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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 />

47

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