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Optimizing Rice (Oryza sativa L.) Irrigation to Introduce the Optimum Genotype for Grain Yield and Quality Promotion
Masoumeh Habibi1 , Pouria Mazloom 2, Morteza Nasiri3 , Ali Eftekhari4 , Morteza Moballeghi4
1- Department of Agriculture, Chalus branch, Islamic Azad University, Chalus, Iran
2- Department of Agronomy, Chalous Branch, Islamic Azad University, Chalous, Iran , p_mazloom@yahoo.com
3- Assistant Professor, Seed and Plant Improvement Research Department, Rice Research Institute of Iran (RRII), Mazandaran Branch, Agricultural Research Education and Extension Organization (AREEO), Amol, Iran.
4- Department of Agronomy, Chalous Branch, Islamic Azad University, Chalous, Iran
Abstract:   (205 Views)
Utilizing new irrigation techniques to introduce cultivars into paddy fields experiencing water scarcity is one way to combat and increase water productivity. This experiment was conducted as a strip plot in a randomized complete block design with three independent replications over two years (2016 and 2017) at the Rice Research Institute of Iran, Amol, Iran. Ten rice genotypes (V1 to V10) were subjected to three types of irrigation systems, including conventional flooded irrigation (FI) and alternate wetting and drying (AWD) at 10 (AWD10) and 20 (AWD20) cm below the soil surface, respectively. These results demonstrate that AWD10 and AWD20 methods reduced water consumption by 20% and 17%, respectively, compared to conventional methods. This decreased water usage resulted in 1.4% and 0.2% yield losses compared to the conventional flood irrigation system. Moreover, milling recovery in flood irrigation (68.7 percent) was lower than other wetting and drying methods 10 and 20 (69.6% and 69.8%, respectively). In conclusion, Neda, Shiroodi, and 8611 genotypes which have shown a better response to AWD alternative irrigation are recommended as suitable genotypes for increasing water productivity in paddy fields.
Keywords: Growth, grain yield, irrigation management, photosynthetic characteristics, rice
Full-Text [PDF 748 kb]   (124 Downloads)    
Article Type: Original Research | Subject: Irrigation and Drainage
Received: 2022/12/12 | Accepted: 2023/10/21 | Published: 2024/03/31
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