Claim · model-written summary
Preflood urea applied 14 days early yielded lowest grain yield of rice.
- Taxon
- rice
Oryza sativae0 - Treatment
- urea was applied 14 d prefloode0
- Outcome
- grain yield of ricee0
- Direction
- loweste0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ammonia volatilization was the highest (14–32%) and N uptake and grain yield of rice the lowest when urea was applied 14 d preflood.”
Title
Barney R. Griggs; Richard J. Norman; Charles E. Wilson; et al. Soil Science Society of America Journal 2007. doi:10.2136/sssaj2006.0180
Other claims from this paper (12)
- Intervention effect Preflood urea applied 14 days early yielded highest Ammonia volatilization.
- Intervention effect Preflood urea applied 14 days early yielded lowest N uptake.
- Intervention effect Ammonium sulfate applied 14 days preflood had low ammonia N loss of 1.5–7%.
- Intervention effect Ammonium sulfate 14 days preflood produced N uptake similar to urea one day preflood.
- Intervention effect Ammonium sulfate 14 days preflood produced grain yields of rice similar to urea one day preflood.
- Intervention effect Stale seedbed had no effect on ammonium sulfate ammonia volatilization.
- Intervention effect Stale seedbed affected urea ammonia volatilization in one year on silt loam with more weedy residue.
- Intervention effect The two tillage systems gave similar rice N uptakes.
- Intervention effect The two tillage systems gave similar rice grain yields.
- Intervention effect Urea on silt loam had more rapid ammonia volatilization than on clay.
- Intervention effect Urea on silt loam had greater ammonia volatilization than on clay.
- Observation Delaying the flood had the greater impact on urea ammonia volatilization loss than conservation tillage.