments with wheat were conducted on foot slope, mid-slope, and hillslope positions over 71 sites in 2016 and 2019. The first experiment were on Vertisols, Nitisols, Regosols, and Cambisols with different levels of N/P2O5, K2O, and SO4. The second experiment were on Vertisols, Nitisols, and Cambisols with different levels of N/P2O5 and Zn.
Key results
NP increased yield across landscape positions. NP × K and NP × S interactions increased total biomass by 5–76%. Zinc × soil type interaction increased total biomass on Vertisols (6%) and Cambisols (9%), but increasing Zn did not improve yield on Nitisols. Zinc × landscape position interaction increased total biomass at foot slope (2%) and mid-slope (13%) positions. Zinc × NP interaction increased biomass yield on Cambisols, Nitisols, and Vertisols. N138P69 significantly increased RWP at foot slope, mid-slope, and hillslope positions. Soil nutrient and water contents decreased with increasing slope regardless of nutrient source and application rate.
Conclusions
Landscape position may be an indicator for targeting site-specific fertiliser recommendations. Farms on hillslopes could be better ameliorated by applying organic amendments with sustainable land management practices.
Implications
Taking into account landscape position can help better manage fertiliser use on undulating land in the east African highlands. |
| format | Journal Article |
| id | CGSpace155437 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2024 |
| publishDateRange | 2024 |
| publishDateSort | 2024 |
| publisher | Commonwealth Scientific and Industrial Research Organisation |
| publisherStr | Commonwealth Scientific and Industrial Research Organisation |
| record_format | dspace |
| spelling | CGSpace1554372025-12-08T10:29:22Z Variation in wheat yield and soil properties at different landscape positions, nutrient sources, and rates in the tropical cereal-based cropping systems of Ethiopia Agegnehu, Getachew Woldearegay, Beza Shewangizaw Desta, Gizaw Amede, Tilahun Mekonnen, Kindu Legesse, Gizachew Gashaw, Tadesse Rooyen, Andre F. van Degefu, Tulu Thorne, Peter J. wheat yields soil properties soil types rainfed farming nutrient availability landscape Context There is limited information on how catena features can be used to refine fertiliser recommendations in the undulating landscapes of the east African highlands. Aims (1) Determine the effects of landscape positions and soil types on crop-nutrient responses, and rainwater productivity (RWP); and (2) identify wheat yield-limiting nutrients across landscape positions. Methods Two sets of on-farm nutrient management experiments with wheat were conducted on foot slope, mid-slope, and hillslope positions over 71 sites in 2016 and 2019. The first experiment were on Vertisols, Nitisols, Regosols, and Cambisols with different levels of N/P2O5, K2O, and SO4. The second experiment were on Vertisols, Nitisols, and Cambisols with different levels of N/P2O5 and Zn. Key results NP increased yield across landscape positions. NP × K and NP × S interactions increased total biomass by 5–76%. Zinc × soil type interaction increased total biomass on Vertisols (6%) and Cambisols (9%), but increasing Zn did not improve yield on Nitisols. Zinc × landscape position interaction increased total biomass at foot slope (2%) and mid-slope (13%) positions. Zinc × NP interaction increased biomass yield on Cambisols, Nitisols, and Vertisols. N138P69 significantly increased RWP at foot slope, mid-slope, and hillslope positions. Soil nutrient and water contents decreased with increasing slope regardless of nutrient source and application rate. Conclusions Landscape position may be an indicator for targeting site-specific fertiliser recommendations. Farms on hillslopes could be better ameliorated by applying organic amendments with sustainable land management practices. Implications Taking into account landscape position can help better manage fertiliser use on undulating land in the east African highlands. 2024-08-08 2024-10-21T14:45:24Z 2024-10-21T14:45:24Z Journal Article https://hdl.handle.net/10568/155437 en Open Access application/pdf Commonwealth Scientific and Industrial Research Organisation Agegnehu, Getachew, Beza Shewangizaw Woldearegay, Gizaw Desta, Tilahun Amede, Kindu Mekonnen, Gizachew Legesse, Tadesse Gashaw, Andre Van Rooyen, Tulu Degefu, and Peter Thorne. "Variation in wheat yield and soil properties at different landscape positions, nutrient sources, and rates in the tropical cereal-based cropping systems of Ethiopia." Soil Research 62, no. 5 (2024). |
| spellingShingle | wheat yields soil properties soil types rainfed farming nutrient availability landscape Agegnehu, Getachew Woldearegay, Beza Shewangizaw Desta, Gizaw Amede, Tilahun Mekonnen, Kindu Legesse, Gizachew Gashaw, Tadesse Rooyen, Andre F. van Degefu, Tulu Thorne, Peter J. Variation in wheat yield and soil properties at different landscape positions, nutrient sources, and rates in the tropical cereal-based cropping systems of Ethiopia |
| title | Variation in wheat yield and soil properties at different landscape positions, nutrient sources, and rates in the tropical cereal-based cropping systems of Ethiopia |
| title_full | Variation in wheat yield and soil properties at different landscape positions, nutrient sources, and rates in the tropical cereal-based cropping systems of Ethiopia |
| title_fullStr | Variation in wheat yield and soil properties at different landscape positions, nutrient sources, and rates in the tropical cereal-based cropping systems of Ethiopia |
| title_full_unstemmed | Variation in wheat yield and soil properties at different landscape positions, nutrient sources, and rates in the tropical cereal-based cropping systems of Ethiopia |
| title_short | Variation in wheat yield and soil properties at different landscape positions, nutrient sources, and rates in the tropical cereal-based cropping systems of Ethiopia |
| title_sort | variation in wheat yield and soil properties at different landscape positions nutrient sources and rates in the tropical cereal based cropping systems of ethiopia |
| topic | wheat yields soil properties soil types rainfed farming nutrient availability landscape |
| url | https://hdl.handle.net/10568/155437 |
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