Univrsity Of Tehran Press Water and Irrigation Management 2251-6298 12 3 2022 08 23 Investigation of the effect of deficit irrigation methods on yield, water consumption and yield components of rice (Binam variety) Investigation of the effect of deficit irrigation methods on yield, water consumption and yield components of rice (Binam variety) 467 481 85430 10.22059/jwim.2022.333209.936 FA Reza Firozpour M.Sc. Student of Irrigation and Drainage Engineering, Sari Agriculture Sciences and Natural Resources University, Sari, Iran. Ali Shahnazari Professor, Water Engineering Department, Sari Agriculture Sciences and Natural Resources University, Sari, Iran. Ali Akbarzadeh Deputy Expert of the National Rice Research Institute, Amol, Iran. Mostafa Yousefeian Ph.D. Student of Irrigation and Drainage Engineering, Sari Agricultural Sciences and Natural Resources University, Sari, Iran. Journal Article 2021 10 30 It is expected that due to the value of water in the agricultural sector and the reduction of water resources in recent years, methods of adaptation to the conditions ahead will be investigated. A study was carried out to investigate the effects of deficit irrigation on yield components of rice (Binam variety). The experiment was run in the form of a randomized complete block design with nine treatments and three replications in the Babolsar city of Mazandaran province in year 2020. The treatments were regulated deficit irrigation (RDI) and partial root zone drying (PRD) in three drought stresses of 10, 30 and 60 kPa (RDI₁₀, RDI₃₀, RDI₆₀, PRD₁₀, PRD₃₀ and PRD₆₀) and full irrigation (FID). Drip tape irrigation system was used as irrigation method. Flood irrigation system was used as an irrigation (FI₁) and weed (FI₂) control treatment. Soil water deficit was measured by a tensiometer and Volumetric meter was used to calculate water consumption. Flood irrigation treatment had the highest yield of rough rice and water consumption (6442 kg / ha and 10886 m³ / ha). The lowest rice yield was for RDI₆₀ treatment with 2998 kg / ha and the lowest water consumption was corresponded to PRD₆₀ treatment with 2111 m³ / ha. According to the results, the applying of PRD method in addition to higher yield than RDI, saved 76.33% in water consumption. The PRD method could be recommended for the region. It is expected that due to the value of water in the agricultural sector and the reduction of water resources in recent years, methods of adaptation to the conditions ahead will be investigated. A study was carried out to investigate the effects of deficit irrigation on yield components of rice (Binam variety). The experiment was run in the form of a randomized complete block design with nine treatments and three replications in the Babolsar city of Mazandaran province in year 2020. The treatments were regulated deficit irrigation (RDI) and partial root zone drying (PRD) in three drought stresses of 10, 30 and 60 kPa (RDI₁₀, RDI₃₀, RDI₆₀, PRD₁₀, PRD₃₀ and PRD₆₀) and full irrigation (FID). Drip tape irrigation system was used as irrigation method. Flood irrigation system was used as an irrigation (FI₁) and weed (FI₂) control treatment. Soil water deficit was measured by a tensiometer and Volumetric meter was used to calculate water consumption. Flood irrigation treatment had the highest yield of rough rice and water consumption (6442 kg / ha and 10886 m³ / ha). The lowest rice yield was for RDI₆₀ treatment with 2998 kg / ha and the lowest water consumption was corresponded to PRD₆₀ treatment with 2111 m³ / ha. According to the results, the applying of PRD method in addition to higher yield than RDI, saved 76.33% in water consumption. The PRD method could be recommended for the region. https://jwim.ut.ac.ir/article_85430_32d4ee539adcbd57ba375bb4c685abc5.pdf