Claim · model-written summary
At high Ca, late in the season, tomato fruit firmness was higher at 80 mg L -1 Mg than at 50 mg L -1 Mg.
- Taxon
- Tomato
Solanum lycopersicume0 - Treatment
- 80 mg L -1 Mge4
- Outcome
- fruit firmnesse4
- Direction
- highere4
- Qualifier
- late in the seasone4
- Comparator
- 50 mg L -1 Mge4
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Tomato (Lycopersicon esculentum Mill.) ‘Trust’”
e4“At high Ca, Mg concentration affected fruit firmness only late in the season; fruit firmness at 80 mg L -1 Mg was higher than at 50 mg L -1 Mg concentration”
Title
Xiuming Hao and; Athanasios P. Papadopoulos Canadian Journal of Plant Science 2003. doi:10.4141/p02-140
Other claims from this paper (14)
- Intervention effect High Ca (300 mg L -1) increased tomato fruit yield compared with low Ca (150 mg L -1).
- Intervention effect High Ca (300 mg L -1) reduced the incidence of blossom-end rot in tomato compared with low Ca.
- Intervention effect High Ca (300 mg L -1) reduced fruit russeting in tomato compared with low Ca.
- Intervention effect High Ca reduced tomato fruit firmness compared with low Ca.
- Intervention effect High Ca did not affect tomato fruit size or leaf photosynthesis.
- Intervention effect Tomato plants grown at 20 mg L -1 Mg started to show leaf chlorosis.
- Observation Tomato leaves with moderate chlorosis lost about 50% of their photosynthetic capacity.
- Intervention effect Mg at 20 mg L -1 decreased tomato fruit yield in the late growth stage.
- Association Blossom-end rot incidence in tomato increased linearly with Mg concentration in the early growth stage at low Ca.
- Association At high Ca, blossom-end rot incidence was not affected by Mg concentration.
- Association Tomato fruit firmness increased with Mg concentration at low Ca.
- Intervention effect Fruit russeting in mid-season was least at 300/50 mg L -1 Ca/Mg.
- Recommendation The optimum Ca/Mg concentration for tomato production is estimated at 300/50–80 mg L -1.
- Recommendation Mg may be started at 50 mg L -1 and gradually increased to 80 mg L -1 towards the end of the season in tomato.