Univrsity Of Tehran Press Water and Irrigation Management 2251-6298 8 2 2018 09 23 Investigation the effect of deficit irrigation on root distribution and vegetative growth of Rosmarinus Officinalis L. Investigation the effect of deficit irrigation on root distribution and vegetative growth of Rosmarinus Officinalis L. 289 301 71009 10.22059/jwim.2019.271640.650 FA Rasoul Asadi PhD student, Water Engineering Department, Faculty of Water and Soil, Zabol University Farzad Hassan Pour Associate Professor, Water Engineering Department, Faculty of Water and Soil, Zabol University Mitra Mehrabani Department of Pharmacognozy, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran Amin Baghizadeh Associate Professor, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology Fateme Karandish Associate Professor, Water Engineering Department, Faculty of Water and Soil, Zabol University Journal Article 2018 12 19 In order to investigation the root distribution and plant growth of Rosmarinus Officinalis L., an experiment was conducted in a completely randomized design with three replications under using subsurface irrigation system in 2016. In this study treatments are full irrigation (FI), regulated deficit (RDI75 and RDI55) and partial root zone drying irrigation (PRD75 and PRD55). The results showed that deficit irrigation at 75 and 55 percent of full irrigation resulted in saving 17.1 and 32.6 percent water consumption respectively. Comparison of FI and PRD75 showed that dry weight, height of plants and number of shoots per plant decreased 5.3, 9.8 and 8.9 percent respectively. However, proper development of root in PRD75 increased 12.8 percent of water productivity, 7.3 percent of root fresh weight, 2.7 percent of root depth and 10.7 percent of root volume. Therefore, considering the problems of water scarcity, it is possible to provide PRD75 as a superior treatment and a suitable strategy to cope with the water crisis, to move towards a sustainable agricultural system. In order to investigation the root distribution and plant growth of Rosmarinus Officinalis L., an experiment was conducted in a completely randomized design with three replications under using subsurface irrigation system in 2016. In this study treatments are full irrigation (FI), regulated deficit (RDI75 and RDI55) and partial root zone drying irrigation (PRD75 and PRD55). The results showed that deficit irrigation at 75 and 55 percent of full irrigation resulted in saving 17.1 and 32.6 percent water consumption respectively. Comparison of FI and PRD75 showed that dry weight, height of plants and number of shoots per plant decreased 5.3, 9.8 and 8.9 percent respectively. However, proper development of root in PRD75 increased 12.8 percent of water productivity, 7.3 percent of root fresh weight, 2.7 percent of root depth and 10.7 percent of root volume. Therefore, considering the problems of water scarcity, it is possible to provide PRD75 as a superior treatment and a suitable strategy to cope with the water crisis, to move towards a sustainable agricultural system. https://jwim.ut.ac.ir/article_71009_e367f1bc208109cdde92477213c87983.pdf