Claim · model-written summary
The critical leaf-blade Mn concentration associated with reduced dry matter yield was approximately 15 ppm.
- Taxon
- barley
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Hordeum vulgaree1 - Organ / stage
- four uppermost leaf bladese0
- Compound
- Mne0
- Outcome
- reduced dry matter yielde0
- Direction
- reducede0
- Value
- approximately 15 ppme0
Not reportedMaterialGeneInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
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Verbatim
e0“The critical Mn concentration in the four uppermost leaf blades associated with reduced dry matter yield was approximately 15 ppm regardless of the Fe supply.”
e1“greenhouse with barley plants”
Title
EFFECTS OF Mn AND Fe SUPPLY ON THE GROWTH OF BARLEY IN NUTRIENT SOLUTION
E. G. BEAUCHAMP; N. ROSSI Canadian Journal of Plant Science 1972. doi:10.4141/cjps72-089
Other claims from this paper (11)
- Intervention effect At anthesis, increasing Fe increased dry matter yield at deficient or near-optimal Mn.
- Intervention effect At maturity, increasing Fe raised kernel yield at all Mn levels.
- Intervention effect At maturity, increasing Fe raised straw yield at all Mn levels.
- Observation Mn deficiency symptoms appeared at the lowest Mn level.
- Intervention effect Fe supply did not alter Mn deficiency symptoms.
- Intervention effect The two highest Mn levels lowered dry matter yield relative to 0.05 ppm at anthesis and maturity.
- Observation Mn toxicity symptoms appeared only at the highest Mn level.
- Observation Critical Mn concentration in leaves plus stem was slightly below that in leaf blades alone.
- Observation Results were similar for two barley cultivars.
- Observation Authors conclude increasing Fe does not lower barley Mn availability or concentration when Mn is below or near optimum.
- Observation Authors conclude increasing Fe may lower barley Mn availability or concentration when Mn is above optimum.