Claim · model-written summary
Increasing exchangeable Ca:Mg ratio nearly doubled soybean shoot and root dry matter at constant soil pH.
- Taxon
- soybean
Glycine maxe0 - Treatment
- increased exchangeable Ca:Mg ratioe0
- Outcome
- soybean shoot and root dry mattere0
- Direction
- almost doublede0
- Qualifier
- constant soil pHe0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An increased exchangeable Ca:Mg ratio (at constant soil pH) in the acid soil almost doubled the soybean shoot and root dry matter”
Title
Protective effect of divalent cations against aluminum toxicity in soybean
Ivo Ribeiro da Silva; Tarcísio Fernando Côrtes Corrêa; Roberto Ferreira Novais; et al. Revista Brasileira de Ciência do Solo 2008. doi:10.1590/s0100-06832008000500027
Other claims from this paper (9)
- Intervention effect Cu, Zn, Co and Sn were toxic without aluminum at 25 µmol L-1.
- Intervention effect Mn, Ba, Sr and Mg had positive or absent effects on soybean root elongation up to 100 µmol L-1.
- Intervention effect At 10 µmol L-1 aluminum, only Mg restored root growth to control levels.
- Intervention effect Higher tin doses slightly alleviated aluminum rhizotoxicity.
- Intervention effect Other cations reduced root growth or had no effect.
- Mechanism Mg2+ alleviated aluminum toxicity more efficiently than Ca2+.
- Intervention effect CaCO3 increased soybean growth by increasing soil pH.
- Association Reduced aluminum toxicity coincided with lower aluminum accumulation in plant tissue.
- Mechanism The authors suggest Mg-induced absorption competition or exclusion explains lower tissue aluminum.