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| Titel: |
Evaluation of Strategies for Soil Fertility Improvement in Northern Nigeria and the Way Forward |
| Auteur: |
A.A. Yusuf H.A. Yusuf |
| Verschenen in: |
Journal of agronomy |
| Paginering: | Jaargang 7 (2008) nr. 1 pagina's 15-24 |
| Jaar: |
2008 |
| Inhoud: |
Available literatures on recommended strategies for soil fertility improvement in Northern Nigeria were evaluated. Rapid population growth has made the traditional systems of soil fertility maintenance through bush-fallow both unpopular and non-feasible. The use of animal manure, which has become common since the 1930s, is limited by low nutrient content, due to poor storage and huge quantities required to satisfy crop needs. Green manuring and incorporation of crop residues were recommended to improve soil organic matter content but farmers commonly remove crop residues from the field for livestock feed, fencing, roofing and other purposes. Of all cropping systems, crop rotation involving legumes with high nitrogen fixing capacity has the greatest potential for maintaining soil fertility at reasonable level. Despite the great potential of mineral fertilizers identified in the research institute in 1937 and actual farmers usage in the late 1940s, high prices, unavailability and lack of good market infrastructure have made their application minimal among many smallholder farmers in Nigeria. Several studies have shown that combined use of organic resources supplemented with mineral fertilizers improves soil fertility and produce superior crop yields. This strategy has now shifted towards Integrated Soil Fertility Management (ISFM) which involves various stakeholders in the research and development process due to the realization that farmers` decision making process was not merely driven by the soil and climate but by a whole set of factors cutting across the biophysical, socio-economic and political domain. This approach may provide the much desired solution to soil fertility decline in Northern Nigeria. |
| Uitgever: |
Asian Network for Scientific Information (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 12 van 28 gevonden artikelen
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