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Grain Yield and Water Use Efficiency of Riceberry Rice in Response to Water-Saving Irrigation Techniques |
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| รหัสดีโอไอ | |
| Creator | Surasit Punyawansiri |
| Title | Grain Yield and Water Use Efficiency of Riceberry Rice in Response to Water-Saving Irrigation Techniques |
| Contributor | Voradej Chinapongthitiwa, Bancha Kwanyuen |
| Publisher | Department of Agriculture |
| Publication Year | 2563 |
| Journal Title | Thai Agricultural Research Journal |
| Journal Vol. | 38 |
| Journal No. | 2 |
| Page no. | 128-138 |
| Keyword | Riceberry rice, water management, water use efficiency, water productivity, yield |
| URL Website | http://at.doa.go.th/journal |
| Website title | Thai Agricultural Research Journal |
| ISSN | 0125-8389 |
| Abstract | Reducing irrigation water in rice fields while maintaining high grain yield is important for the sustainable rice production. However, water-saving techniques has not been widely adopted by Thai farmers because of constrains in effectiveness and reliability. About 10-20years ago, the alternate wetting and drying (AWD) technology has been developed andrecommended to irrigated rice farmers in Asian countries. But the performance of the AWDtechnology has not yet been evaluated for water use efficiency for Riceberry rice.The objective of this study was to determine the effects of two AWD treatments (AWD1,AWD2) had on growth grain yield and yield components of Riceberry rice as compared tothe conventional farmer's practice by continuous flooding method (CF). In AWD1, waterlevel was let to drop to -5 cm below ground level, the field was then reflooded until thewater level reached 5 cm above ground; in AWD2, water level was maintained at 5 cmabove ground from the first day of transplanting until 25 and 45 days after transplantingwhen water level was let to drop to -15 cm below the ground level and then refloodedthe field until the water level reached 5 cm above ground. While in continuous floodingmethod (CF) the water level was kept at 5 cm above ground for the entire season.The experiments were carried out in the irrigated paddy fields in Chiang Mai provinces indry seasons of 2016 and 2017. Results revealed that both AWD1 and AWD2 consumed lesswater than the continuous water supply method, (CF) at approximately 31.75 34.06 %in 2016 and about 33.38 40.59 % in 2017 with no different in grain yield and yieldcomponents. Moreover, both the irrigation water productivity and water use efficiencyof AWD method were higher than those of the CF method. In conclusion, the AWDwater-saving irrigation techniques are the appropriate water management techniques forcultivation of Riceberry rice and it is an effective way to reduce the amount of water usedin the agricultural sector in Thailand. |
