Claim · model-written summary
PCA on ten soil and vine variables clearly separated the three vigor levels.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Verbatim
t0“vine performance”
e1“PCA analysis carried out on ten different soil and vine variables clearly separated the three vigor levels”
Title
Matteo Gatti; Alessandra Garavani; Cecilia Squeri; et al. Precision Agriculture 2021. doi:10.1007/s11119-021-09831-w
Other claims from this paper (9)
- Observation High vigor vines achieved stronger vine capacity as total vegetative growth and yield than low vigor vines.
- Observation High vigor vines had markedly less ripened fruits than low vigor vines.
- Observation Soil depth, soil K and P concentration, total available water, clay fraction and leaf N concentration were the factors mostly contributing to high vigor.
- Observation Sand fraction was the main marker for low vigor vines.
- Observation Annual dry matter retrieved in clusters, canes, leaves and shoot clippings, expressed as content, showed a general decreasing trend from high to low vigor.
- Observation Dry matter partitioned to each organ, given on a relative basis as percentage of total, was similar across vigor levels.
- Observation Of 120 within-vigor nutrient combinations (12 nutrients, 2 seasons, 5 organs), 65 showed a significant difference between high and low vigor when nutrients were given as content.
- Observation With nutrient data expressed on a concentration basis (% DM), the number of significant differences between vigor level means fell to 15.
- Mechanism The authors assert that the study strengthens the causal link between soil properties and intra-vineyard spatial variability.