Claim · model-written summary
WDR varieties showed a significant 17% decrease in ratoon-crop yield.
Verbatim
e0“grain yield and quality in ratoon rice”
e1“WDR varieties maintained stable yield and grain quality under water-saving conditions”
e2“but ratoon crop yield decreased significantly by 17%”
Title
Effects of water management and variety type on grain yield and quality in ratoon rice
Jin-Juan Zhu; Hui-Ping Wang; Guo-Dong Yang; et al. ACTA AGRONOMICA SINICA 2025. doi:10.3724/sp.j.1006.2026.52021
Other claims from this paper (19)
- Intervention effect Water-saving irrigation reduced main-crop water input by 76% compared with continuous flooding in ratoon rice.
- Intervention effect Water-saving irrigation reduced ratoon-crop water input by 85% compared with continuous flooding in ratoon rice.
- Intervention effect Water-saving irrigation did not change grain yield relative to continuous flooding in ratoon rice.
- Intervention effect Water-saving irrigation did not change milling, appearance, or cooking/eating quality relative to continuous flooding in ratoon rice.
- Observation SQR varieties averaged 8.54 t hm-2 yield in the main crop, comparable to OPR.
- Observation SQR varieties averaged 5.88 t hm-2 yield in the ratoon crop, comparable to OPR.
- Observation Head rice rate increased significantly by 13.5 percentage points in SQR varieties.
- Observation Head rice rate increased significantly by 20.6 percentage points in SQR varieties.
- Observation Chalky grain rate decreased significantly by 22.6 in SQR varieties in the main crop.
- Observation Chalkiness degree decreased significantly by 6.4 in SQR varieties in the main crop.
- Observation Chalky grain rate decreased significantly by 10.8 in SQR varieties in the ratoon crop.
- Observation Chalkiness degree decreased significantly by 1.8 in SQR varieties in the ratoon crop.
- Observation WDR varieties maintained stable yield and grain quality under water-saving conditions.
- Observation WDR varieties had main-crop yield and grain quality similar to OPR.
- Observation Head rice rate increased by 17.0 percentage points in WDR varieties.
- Observation Chalky grain rate decreased by 5.5 percentage points in WDR varieties.
- Observation Chalkiness degree decreased by 1.0 percentage point in WDR varieties.
- Association Grain quality traits were positively associated between the main and ratoon crops.
- Recommendation In rainfed regions, combining superior rice varieties with water-saving irrigation can reduce water use and achieve high yield with premium grain quality in ratoon rice.