Population growth during 1980-1990 ( 48.9 % ) indicates a future need for land . The production technology used by farmers in the area does not preserve natural resources ( soil and water ) , thus leading to their depletion , and so to ...

In effect , the basic problem of agricultural production in the subregion has been one of growing exploitation and expansion ... of fertile valleys into agricultural production , as has been the case in Valle del General in Costa Rica .