Lowland rice yield and profit response to fertilizer application in Rwanda
Rice (Oryza sativa ) production in Rwanda increased by 70% while yield ha−1 decreased during the past decade. Yield has biotic and abiotic constraints including inadequate nutrient supply. Yield response functions for N, P, and K were determined in eight marshlands grouped into four clusters. Additi...
| Autores principales: | , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Wiley
2020
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/108806 |
| _version_ | 1855513796536172544 |
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| author | Nabahungu, N.L. Cyamweshi, A.R. Kayumba, J. Kokou, K. Mukuralinda, Athanase Cirhuza, J.M. Wortmann, Charles S. |
| author_browse | Cirhuza, J.M. Cyamweshi, A.R. Kayumba, J. Kokou, K. Mukuralinda, Athanase Nabahungu, N.L. Wortmann, Charles S. |
| author_facet | Nabahungu, N.L. Cyamweshi, A.R. Kayumba, J. Kokou, K. Mukuralinda, Athanase Cirhuza, J.M. Wortmann, Charles S. |
| author_sort | Nabahungu, N.L. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Rice (Oryza sativa ) production in Rwanda increased by 70% while yield ha−1 decreased during the past decade. Yield has biotic and abiotic constraints including inadequate nutrient supply. Yield response functions for N, P, and K were determined in eight marshlands grouped into four clusters. Additional treatment allowed for the diagnosis of response to Mg–S–Zn–B (MgSZnB). Rice grain yield with no fertilizer applied was 2.27 Mg ha−1. Mean yield increases were 2.35, 1.53, and 1.71 Mg ha−1 with N, P, and K application, respectively. The mean economically optimal rates (EOR) were 58 to >150, 11–30, and 21–35 kg ha−1 for N, P, and K, respectively, depending on cluster and the cost of fertilizer. Yield responses to nutrient rates were similar across marshland clusters, and a single response function for each of P and K can serve all four clusters, while the response to N differed for Cluster B compared with A, BC, and C. Net returns to applied P and K were greater than for N, but the application of N is likely needed for such responses to P and K. The MgSZnB resulted in a mean grain yield increase of 1.72 Mg ha−1 with increases in all marshlands, but the information was not sufficient to determine which nutrients of MgSZnB were deficient or their optimal application rates. Fertilizer use can be very profitable for rice production in Rwanda. Profit can be enhanced with the application at less than EOR when fertilizer use is financially constrained. |
| format | Journal Article |
| id | CGSpace108806 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace1088062025-11-11T10:01:07Z Lowland rice yield and profit response to fertilizer application in Rwanda Nabahungu, N.L. Cyamweshi, A.R. Kayumba, J. Kokou, K. Mukuralinda, Athanase Cirhuza, J.M. Wortmann, Charles S. oryza sativa rwanda yields profit costs fertilizer application Rice (Oryza sativa ) production in Rwanda increased by 70% while yield ha−1 decreased during the past decade. Yield has biotic and abiotic constraints including inadequate nutrient supply. Yield response functions for N, P, and K were determined in eight marshlands grouped into four clusters. Additional treatment allowed for the diagnosis of response to Mg–S–Zn–B (MgSZnB). Rice grain yield with no fertilizer applied was 2.27 Mg ha−1. Mean yield increases were 2.35, 1.53, and 1.71 Mg ha−1 with N, P, and K application, respectively. The mean economically optimal rates (EOR) were 58 to >150, 11–30, and 21–35 kg ha−1 for N, P, and K, respectively, depending on cluster and the cost of fertilizer. Yield responses to nutrient rates were similar across marshland clusters, and a single response function for each of P and K can serve all four clusters, while the response to N differed for Cluster B compared with A, BC, and C. Net returns to applied P and K were greater than for N, but the application of N is likely needed for such responses to P and K. The MgSZnB resulted in a mean grain yield increase of 1.72 Mg ha−1 with increases in all marshlands, but the information was not sufficient to determine which nutrients of MgSZnB were deficient or their optimal application rates. Fertilizer use can be very profitable for rice production in Rwanda. Profit can be enhanced with the application at less than EOR when fertilizer use is financially constrained. 2020-03 2020-07-17T13:23:30Z 2020-07-17T13:23:30Z Journal Article https://hdl.handle.net/10568/108806 en Open Access application/pdf Wiley Nabahungu, N.L., Cyamweshi, A.R., Kayumba, J., Kokou, K., Mukuralinda, A., Cirhuza, J.M. & Wortmann, C.S. (2020). Lowland rice yield and profit response to fertilizer application in Rwanda. Agronomy Journal, 112(2), 1423-1432. |
| spellingShingle | oryza sativa rwanda yields profit costs fertilizer application Nabahungu, N.L. Cyamweshi, A.R. Kayumba, J. Kokou, K. Mukuralinda, Athanase Cirhuza, J.M. Wortmann, Charles S. Lowland rice yield and profit response to fertilizer application in Rwanda |
| title | Lowland rice yield and profit response to fertilizer application in Rwanda |
| title_full | Lowland rice yield and profit response to fertilizer application in Rwanda |
| title_fullStr | Lowland rice yield and profit response to fertilizer application in Rwanda |
| title_full_unstemmed | Lowland rice yield and profit response to fertilizer application in Rwanda |
| title_short | Lowland rice yield and profit response to fertilizer application in Rwanda |
| title_sort | lowland rice yield and profit response to fertilizer application in rwanda |
| topic | oryza sativa rwanda yields profit costs fertilizer application |
| url | https://hdl.handle.net/10568/108806 |
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