Abstract
ABSTRACT Climate change and water scarcity pose significant challenges to rice production in Bangladesh, necessitating water-efficient practices. This study, conducted during the 2024 Boro rice season in Mymensingh, Bangladesh, compared the impacts of alternate wetting and intense drying (AWID), with irrigation at a 20-cm water level drop, against continuous flooding (CF) and alternate wetting and moderate drying (AWMD), with a 15 cm drop. The AWID resulted in 46.12% water savings and a 43.1% increase in crop–water productivity, yielding 5.10 t/ha, while AWMD saved 38.64% water with a yield of 6.13 t/ha. Despite a 22.7% yield reduction compared to CF (6.60 t/ha), AWID's superior water efficiency underscores its potential as a sustainable option in water-scarce regions. Excluding the first 15-day crop establishment phase, the water footprint was lowest for AWMD (1003.83 L/kg) and AWID (1079.68 L/kg) compared to CF (1439.00 L/kg). Climate projections for the 2040 and 2070s indicate increased temperatures, decreased rainfall, and higher evapotranspiration, potentially raising irrigation demands by up to 30% under RCP 8.5 scenarios. These water-saving techniques offer promising strategies for sustaining rice production while conserving water resources. Further research is recommended to optimize these practices across diverse agro-ecological zones, enhancing climate resilience in rice cultivation.
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Claims 10
Claim · model-written summary
AWID saved 46.12% irrigation water.
Verbatim
e0“AWID resulted in 46.12% water savings”
e1“against continuous flooding (CF) and alternate wetting and moderate drying (AWMD)”
t0“Boro rice”
Claim · model-written summary
AWID increased crop–water productivity by 43.1%.
Verbatim
e0“a 43.1% increase in crop–water productivity”
e1“The AWID resulted in 46.12% water savings”
e2“against continuous flooding (CF) and alternate wetting and moderate drying (AWMD)”
t0“Boro rice”
Claim · model-written summary
AWID yielded 5.10 t/ha.
Not reportedDirection
Verbatim
e0“AWID resulted in 46.12% water savings and a 43.1% increase in crop–water productivity, yielding 5.10 t/ha”
t0“Boro rice”
Claim · model-written summary
AWMD saved 38.64% water.
Verbatim
e0“AWMD saved 38.64% water with a yield of 6.13 t/ha”
e1“against continuous flooding (CF) and alternate wetting and moderate drying (AWMD)”
t0“Boro rice”
Claim · model-written summary
AWMD yielded 6.13 t/ha.
Not reportedDirection
Verbatim
e0“AWMD saved 38.64% water with a yield of 6.13 t/ha”
t0“Boro rice”
Claim · model-written summary
AWID yield was 22.7% lower than continuous flooding, which yielded 6.60 t/ha.
Verbatim
e0“22.7% yield reduction compared to CF (6.60 t/ha)”
e1“AWID's superior water efficiency”
t0“Boro rice”
Claim · model-written summary
AWMD water footprint was 1003.83 L/kg outside the establishment phase, lowest among regimes.
Verbatim
e0“Excluding the first 15-day crop establishment phase, the water footprint was lowest for AWMD (1003.83 L/kg) and AWID (1079.68 L/kg) compared to CF (1439.00 L/kg)”
t0“Boro rice”
Claim · model-written summary
AWID water footprint was 1079.68 L/kg outside the establishment phase, below CF.
Verbatim
e0“Excluding the first 15-day crop establishment phase, the water footprint was lowest for AWMD (1003.83 L/kg) and AWID (1079.68 L/kg) compared to CF (1439.00 L/kg)”
t0“Boro rice”
Claim · model-written summary
Projected climate changes may raise rice irrigation demand by up to 30% under RCP 8.5.
Verbatim
e0“Climate projections for the 2040 and 2070s indicate increased temperatures, decreased rainfall, and higher evapotranspiration, potentially raising irrigation demands by up to 30% under RCP 8.5 scenarios”
t0“Boro rice”
Claim · model-written summary
The authors recommend more research to optimize water-saving practices across agro-ecological zones.
- Taxon
- rice
Oryza sativae0 - Outcome
- optimize these practices across diverse agro-ecological zonese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Further research is recommended to optimize these practices across diverse agro-ecological zones, enhancing climate resilience in rice cultivation”
The same questions in other papers
processing · yield · Oryza sativa (rice)Positive and negative results
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