Claim · model-written summary
Soil and combined nitrogen did not improve grain yield or vegetative biomass.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Soil and soil + foliar Ne0
- Outcome
- grain yield or vegetative biomasse0
- Direction
- did not improvee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Soil and soil + foliar N markedly increased NDFF and NDFS while suppressing nodulation (particularly at V4) and reducing nitrogenase activity, yet they did not improve grain yield or vegetative biomass”
t0“Soybean–Rhizobium”
Title
Nicolas Braga Casarin; Cássio Carlette Thiengo; Carlos Alcides Villalba Algarin; et al. Nitrogen 2025. doi:10.3390/nitrogen7010001
Other claims from this paper (10)
- Observation Without external nitrogen, atmosphere-derived nitrogen exceeded 97% in all soybean organs.
- Observation Leaf nitrate reductase activity was higher without external nitrogen.
- Intervention effect Soil nitrogen increased the fertilizer-derived nitrogen fraction.
- Intervention effect Combined soil and foliar nitrogen increased fertilizer-derived nitrogen.
- Intervention effect Soil nitrogen increased soil-derived nitrogen fraction.
- Intervention effect Combined soil and foliar nitrogen increased soil-derived nitrogen fraction.
- Intervention effect Soil and combined nitrogen suppressed nodulation, especially at V4.
- Intervention effect Soil and combined nitrogen reduced nitrogenase activity.
- Intervention effect Foliar nitrogen had modest effects on nitrogen partitioning.
- Intervention effect Foliar nitrogen did not enhance yield.