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15 cards from this deck
A sustainable resource
Intense rainfall washing away topsoil
Rows of stones across slopes to slow & capture rainwater
10 to 25 metres apart
Less than 2% space; over 50% yield increase
During the dry season
Pits dug through crusted soil in dry season, filled w/ organic matter
November to May
20-40 cm diameter, 10-20 cm deep
12,000 to 25,000 holes
Organic matter: compost, plant litter, animal manure
Ploughing across slopes following contour lines
Creates channels allowing water to flow rapidly downslope
Better soil structure, increased yields, reduced erosion
Sahel terrain is mainly flat
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