2024-03-29T02:21:40Z
https://meral.edu.mm/oai
oai:meral.edu.mm:recid/92
2021-12-13T00:45:50Z
1582963567848:1582969027121
user-yau
Effect of Alternate Wetting and Drying on Crop Performance, Water Input and Water Productivity of Direct Wet-seeded Inbred and Hybrid Rice
Phone Thidar Aung
Kyaw Kyaw Win
Swe Swe Mar
Phyu Thaw Tun
Khin Mar Htay
The experiments were conducted to evaluate the yield performance of the inbred and hybrid rice varie-ties under alternate wetting and drying (AWD), to compare the water productivity of rice varieties under AWD condition and to investigate the water saving percent in different rice varieties under AWD. Two water regimes (alternate wetting and drying, AWD and continuous flooding, CF) in main plot and four varieties including two hybrid varieties (Long-9, Yezin Pale Thwe-3) and two inbred varieties (Yaenelo-4 , Yaenelo-1) in sub plot were laid out as split plot design with four replications. During the study peri-od, loam soil in DaikU Township and silty clay loam soil in Maubin Township were observed. The max-imum grain yield and yield components of tested varieties were 2.99 t ha-1 in DaikU and 5.76 t ha-1 in Maubin. The water productivities of AWD were not statistically different with CF but water saving were resulted under AWD in both DaikU and Maubin townships. Hybrid rice produced higher grain yield, yield components, morphological traits and water productivity than those of inbred rice in both townships. Grain yield and water productivity were not significantly different between AWD and CF. However, more water can save under AWD than CF and subsequently found that above 20 % of water saving for hybrid and above 30% for inbred during summer rice growing season in the study areas. Therefore, this study indicated that applied AWD irrigation maintained current yield and reduction of water input for Hybrid and Inbred rice varieties under the tested areas, DaikU and Maubin Townships.
2019
http://hdl.handle.net/20.500.12678/0000000092
https://meral.edu.mm/records/92