4. RESULTS AND DISCUSSIONS
4.1 The Suitability maps
The suitability map resulting from the spatial overlay of the land qualities for rice, sugar-cane,
cassava and rubber tree are shown in Fig. 3 The suitability area in addition to the spatial information of
the crops is shown in Table 2. The study provides the overall insight into each land quality for crops and
the suitability resulting from the integrations of the land qualities spatially and quantitatively. It is
evident from the study that land suitability for cassava covers over 38% of the area for highly and
moderately suitable land.
The high suitability land for rice, sugar-cane, cassava and rubber tree cover areas of about
7.54, 8.81, 19.29 and 3.60% respectively (table 2). The conservation areas cover extensively in the
dissected erosion surface and mountainous area where the land slope is evident. For the conservation
requirements, the legal forest reserves are not covered by this assessment. The information obtained
were further analyzed in the second stage to prepare the land unit for the crop combination.
Cassava and sugar-cane are the combination crops that normally occupy the upper terraces of
well drained soils. With this information, the alternatives for agricultural land use are dynamic and
varied according to the cost
benefit analysis of the
combination normally the
low inputs of cropping
factors and high return with
the sustainability of land are
recommended. To make
any decision, it is necessary
to develop alternatives for
the areas that require
methods of selection.