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EFFECTS OF IRRIGATION SCHEDULING AT DIFFERENT MANAGED ALLOWABLE DEPLETION IN SALINE SOIL ON THREE RICE VARIETIES |
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| รหัสดีโอไอ | |
| Creator | Galadima Umar Idris, Sudsaisin Kaewrueng, Tanee Sreewongchai, Saowanuch Tawornpruek |
| Title | EFFECTS OF IRRIGATION SCHEDULING AT DIFFERENT MANAGED ALLOWABLE DEPLETION IN SALINE SOIL ON THREE RICE VARIETIES |
| Contributor | - |
| Publisher | TuEngr.com |
| Publication Year | 2563 |
| Journal Title | International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies |
| Journal Vol. | 11 |
| Journal No. | 6 |
| Page no. | 11A06H: 1-14 |
| Keyword | Rice crop production, Environmental stress, Rice yield, EC tolerant, Irrigation scheduling, Rice response to drought, Soil moisture content (MC), Electrical conductivity at saturation extract (ECe), Manageable allowable depletion (MAD). |
| URL Website | https://tuengr.com/Vol11_6.html |
| Website title | ITJEMAST V10(6) @ TuEngr.com |
| ISSN | 2228-9860 |
| Abstract | The increasing scarcity of freshwater is threatening the sustainability of irrigated rice. Irrigation scheduling when water is inadequate within the paddy sodic soil can be an alternative to sustain rice crop production. This study focuses on observing the crop growth parameters and yield response of three rice varieties. Three salinity levels were prepared to 1.05 dS/m, 1.55 dS/m and 2.08 dS/m. Four moisture contents were set up to flooded water content, 0.1 to 0.33 bar, 0.45 MAD and 0.60 MAD. Three rice varieties, Pathum Thani 1 (PPT1), PPT1 mutant, and Nerica3 were assigned to the treatments. At flooded water content, both growth and yield were higher, the highest yield recorded was 26.11 g pot-1 in PPT1 mutant at 1.05 dS/m with decreases in yield at higher electrical conductivity at saturation extract (ECe) levels in PPT1 variety. All three varieties responded to lower yield in more delayed irrigation scheduling. At 0.1 to 0.33 bar, the yield gap was around 34.5, 35 and 27% lower than that of the flooded water content for PPT1, PPT1 mutant, and Narica3. At 0.45 and 0.60 MAD, yield appeared in Narica3 only. Crop water use was higher in PPT1 mutant at 1.05 dS/m in all the moisture contents, with 5.61 mm/day recorded at flooded water content. The study concludes that the reduction in moisture content from flooded water content to 0.1 to 0.33 bar up to 0.45 MAD and 0.60 MAD has affected both crop growth and yield of rice among all varieties. |
