Claim · model-written summary
Yield was best at 20 ppm and decreased slightly at higher magnesium concentrations.
VitisNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“grape vines”
e0“Yield and bunch size were best at 20 ppm and slightly decreased as the magnesium concentraion increased”
Title
Studies on the magnesium nutrition of grape vines on the soil in a sandy hill region
R. NAITO; T. OZUKA; A. TOBITANI Journal of the Japanese Society for Horticultural Science 1960. doi:10.2503/jjshs.29.55
Other claims from this paper (11)
- Intervention effect Magnesium at 20–80 ppm, especially 80 ppm, was desirable for non-bearing vine growth.
- Intervention effect Bearing vine growth improved with higher magnesium levels, with small differences over 20–160 ppm.
- Intervention effect bunch size was best at 20 ppm and decreased slightly at higher magnesium concentrations.
- Observation Non-bearing vines receiving at least 20 ppm MgO showed no magnesium deficiency symptoms.
- Observation Bearing vines receiving up to 80 ppm MgO showed magnesium deficiency symptoms.
- Association Leaf magnesium and potassium content had a significant reciprocal relationship in non-bearing vines.
- Association The leaf magnesium–potassium relationship was obscure in bearing vines.
- Association Exchangeable soil magnesium increased nearly proportionally with magnesium solution concentration.
- Intervention effect Exchangeable soil potassium decreased as magnesium supply increased.
- Intervention effect Application of 80 ppm magnesium markedly improved deficiency symptoms in 1958.
- Association Residual deficiency symptoms in 1958 tracked severity in previous years.