Abstract
Irrigation schedules are discussed, focusing on crop rotation types recently introduced in the Shavour Areas located in the central parts of Khuzestan Province in Iran. The design is based on guidelines provided by the Ministry of Agriculture, Forestry and Fisheries of Japan. The farm pond irrigation system is applied in the fields of 300ha irrigated by existing diversion dams constructed in the Shavour River, and are designed under conditions of (1) four variations of amounts of river water resources, (2) economical volumes of the farm pond, (3) three types of crop rotation and (4) two cultivation types which show the monocultured and mixed cultured crop patterns per village. In the fields not irrigated from the Shavour River, the small size of irrigation system with pond and water harvesting apron is applied in the traditional cultivation fields of 300m2, and are designed under conditions of (1) harvesting water efficiency of 80% and application efficiency of 60% and (2) daily irrigation interval and designed irrigation intervals estimated by the soil moisture depletion method.
