Claim · model-written summary
In the 5-year non-fertilized plot, grain yield increased as nitrogen top dressing increased up to 2.4kg/l0a.
- Taxon
- rice plants
Oryza sativae0 - Treatment
- nitrogen top dressinge1
- Outcome
- grain yielde1
- Direction
- increasede1
- Qualifier
- up to 2.4kg/l0ae1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rice plants grown in 5-year differently fertilized soils”
e1“In 5-year non-fertilized plot grain yield increased as amounts of nitrogen top dressing increased up to 2.4kg/l0a”
Title
Jung-Il Lee; Eun-Woong Lee The Korean Journal of Crop Science 1980
Other claims from this paper (9)
- Intervention effect In 5-year non-fertilized and PK applied plots, heading was delayed by seven days compared with NK, NP or NPK plots where nitrogen was applied as basal.
- Intervention effect Phosphorus and potassium top dressing did not affect the heading date of rice plants.
- Association In 5-year non-fertilized and PK applied plots, heading was delayed by 1 to 4 days as nitrogen top dressing increased.
- Mechanism The grain yield increase in the 5-year non-fertilized plot is attributed to more panicles per hill and more spikelets per panicle.
- Association In the 5-year PK applied plot, nitrogen top dressing did not affect grain yield.
- Association In the 5-year PK applied plot, the number of panicles per hill increased with nitrogen levels.
- Association In the 5-year PK applied plot, the percentage of ripened grains and grain weight tended to decrease as nitrogen levels increased.
- Association The panicle/maximum tillers ratio increased markedly with nitrogen top dressing in the non-fertilized and PK plots, with a maximum of 130%.
- Intervention effect Phosphorus and potassium top dressing did not affect yield or other agronomic characters in NK and NP applied plots.