Claim · model-written summary
At pH 4.5, Ca concentration did not affect soybean nodule number or nodule dry weight.
- Taxon
- soybean
Glycine maxe1 - Treatment
- Ca concentratione6
- Outcome
- Nodule number and dry weight per plante6
- Direction
- not affectede6
- Qualifier
- at pH 4.5e6
- Setting
- solution culture experimente1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Effects of varying solution pH (4.5, 5.0, 5.5) and external calcium (Ca) concentration (0.05, 0.5, 2.5 m M ) on growth and nodulation of soybean [ Glycine max (L.) Merr. cv. Fitzroy] were investigated in a solution culture experiment.”
e6“Nodule number and dry weight per plant were not affected by Ca concentration at pH 4.5 but increased significantly with increasing Ca concentration at pH 5.0.”
Title
Effects of Acid Soil Infertility Factors on Growth and Nodulation of Soybean1
A. K. Alva; D. G. Edwards; C. J. Asher; et al. Agronomy Journal 1987. doi:10.2134/agronj1987.00021962007900020025x
Other claims from this paper (13)
- Intervention effect Solution pH did not influence total dry matter production of soybean.
- Intervention effect Shoot growth of soybean increased with increasing solution pH.
- Intervention effect Root growth of soybean decreased with increasing solution pH.
- Intervention effect Increasing Ca concentration significantly increased soybean shoot dry weight at pH 5.0 and 5.5.
- Intervention effect At pH 4.5, first nodule appearance in soybean was delayed.
- Intervention effect At pH 4.5, nodule number and nodule dry weight per soybean plant were lower than at higher pH.
- Intervention effect At pH 5.0, nodule number and nodule dry weight per soybean plant increased significantly with increasing Ca concentration.
- Intervention effect At pH 5.5, nodule number per soybean plant decreased as Ca concentration rose from 0.5 to 2.5 mM.
- Intervention effect At pH 5.5, nodule dry weight per soybean plant increased as Ca concentration rose from 0.5 to 2.5 mM.
- Intervention effect Shoot and root weights of soybean declined linearly with increasing monomeric aluminium activity.
- Observation The critical monomeric Al activity giving 90% of soybean yield was 5 to 9 µM.
- Intervention effect Nodulation of soybean was totally inhibited at monomeric Al activity of 27.8 µM or more.
- Observation The critical monomeric Al activity for nodule number of soybean was about 0.4 µM.