The mountain soils are complex and extremely varied.
The soils vary from deep alluvium in the river basins and lower slopes to highly immature residual gravelly on higher altitudes.
Because of complex topographic, geologic, vegetation and climatic conditions, no large areas of homogenous soil groups are found.
Areas of steep relief are mostly devoid of soil.
Various types of crops are grown in different regions like rice in valley, orchards on slopes and potato in almost all areas.
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