Claim · model-written summary
Ammonium-supplied plants had lower total mineral cation uptake than nitrate-supplied plants.
- Taxon
- Soybeans
Glycine maxt0 - Treatment
- ammoniume3
- Outcome
- total mineral cation uptakee5
- Direction
- lowere5
- Comparator
- nitratee6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
t0“Growth of Soybeans Supplied with Ammonium Nitrogen”
e3“The plants receiving ammonium had a higher content of protein and matured earlier but did not produce as much vegetative growth”
e5“The total mineral cation uptake was lower”
e6“than in those supplied with nitrate indicating”
Title
The Effect of Calcium on the Growth of Soybeans Supplied with Ammonium Nitrogen
J. J. Siegel; H. W. Hough; L. M. Turk Soil Science Society of America Journal 1952. doi:10.2136/sssaj1952.03615995001600020020x
Other claims from this paper (10)
- Observation Nitrification was inhibited in fumigated soils, resulting in accumulation of ammonium.
- Association Plants receiving ammonium had a higher protein content.
- Association Plants receiving ammonium matured earlier.
- Association Plants receiving ammonium did not produce as much vegetative growth.
- Intervention effect High calcium levels gave the best plant growth where ammonium was the nitrogen source.
- Observation Soybeans on fumigated soils responded favorably to high calcium levels.
- Observation Soybeans on fumigated soils grew rapidly.
- Observation Soybeans on fumigated soils had a high protein content.
- Association Total mineral cation uptake on fumigated soils was less than on untreated soils.
- Recommendation A high level of calcium is necessary where ammonium is the nitrogen source.