| 来源类型 | Article and other Publication |
| 规范类型 | 其他 |
| Financial performance of fertilization strategies for sustainable soil fertility management in Sudano–Sahelian West Africa 2: profitability of long-term capital investments in rockphosphate | |
| Lamers, John P. A.; Michael Brüntrup; Andreas Buerkert | |
| 出版年 | 2015 |
| 摘要 | Phosphorus (P) deficiency is a major impediment to securing crop productivity on the acid, sandy soils of Sudano-Sahelian West Africa (SSWA). However, given the low profitability of many annually applied fertilization strategies with imported P, the effects of yield-enhancing, alternative P-sources, such as rockphosphate (RP), should be considered. Therefore, the financial performance of 14 strategies – including 2 annual and 11 long-term fertilization strategies plus 1 farmers’ practice – were compared in three rainfall zones in SSWA. The comparison comprised the net present value, the annuity, the internal rate of return, and a risk analysis. Agronomic data came from a four-year, five-location trial complemented by information on farming systems, labor demands, and input-output prices. Compared with farmers’ practices, none of the P-fertilization strategies were financially superior at all locations. The financial performance of medium-term RP-strategies tended to increase with rainfall, but remained highly variable. Net returns on land with high rates of RP were often superior to annual inputs of mineral-P, but never the best alternatives. In most cases, the most profitable strategies comprised medium-level RP-applications with or without supplementary hill-placed NPK-fertilizer (also known as “micro-dosing”). The financial performance of medium quantities of RP sometimes increased and sometimes decreased with supplementary nitrogen (N) additions. The combination of hill-placed NPK and broadcast RP as well as N-applications with broadcast RP are alternatives to the use of RP alone. Our results can assist researchers and development institutions in advocating and implementing more effective strategies to enhance agricultural production in SSWA. |
| URL | https://www.die-gdi.de/en/others-publications/article/financial-performance-of-fertilization-strategies-for-sustainable-soil-fertility-management-in-sudano-sahelian-west-africa-2-profitability-of-long-term-capital-investments-in-rockphosphate/ |
| 来源智库 | German Development Institute (Germany) |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/498723 |
| 推荐引用方式 GB/T 7714 | Lamers, John P. A.,Michael Brüntrup,Andreas Buerkert. Financial performance of fertilization strategies for sustainable soil fertility management in Sudano–Sahelian West Africa 2: profitability of long-term capital investments in rockphosphate. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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