SIERRA LEONE maq 4ª.indd - agrilife - Europa
SIERRA LEONE maq 4ª.indd - agrilife - Europa
SIERRA LEONE maq 4ª.indd - agrilife - Europa
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Sierra Leone and is grown by almost 80% of all<br />
small-scale farming households.<br />
The lowlands are cropped with rice on a<br />
more permanent basis, although some shifting<br />
cultivation is also practiced in these areas.<br />
A second crop, normally groundnut and/or<br />
vegetables, is grown during the dry season,<br />
generally on a small portion of the plot. Lowland<br />
labour requirements for swamp rice-cropping<br />
amounts to 309 man-days/ha on average<br />
(MAFFS & MFMR, 2004). The high potential<br />
of crop production in the lowlands is generally<br />
well recognised by farmers. However, because<br />
lowland cropping does not allow for crop<br />
diversification, with corresponding higher labour<br />
requirements, farmers attach more importance<br />
to the upland plot, maintaining the lowland<br />
plot only as a complementary part of their own<br />
farming system. Between the Northern and the<br />
Eastern regions, it may be said that the Eastern<br />
region represents three quarters of the ricecultivated<br />
area of the Northern region.<br />
The lowlands are divided into: inland valley<br />
swamps, bolilands (i.e. naturally grassy drainage<br />
depressions), riverain grassland and mangrove<br />
(used for the cultivation of rice invariably under<br />
flooded conditions).<br />
The Inland Valley Swamps<br />
Inland Valley Swamps (IVS) are encountered<br />
across the country and account for almost<br />
13% of cultivable land and are generally<br />
highly fertile. They are generally narrow,<br />
flat bottomed, seasonally flooded valleys,<br />
varying in size from 10 to 200 hectares.<br />
Typically, valley swamps are drained by<br />
sluggish streams and floods for several<br />
months during the rainy season. They<br />
are ideal for flooded rice cultivation in<br />
the rainy season and some vegetable<br />
production during the dry (FAO, 1996).<br />
More specifically, vegetables include ground<br />
nut or cassava, whose cycle allow to plant<br />
them during the dry season when the water<br />
table drops but remains wet enough to allow<br />
the production of short duration crops. Yet,<br />
some IVS are perennially flooded or at least<br />
remain wet enough to allow for the cropping<br />
of rice multiple times throughout the year.<br />
Thus intensive agricultural production of<br />
food crops is practiced, especially in the<br />
western side of the Northern region and in<br />
urban and peri-urban areas.<br />
The Bolilands<br />
The Bolilands are seasonally flooded<br />
shaped depressions that are found mainly<br />
in the central plains of the Northern region,<br />
especially in the districts of Bombali and<br />
Tonkolili. This ecology accounts for almost<br />
4% of the cultivable land. Their drainage is<br />
very poor and most of the soils are highly<br />
acidic (FAO, 1996). Although inherently poor<br />
in fertility, Bolilands are suitable for large<br />
scale production of rice in the rainy season.<br />
Small scale household rice cultivation is<br />
widespread, but mechanised rice production<br />
is also practiced.<br />
The Riverain Grasslands<br />
The Riverain Grasslands, located in the<br />
Southern region (Bonthe and Pujehun<br />
Districts) on the alluvial flood plains of the<br />
Waanje and Sewa rivers, account for about<br />
2.4% of agricultural lands and are flooded<br />
during the rainy season (FAO, 1996). They<br />
are relatively fertile and suitable for rice<br />
production.<br />
The Mangrove Swamps<br />
Mangrove Swamps are estimated to cover<br />
almost 3% of the usable land along the coast,<br />
being subject to sea water flooding during<br />
the rainy season. During the dry season, the<br />
soil becomes very acid. Fertility is moderate<br />
to medium. Mangrove Swamps are suitable<br />
for rice production, but the crop is subject to<br />
various depths of flooding. Serious diseases<br />
are absent, but weeds are a major problem<br />
as well as damage by crabs (FAO, 1996).<br />
Mangroves are found along the coast in the<br />
districts of Kambia and Port Loko in the North<br />
Rural poverty reduction and food security: The case of smallholders in Sierra Leone<br />
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