Promote soil fertility management techniques. in the context of crop production. (2) Implementation of techniques for maintaining soil fertility over an area of 500,000 ha / year. 100 000 ha / an. 400 000 ha / an. Promote hydro-agricultural developments. (3) Development of 96,500 ha of agricultural land and construction of 180 water reservoirs. 48,250 ha of developed farmland and 90 water reservoirs built.