Determination of irrigation water requirement for Grape and Dragon fruit in Southern Central zone by drip irrigation

Abstract

     In order to improve agricultural development in the Southern Provinces of Central region, Chainging low to high economy value crops and applying advance technology as farming practices and micro-irrigation technic are policy of Ministry of Agriculture and Rural Development. The results of field experience on determination of irrigarion requirement for grap in Ninh Thuan Province and dragon fruit in Binh Thuan province by drip irrigation technic shows that soil moisture available for grap development is from 70 to 100% of field capacity, irrigation time is from 15 to 18 times, volume of each irrigation is from 65 to 82 Cu.m/ha. And irrigation pocedure by drip was determined for Winter-Spring; Summer-Autumn; and Autumn - Winter crops. Soil moisture available for dragon frut development is from 60 to 100% of field capacity, irrigation time in a crop is from 32 to 88 times, total volume of wter irrigation in a crop is from 1234 to 2762 Cu.m/ha. And irrigation pocedure by drip for dragon frut was determined. Key words: Irrigation requirement; Soil moisture; Soil moisture avalable; Irrigation times; water volume of each irrigation; Total irrigation water volume.