Claim · model-written summary
Combined direct and indirect Fe toxicity may produce a range of rice oranging intensities and brown leaf streaks.
- Taxon
- rice
Oryza sativae1 - Compound
- Fee0
- Outcome
- wide range of intensities of oranging symptoms and brown streaks on the leavese0
- Qualifier
- combination of direct and indirect Fe‐toxicitye0
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A combination of direct and indirect Fe‐toxicity may produce plants with a wide range of intensities of oranging symptoms and brown streaks on the leaves.”
e1“flooded rice ( Oryza sativa )”
Title
Iron‐Induced Oranging Disease of Rice in Relation to Physico‐Chemical Changes in a Flooded Oxisol
R. H. Howeler Soil Science Society of America Journal 1973. doi:10.2136/sssaj1973.03615995003700060030x
Other claims from this paper (11)
- Observation Rates of reduction and solution Fe buildup varied among Llanos soils and moisture and cultivation histories.
- Intervention effect Water-management treatments reduced soil-solution Fe.
- Intervention effect Large lime additions reduced soil-solution Fe.
- Intervention effect MnO 2 additions reduced soil-solution Fe.
- Association Rice oranging symptoms increased as solution Fe concentration increased.
- Association Large rice plants were more seriously affected by oranging than small plants.
- Observation Affected rice roots were heavily coated with oxidized Fe.
- Observation Few active white roots formed after Fe concentration increased.
- Mechanism The authors attribute rice oranging mainly to Fe-induced deficiency of P, K, Ca and Mg.
- Mechanism Fe-coated roots may have reduced nutrient absorption.
- Mechanism Excessive Fe absorption can cause rice bronzing symptoms under certain conditions.