Claim · model-written summary
Split nitrogen applications increased harvest index.
- Taxon
- rice
Oryza sativat0 - Treatment
- Split applications of Ne0
- Outcome
- harvest index valuee0
- Direction
- increasede0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Split applications of N did not improve the agronomic efficiency but reduced days to maturity and lodging and increased the harvest index value.”
t0“rice”
Title
Effects of preflood nitrogen rate and midseason nitrogen timing on flooded rice
R. CARRERES; J. SENDRA; R. BALLESTEROS; et al. The Journal of Agricultural Science 2000. doi:10.1017/s0021859699007868
Other claims from this paper (10)
- Intervention effect Grain yield increased with preflood nitrogen up to 100 kg N/ha.
- Observation The main yield component response was panicle number per ground area.
- Association Yield components and grain yield depended on timing of extra nitrogen.
- Intervention effect Split nitrogen applications did not improve agronomic efficiency.
- Intervention effect Split nitrogen applications reduced days to maturity and lodging.
- Intervention effect Split nitrogen at 150 kg/ha total with the second dose at panicle initiation increased grain yield.
- Association Nitrogen content and SPAD chlorophyll content were significantly but weakly related.
- Method / resource The SPAD regression equation differed significantly by growth stage.
- Method / resource SPAD may indicate the need for nitrogen topdressing at mid-tillering but not panicle initiation.
- Association SPAD was poorly related to yield increase from nitrogen topdressing.