Assessing the Effect of Residue Quantity and Quality, and Water Conservation on Maize Productivity and Nitrogen Dynamics on Smallholder Farms in Malawi
Many soils on smallholder farms in Malawi have poor soil organic matter content. This results in poor maize productivity when sufficient mineral fertilizers are not added. Building soil organic matter requires improving both cereal and legume crops primary productivity through mineral fertilizers, a...
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| Formato: | Conjunto de datos |
| Lenguaje: | Inglés |
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International Food Policy Research Institute
2023
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| Acceso en línea: | https://hdl.handle.net/10568/145280 |
| _version_ | 1855541700239294464 |
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| author | International Institute of Tropical Agriculture |
| author_browse | International Institute of Tropical Agriculture |
| author_facet | International Institute of Tropical Agriculture |
| author_sort | International Institute of Tropical Agriculture |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Many soils on smallholder farms in Malawi have poor soil organic matter content. This results in poor maize productivity when sufficient mineral fertilizers are not added. Building soil organic matter requires improving both cereal and legume crops primary productivity through mineral fertilizers, and retaining the associated crop residues on the cropped lands. These residues decompose to provide mineral N to crops grown in sequence, as well as being an important source for SOM capitalization. Residues of legumes crops have a narrow C/N ration and are hypothesized to improve N cycling and benefit the rotational crop, whereas residues of maize, which have a wide C/N ratio, promote immobilization. While this knowledge is widely known, what is not clear is the interaction between crop residue quality, quantity and soil water management on maize productivity and mineral N dynamics. The data will address the following:
1. Does incorporating soil water enhancing technologies increase/reduce the immobilization potential of maize residues?
2. What is the effect of varying the quantity of the crop residues incorporated (both maize and legumes) on mineral N dynamics, soil water content and maize productivity
3. For farmers with limited fertilizer use (50% NP), how detrimental is use of maize residues (X0, X1, X2), with or without water conservation measures
4. What is the fertilizer substitution value of different quantity residues generated from a groundnut/pigeonpea doubled up system?
This data is for the residue generation phase. |
| format | Conjunto de datos |
| id | CGSpace145280 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2023 |
| publishDateRange | 2023 |
| publishDateSort | 2023 |
| publisher | International Food Policy Research Institute |
| publisherStr | International Food Policy Research Institute |
| record_format | dspace |
| spelling | CGSpace1452802025-04-17T08:26:54Z Assessing the Effect of Residue Quantity and Quality, and Water Conservation on Maize Productivity and Nitrogen Dynamics on Smallholder Farms in Malawi International Institute of Tropical Agriculture soil organic matter crop residues soil water content crop rotation smallholder farmers fertilizers legumes Many soils on smallholder farms in Malawi have poor soil organic matter content. This results in poor maize productivity when sufficient mineral fertilizers are not added. Building soil organic matter requires improving both cereal and legume crops primary productivity through mineral fertilizers, and retaining the associated crop residues on the cropped lands. These residues decompose to provide mineral N to crops grown in sequence, as well as being an important source for SOM capitalization. Residues of legumes crops have a narrow C/N ration and are hypothesized to improve N cycling and benefit the rotational crop, whereas residues of maize, which have a wide C/N ratio, promote immobilization. While this knowledge is widely known, what is not clear is the interaction between crop residue quality, quantity and soil water management on maize productivity and mineral N dynamics. The data will address the following: 1. Does incorporating soil water enhancing technologies increase/reduce the immobilization potential of maize residues? 2. What is the effect of varying the quantity of the crop residues incorporated (both maize and legumes) on mineral N dynamics, soil water content and maize productivity 3. For farmers with limited fertilizer use (50% NP), how detrimental is use of maize residues (X0, X1, X2), with or without water conservation measures 4. What is the fertilizer substitution value of different quantity residues generated from a groundnut/pigeonpea doubled up system? This data is for the residue generation phase. 2023-10-10 2024-06-15T02:35:37Z 2024-06-15T02:35:37Z Dataset https://hdl.handle.net/10568/145280 en https://doi.org/10.1016/j.fcr.2021.108225 Open Access International Food Policy Research Institute International Institute of Tropical Agriculture (IITA). 2023. Assessing the Effect of Residue Quantity and Quality, and Water Conservation on Maize Productivity and Nitrogen Dynamics on Smallholder Farms in Malawi. Washington, DC: International Food Policy Research Institute (IFPRI) [dataset]. https://doi.org/10.7910/DVN/1A6WMD. Harvard Dataverse. Version 1. |
| spellingShingle | soil organic matter crop residues soil water content crop rotation smallholder farmers fertilizers legumes International Institute of Tropical Agriculture Assessing the Effect of Residue Quantity and Quality, and Water Conservation on Maize Productivity and Nitrogen Dynamics on Smallholder Farms in Malawi |
| title | Assessing the Effect of Residue Quantity and Quality, and Water Conservation on Maize Productivity and Nitrogen Dynamics on Smallholder Farms in Malawi |
| title_full | Assessing the Effect of Residue Quantity and Quality, and Water Conservation on Maize Productivity and Nitrogen Dynamics on Smallholder Farms in Malawi |
| title_fullStr | Assessing the Effect of Residue Quantity and Quality, and Water Conservation on Maize Productivity and Nitrogen Dynamics on Smallholder Farms in Malawi |
| title_full_unstemmed | Assessing the Effect of Residue Quantity and Quality, and Water Conservation on Maize Productivity and Nitrogen Dynamics on Smallholder Farms in Malawi |
| title_short | Assessing the Effect of Residue Quantity and Quality, and Water Conservation on Maize Productivity and Nitrogen Dynamics on Smallholder Farms in Malawi |
| title_sort | assessing the effect of residue quantity and quality and water conservation on maize productivity and nitrogen dynamics on smallholder farms in malawi |
| topic | soil organic matter crop residues soil water content crop rotation smallholder farmers fertilizers legumes |
| url | https://hdl.handle.net/10568/145280 |
| work_keys_str_mv | AT internationalinstituteoftropicalagriculture assessingtheeffectofresiduequantityandqualityandwaterconservationonmaizeproductivityandnitrogendynamicsonsmallholderfarmsinmalawi |