Abstract
Abstract A field experiment was arranged with a split-plot design with three replications, two irrigation methods including continuous flooding (CF) and Alternate Wet Drying (AWD) combination with three amounts of two fertilizers, nitrogen White Urea and Black Urea. Actual yield, yield components, leaf N content, and chlorophyll index were investigated. The results showed that AWD application saved 9.5% of freshwater. Compared with FC, OM18 did not respond to AWD combination with white and black urea. Applying 100 or 120N of both nitrogen types gave better performances in panicles, filled grain, and yield under both FC and AWD. Regarding OM 18 yield, 100N (Black Urea)– 80 P 2 O 5 – 60K 2 O in CF gave the best yield (8.0 tons/ha), but this treatment showed non-significant differences from 120N(Black Urea) – 80 P 2 O 5 – 60K 2 O in AWD as well as 120N (Black Urea) – 80 P 2 O 5 – 60K 2 O in CF (7.2 tons/ha). OM 18 responded to Black Urea better than White Urea under AWD and FC. OM 18 showed the best yield in 100N(Black Urea) – 80 P 2 O 5 – 60K 2 O under CF. AWD application saved up to 9.5% freshwater.
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Claims 7
Claim · model-written summary
Alternate wetting and drying saved 9.5% freshwater.
- Taxon
- rice
Oryza sativat0 - Treatment
- AWDe0
- Outcome
- freshwatere0
- Direction
- savede0
- Value
- 9.5%e0
- Comparator
- continuous floodinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“AWD application saved 9.5% of freshwater”
e1“continuous flooding (CF) and Alternate Wet Drying (AWD)”
Claim · model-written summary
OM18 did not respond to AWD combined with white and black urea versus FC.
Verbatim
e0“Compared with FC, OM18 did not respond to AWD combination with white and black urea”
Claim · model-written summary
Applying 100 or 120N improved panicle number, filled grain and yield under both irrigation regimes.
- Taxon
- riceOryza sativat0
- Treatment
- 100 or 120N of both nitrogen typese0
- Outcome
- panicles, filled grain, and yielde0
- Direction
- bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice”
e0“Applying 100 or 120N of both nitrogen types gave better performances in panicles, filled grain, and yield under both FC and AWD”
Claim · model-written summary
The 100N Black Urea combination under continuous flooding gave the best OM18 yield, 8.0 tons/ha.
Verbatim
e0“OM 18 yield, 100N (Black Urea)– 80 P 2 O 5 – 60K 2 O in CF gave the best yield (8.0 tons/ha)”
Claim · model-written summary
The best treatment did not differ significantly from 120N Black Urea under AWD.
Verbatim
e0“this treatment showed non-significant differences from 120N(Black Urea) – 80 P 2 O 5 – 60K 2 O in AWD”
e1“OM 18 yield”
Claim · model-written summary
The best treatment did not differ significantly from 120N Black Urea under CF, yielding 7.2 tons/ha.
Verbatim
e0“this treatment showed non-significant differences from 120N(Black Urea) – 80 P 2 O 5 – 60K 2 O in AWD as well as 120N (Black Urea) – 80 P 2 O 5 – 60K 2 O in CF (7.2 tons/ha)”
e1“OM 18 yield”
Claim · model-written summary
OM18 responded better to Black Urea than White Urea under AWD and FC.
Verbatim
e0“OM 18 responded to Black Urea better than White Urea under AWD and FC”
The same questions in other papers
nitrogen · yield · Oryza sativa (rice)Positive and negative results
1,802 papers in the same direction as this paper · 193 in the opposite direction · 49 reporting no difference from an alternative
- positive
- negative
- negative
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