Kagera - Bukoba - Tanzania
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Geology

Rubya in Kagera

Kagera is home to shear rock cliffs, interlocking spars, deep valleys, water falls, escarpments and plateaus. Some places are swampy with deposits of water washed pebbles and fertile upper soils from hillsides. There are a variety of rocks including volcanic sedimentary and igneous. There are minerals of various types in the region.

The Region consists of a series of a hills running North to South and parallel to the Lakeshore. Soil in banana growing areas has high iron and clay contents, however, the soil is low in phosphorus and acidity. Nitrogen content is usually low, but to some extent is artificially maintained through the use of inter cropping with legumes and manure. High amounts of rainfall along and near the lakeshore coupled with poor soil management has lead to serious soil erosion problems.

Area
The Region’s geographical coverage of 2,851,300 hectares is divided District wise as follows:

District Total geographical area (ha) Estimated area under cultivation (ha) % if area under cultivation
Bukoba (U & R) 538,600 79,600 14.8
Karagwe 673,400 201,000 19.3
Muleba 344,400 7,295 17.5
Biharamulo 919,900 27,400 3.0
Ngara 374,000 7,200 19.3
Total 2,851,300 440,393 15.5

Source: Kagera Strategic Planning Workshop, June, 9 – 12, 1997.