Claim · model-written summary
Nitrogen did not affect total vine yield in the first and last seasons.
- Taxon
- Vitis vinifera
Vitis viniferat0 - Treatment
- Nitrogene0
- Outcome
- total vine yielde0
- Direction
- no effecte0
- Qualifier
- first and last seasone0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen had no effect on the total vine yield in the first and last season.”
t0“Vitis vinifera”
Title
Sally‐Jean Bell; Alan Robson UWA Profiles and Research Repository (University of Western Australia) 1999
Other claims from this paper (12)
- Intervention effect Moderate nitrogen fertilization increased vine vigor and canopy density.
- Observation At 100 g N/vine, vine vigor was maximal before flowering.
- Observation The preflowering vigor effect was absent after flowering.
- Observation At 100 g nitrogen, petiole nitrate concentration at flowering was maximal.
- Observation At 100 g nitrogen, growth and canopy density were maximal.
- Intervention effect At 400 g N/vine, shoots and pruning weight were lower than at 100 g N/vine.
- Intervention effect At 200 to 400 g N/vine, petiole nitrate, leaf area, and canopy density did not differ from 100 g N/vine.
- Observation The highest yield in the second season occurred at 100 g N/vine.
- Intervention effect Additional 200 and 400 g N/vine did not further increase yield.
- Association Higher berry numbers per bunch were associated with increased total yield.
- Recommendation The authors interpret moderate nitrogen as beneficial when vine nitrogen status is low.
- Recommendation The authors judged excessive nitrogen unprofitable for vine productivity.