Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria
Several legumes with high biological nitrogen fixation (BNF) potentials have been studied in on-station trials. The processes involved in BNF and the benefits of these species to crop production need to be evaluated using farmers' management practices in farmers' fields. An on-farm trial with 20 far...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Springer
2005
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/91809 |
| _version_ | 1855535337770582016 |
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| author | Okogun, J. Sanginga, Nteranya Abaidoo, Robert C. Dashiell, Kenton E. Diels, J. |
| author_browse | Abaidoo, Robert C. Dashiell, Kenton E. Diels, J. Okogun, J. Sanginga, Nteranya |
| author_facet | Okogun, J. Sanginga, Nteranya Abaidoo, Robert C. Dashiell, Kenton E. Diels, J. |
| author_sort | Okogun, J. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Several legumes with high biological nitrogen fixation (BNF) potentials have been studied in on-station trials. The processes involved in BNF and the benefits of these species to crop production need to be evaluated using farmers' management practices in farmers' fields. An on-farm trial with 20 farmers was conducted in the northern Guinea savanna (NGS) of Nigeria. The aims were to evaluate the BNF potentials of an improved soybean variety (TGx 1448-2E) and a local variety (Samsoy-2) when inoculated with Bradyrhizobium strains, and of Lablab in farmer-managed and researcher-managed soybean-maize and Lablab-maize crop rotation systems. The level of soil P was generally low with more than 50% of the fields having less than the critical P level. The plant available P content was statistically significantly (P = 0.05) correlated with P in grain (r = 0.60), P in the shoot (r = 0.68), grain yield (r = 0.40) and nodule weight (r = 0.35). Variations in plant parameters (nodulation, shoot dry matter, percentage nitrogen derived from the air [%Ndfa], grain yield, and nutrient uptake) among and within farmers’ fields were attributed to differences in soil fertility and crop management. About 60% of the fields were moderately fertile, sufficient to support legume establishment, while about 30% of the farmers' fields had a low fertility level. For farmers in the study area to benefit from the BNF potentials of the legumes, an external P fertilizer input was necessary as well as suitable crop management practices because all parameters measured in the researcher-managed plots were higher than in the farmer-managed plots. |
| format | Journal Article |
| id | CGSpace91809 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2005 |
| publishDateRange | 2005 |
| publishDateSort | 2005 |
| publisher | Springer |
| publisherStr | Springer |
| record_format | dspace |
| spelling | CGSpace918092024-05-15T05:12:01Z Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria Okogun, J. Sanginga, Nteranya Abaidoo, Robert C. Dashiell, Kenton E. Diels, J. biological nitrogen fixation yield northern guinea savanna soybeans Several legumes with high biological nitrogen fixation (BNF) potentials have been studied in on-station trials. The processes involved in BNF and the benefits of these species to crop production need to be evaluated using farmers' management practices in farmers' fields. An on-farm trial with 20 farmers was conducted in the northern Guinea savanna (NGS) of Nigeria. The aims were to evaluate the BNF potentials of an improved soybean variety (TGx 1448-2E) and a local variety (Samsoy-2) when inoculated with Bradyrhizobium strains, and of Lablab in farmer-managed and researcher-managed soybean-maize and Lablab-maize crop rotation systems. The level of soil P was generally low with more than 50% of the fields having less than the critical P level. The plant available P content was statistically significantly (P = 0.05) correlated with P in grain (r = 0.60), P in the shoot (r = 0.68), grain yield (r = 0.40) and nodule weight (r = 0.35). Variations in plant parameters (nodulation, shoot dry matter, percentage nitrogen derived from the air [%Ndfa], grain yield, and nutrient uptake) among and within farmers’ fields were attributed to differences in soil fertility and crop management. About 60% of the fields were moderately fertile, sufficient to support legume establishment, while about 30% of the farmers' fields had a low fertility level. For farmers in the study area to benefit from the BNF potentials of the legumes, an external P fertilizer input was necessary as well as suitable crop management practices because all parameters measured in the researcher-managed plots were higher than in the farmer-managed plots. 2005-11 2018-03-23T06:48:48Z 2018-03-23T06:48:48Z Journal Article https://hdl.handle.net/10568/91809 en Limited Access Springer Okogun, J., Sanginga, N., Abaidoo, R., Dashiell, K. & Diels, J. (2005). On-farm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria. Nutrient Cycling in Agroecosystems, 73(2-3), 267-275. |
| spellingShingle | biological nitrogen fixation yield northern guinea savanna soybeans Okogun, J. Sanginga, Nteranya Abaidoo, Robert C. Dashiell, Kenton E. Diels, J. Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria |
| title | Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria |
| title_full | Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria |
| title_fullStr | Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria |
| title_full_unstemmed | Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria |
| title_short | Onfarm evaluation of biological nitrogen fixation potential and grain yield of Lablab and two soybean varieties in the northern Guinea savanna of Nigeria |
| title_sort | onfarm evaluation of biological nitrogen fixation potential and grain yield of lablab and two soybean varieties in the northern guinea savanna of nigeria |
| topic | biological nitrogen fixation yield northern guinea savanna soybeans |
| url | https://hdl.handle.net/10568/91809 |
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