http://www.cnr.it/ontology/cnr/individuo/prodotto/ID127198
Soil Fertility and Constraints in Southern Africa Savannah: options and opportunities. (Comunicazione a convegno)
- Type
- Label
- Soil Fertility and Constraints in Southern Africa Savannah: options and opportunities. (Comunicazione a convegno) (literal)
- Anno
- 2003-01-01T00:00:00+01:00 (literal)
- Alternative label
Ristori G.G., D'Acqui L.P. (2003)
Soil Fertility and Constraints in Southern Africa Savannah: options and opportunities.
in Tropical Savannas & Seasonally Dry Forests Conference, Edinburgh, 14-20 Sept 2003
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- Ristori G.G., D'Acqui L.P. (literal)
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- Pagina fine
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- Tropical Savannas & Seasonally Dry Forests Ecology, Environment and Development Edinburgh, September 2003 Abstracts (literal)
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- Istituto per lo Studio degli Ecosistemi CNR - ISE, Via Madonna del Piano, Sesto Fiorentino, Italy (literal)
- Titolo
- Soil Fertility and Constraints in Southern Africa Savannah: options and opportunities. (literal)
- Abstract
- A study at regional scale was undertaken on soils of savanna areas in four Southern Africa Countries i.e., Botswana, Mozambique, South Africa and Zimbabwe. The purpose was to assess the soil status and quality and to identify appropriate strategies of the land uses, farming systems and agronomic practices for a long-term sustainable management of soil resources.
On this basis, the inherent constraints that can affect the sustainability and productivity of ecosystems of selected soil types, under pressure of human activities are described and suitable options for land use and soil management are proposed. Soil types were selected on the basis of their extension in the region (Arenosols and Luvisols) or of their relevance for development of a sustainable and productive farming system (Vertisols).
The outcomes of our analysis show that Arenosols, having a very low inherent fertility are, in general terms, unsuitable for sustainable agriculture.
Susceptible Luvisols can be protected from physical degradation under cultivation by maintaining an adequate level of organic matter in soil, by surface addition of low cost compounds able to promote flocculation of colloidal particles, or better, by protecting the soil from kinetic rain energy with mulch straw or similar materials.
Vertisols are suitable for extensive pasture and, if correctly managed and properly irrigated, for commercial farming, while subsistence farming is difficult because of problems of tillage with hand implements and the soil propensity to waterlog.
A comprehensive graphical synthesis of regional, quantitative distribution in savanna areas of several constraints to soil productivity, depending on inherent soil properties and/or specific local, physical, agro-climatic and environmental features is presented.
The resulting data on limitations to overall soil productivity are expressed in terms of Fertility Capability Soil Classification (FCC) system and Problem Soils identification method.
These figures were obtained mostly by means of maps and data-base from FAO and supported by data derived from literature, and from the previous works of the authors in the region. (literal)
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