Claim · model-written summary
A segmented linear model significantly represented crop yield against soil mineral nitrogen.
- Taxon
- spinach
Spinacia oleraceat0 - Outcome
- relationship between crop yield (1.7 to 21.7 t ha–1) and soil mineral N concentration (7.6 to 41.0 mg kg–1)e0
- Value
- 1.7 to 21.7 t ha–1e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spinach (Spinacia oleracea L.)”
e0“A segmented linear model significantly represented the relationship between crop yield (1.7 to 21.7 t ha–1) and soil mineral N concentration (7.6 to 41.0 mg kg–1)”
Title
Daniele Massa; Luca Incrocci; Luca Botrini; et al. Italian Journal of Agronomy 2018. doi:10.4081/ija.2018.1120
Other claims from this paper (7)
- Observation The model set optimal mineral nitrogen at 23.4 mg kg–1.
- Observation Above the nitrogen threshold crop yield did not vary significantly.
- Observation Above the threshold tissue characteristics and produce quality did not vary significantly.
- Intervention effect Suboptimal nitrogen reduced plant growth.
- Intervention effect Suboptimal nitrogen reduced tissue mineral content.
- Intervention effect Suboptimal nitrogen reduced SPAD index.
- Recommendation The authors propose their models for nitrogen supply and spinach growth and yield estimation.