Claim · model-written summary
Increasing potassium rates sharply decreased leaf magnesium content and chloroplast area in rice.
- Taxon
- Rice
Oryza sativat0 - Treatment
- increase of K ratese0
- Outcome
- Mg contents, and the chloroplast areae0
- Direction
- declined sharplye0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the SPAD readings, chlorophyll, N and Mg contents, and the chloroplast area increased significantly with the increase of N rates, while declined sharply with the increase of K rates”
t0“Rice Leaves”
Title
Diagnosis of Nitrogen Nutrition in Rice Leaves Influenced by Potassium Levels
Wenfeng Hou; Merle Tränkner; Jianwei Lu; et al. Frontiers in Plant Science 2020. doi:10.3389/fpls.2020.00165
Other claims from this paper (9)
- Intervention effect Increasing nitrogen rates darkened rice leaves.
- Intervention effect Increasing potassium rates made rice leaves paler.
- Intervention effect Increasing nitrogen rates significantly increased SPAD readings, chlorophyll content and leaf nitrogen content in rice.
- Intervention effect Increasing nitrogen rates significantly increased leaf magnesium content and chloroplast area in rice.
- Intervention effect Increasing potassium rates sharply decreased SPAD readings, chlorophyll content and leaf nitrogen content in rice.
- Mechanism The authors attribute potassium-associated decreases in rice leaf indicators to antagonism between potassium, ammonium and magnesium ions.
- Mechanism The authors propose that potassium increased rice leaf growth and diluted leaf nitrogen and magnesium.
- Method / resource Potassium-induced paler rice leaves may overestimate nitrogen demand and do not reliably estimate nitrogen demand or grain yield.
- Recommendation Rice production and fertilization should account for antagonism among potassium, ammonium and magnesium ions.