Response of maize yield to nitrogen, phosphorus, potassium and sulphur rates on Andosols and Nitisols in Ethiopia
The use of fertilizers in balanced and adequate amounts is a prerequisite for increasing crop productivity and production. Unbalanced plant nutrient management continues to be a major factor contributing to low maize (Zea mays L.) yields due to lack of information on the dose–responses to macronutri...
| Autores principales: | , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Cambridge University Press
2022
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| Acceso en línea: | https://hdl.handle.net/10568/126359 |
| _version_ | 1855525924618895360 |
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| author | Bekele, Israel Lulie, Belstie Habte, Mulugeta Boke, Shiferaw Hailu, Gebreslasie Mariam, Estifanos H. Ahmed, Jemal Seid Abera, Wuletawu Sileshi, Gudeta W. |
| author_browse | Abera, Wuletawu Ahmed, Jemal Seid Bekele, Israel Boke, Shiferaw Habte, Mulugeta Hailu, Gebreslasie Lulie, Belstie Mariam, Estifanos H. Sileshi, Gudeta W. |
| author_facet | Bekele, Israel Lulie, Belstie Habte, Mulugeta Boke, Shiferaw Hailu, Gebreslasie Mariam, Estifanos H. Ahmed, Jemal Seid Abera, Wuletawu Sileshi, Gudeta W. |
| author_sort | Bekele, Israel |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The use of fertilizers in balanced and adequate amounts is a prerequisite for increasing crop productivity and production. Unbalanced plant nutrient management continues to be a major factor contributing to low maize (Zea mays L.) yields due to lack of information on the dose–responses to macronutrients on different soil types in Ethiopia. This study was carried out to quantify maize yield response and agronomic efficiency of varying application rates of nitrogen (N), phosphorus (P), potassium (K) and sulphur (S) under balanced application of other nutrients across two soil types in Ethiopia. Field trials were set up on 29 farmers’ fields in four districts of Oromia and Southern Nations, Nationalities and Peoples Region (SNNPR) for three consecutive cropping seasons (2014–2017). The treatments consisted of six rates of N, P and S each and eight rates of K combined with balanced application of the remaining macronutrients, zinc (Zn) and boron (B). The treatments were laid out in randomised complete blocks design with three replicates per farm. Using nutrient dose–response modelling, the agronomic optimum rates of N, P, K and S were estimated at 46, 40, 17 and 10 kg ha−1 on Nitisols, with balanced application of the other nutrients. On Andosols, the optimum rates of N, P and S were estimated at 184, 20 and 30 kg ha−1, respectively, but the optimum K rate could not be estimated. The predicted maximum yields obtained with balanced nutrient application were lower on Andosols (3397–3640 kg ha−1) than on Nitisols (4630–6094 kg ha−1). Using the Mitscherlich dose–response model, the percentage deficiencies of N, P, K and S were estimated to be 1.3–3.3 times more on Nitisols than Andosols. Consequently, agronomic efficiencies of N, P, K and S were significantly lower on Andosols than on Nitisols. It is concluded that balanced application of 46 kg N ha−1 , 40 kg P ha−1 , 17 kg K ha−1 , 10 kg ha−1 S, 2 kg Zn ha−1 and 0.5 kg B ha−1 could be recommended for maize on Nitisols in the study area. Although this recommendation may also apply to Andosol, further research is needed as the productivity of Andosols appears to be limited by constrains other than N, P, K, S, Zn and B. We also recommend a shift from the blanket fertilizer recommendations to site-specific nutrient management based on good understanding of the variations in crop response with soil type and agroecology and appropriate soil and plant analyses. |
| format | Journal Article |
| id | CGSpace126359 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace1263592025-11-11T18:49:30Z Response of maize yield to nitrogen, phosphorus, potassium and sulphur rates on Andosols and Nitisols in Ethiopia Bekele, Israel Lulie, Belstie Habte, Mulugeta Boke, Shiferaw Hailu, Gebreslasie Mariam, Estifanos H. Ahmed, Jemal Seid Abera, Wuletawu Sileshi, Gudeta W. agronomic characters balanced fertilization nutrient use efficiency características agronómicas abonado equilibrado eficiencia en el uso de los nutrientes The use of fertilizers in balanced and adequate amounts is a prerequisite for increasing crop productivity and production. Unbalanced plant nutrient management continues to be a major factor contributing to low maize (Zea mays L.) yields due to lack of information on the dose–responses to macronutrients on different soil types in Ethiopia. This study was carried out to quantify maize yield response and agronomic efficiency of varying application rates of nitrogen (N), phosphorus (P), potassium (K) and sulphur (S) under balanced application of other nutrients across two soil types in Ethiopia. Field trials were set up on 29 farmers’ fields in four districts of Oromia and Southern Nations, Nationalities and Peoples Region (SNNPR) for three consecutive cropping seasons (2014–2017). The treatments consisted of six rates of N, P and S each and eight rates of K combined with balanced application of the remaining macronutrients, zinc (Zn) and boron (B). The treatments were laid out in randomised complete blocks design with three replicates per farm. Using nutrient dose–response modelling, the agronomic optimum rates of N, P, K and S were estimated at 46, 40, 17 and 10 kg ha−1 on Nitisols, with balanced application of the other nutrients. On Andosols, the optimum rates of N, P and S were estimated at 184, 20 and 30 kg ha−1, respectively, but the optimum K rate could not be estimated. The predicted maximum yields obtained with balanced nutrient application were lower on Andosols (3397–3640 kg ha−1) than on Nitisols (4630–6094 kg ha−1). Using the Mitscherlich dose–response model, the percentage deficiencies of N, P, K and S were estimated to be 1.3–3.3 times more on Nitisols than Andosols. Consequently, agronomic efficiencies of N, P, K and S were significantly lower on Andosols than on Nitisols. It is concluded that balanced application of 46 kg N ha−1 , 40 kg P ha−1 , 17 kg K ha−1 , 10 kg ha−1 S, 2 kg Zn ha−1 and 0.5 kg B ha−1 could be recommended for maize on Nitisols in the study area. Although this recommendation may also apply to Andosol, further research is needed as the productivity of Andosols appears to be limited by constrains other than N, P, K, S, Zn and B. We also recommend a shift from the blanket fertilizer recommendations to site-specific nutrient management based on good understanding of the variations in crop response with soil type and agroecology and appropriate soil and plant analyses. 2022 2022-12-28T09:54:36Z 2022-12-28T09:54:36Z Journal Article https://hdl.handle.net/10568/126359 en Open Access application/pdf Cambridge University Press Bekele, I.; Lulie, B.; Habte, M.; Boke, S.; Hailu, G.; Mariam, E.; Seid Ahmed, Jemal; Abera, Wuletawu; Sileshi, G. (2022) Response of maize yield to nitrogen, phosphorus, potassium and sulphur rates on Andosols and Nitisols in Ethiopia. Experimental Agriculture 58, e11, 17 p. ISSN: 0014-4797 |
| spellingShingle | agronomic characters balanced fertilization nutrient use efficiency características agronómicas abonado equilibrado eficiencia en el uso de los nutrientes Bekele, Israel Lulie, Belstie Habte, Mulugeta Boke, Shiferaw Hailu, Gebreslasie Mariam, Estifanos H. Ahmed, Jemal Seid Abera, Wuletawu Sileshi, Gudeta W. Response of maize yield to nitrogen, phosphorus, potassium and sulphur rates on Andosols and Nitisols in Ethiopia |
| title | Response of maize yield to nitrogen, phosphorus, potassium and sulphur rates on Andosols and Nitisols in Ethiopia |
| title_full | Response of maize yield to nitrogen, phosphorus, potassium and sulphur rates on Andosols and Nitisols in Ethiopia |
| title_fullStr | Response of maize yield to nitrogen, phosphorus, potassium and sulphur rates on Andosols and Nitisols in Ethiopia |
| title_full_unstemmed | Response of maize yield to nitrogen, phosphorus, potassium and sulphur rates on Andosols and Nitisols in Ethiopia |
| title_short | Response of maize yield to nitrogen, phosphorus, potassium and sulphur rates on Andosols and Nitisols in Ethiopia |
| title_sort | response of maize yield to nitrogen phosphorus potassium and sulphur rates on andosols and nitisols in ethiopia |
| topic | agronomic characters balanced fertilization nutrient use efficiency características agronómicas abonado equilibrado eficiencia en el uso de los nutrientes |
| url | https://hdl.handle.net/10568/126359 |
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