|Author:||Arabzadeh, B. ; Reza Tavakoli, A.|
|Book Group Author:||NA|
A field experiment investigated the effects of deficit irrigation management on the yield of transplanted rice (Tarom variety). Seven irrigation management treatments were studied in a randomized complete block design (RCBD) with three replications. The results showed that maximum net benefit per unit water use and maximum benefit-cost ratio (2.24) were obtained with a 42% reduction of water use for the cost of a 10% reduction in yield. The limit of benefit for optimum level of deficit irrigation management occurred when the total costs of water and irrigation were 0.29 US$/m3. Also it is not necessary to maintain submergence over the whole growth period. Using this method, it is possible to increase productivity of irrigated fields without noticeable yield reductions.
|Journal:||Transactions of the 19th International Congress on Irrigationand Drainage, Beijing, China, 2005. Vol 1A: Improving water and landmanagement for increasing efficiency in irrigated agriculture|
cost benefit analysis, crop yield, field tests, irrigatedfarming, irrigation systems, rice, submergence, water costs, waterdeficit, water use efficiency, Oryza sativa, Oryza, Poaceae, Cyperales,monocotyledons, angiosperms, Spermatophyta, plants, deficit irrigation,paddy, water productivity, water saving, Soil Water Management(Irrigation and Drainage) (JJ800) (Revised June 2002) [formerly SoilWater Management], Plant Water Relations (FF062), Plant Production(FF100), Natural Resource Economics (EE115) (New March 2000), SoilFertility (JJ600)