TY - JOUR
T1 - Grapevine responses to site-specific spatiotemporal factors in a Mediterranean climate
AU - Ohana-Levi, Noa
AU - Mintz, Danielle Ferman
AU - Hagag, Nave
AU - Stern, Yossi
AU - Munitz, Sarel
AU - Friedman-Levi, Yael
AU - Shacham, Nir
AU - Grünzweig, José M.
AU - Netzer, Yishai
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/1/1
Y1 - 2022/1/1
N2 - Water availability in vineyards varies in space and time. The spatiotemporal variability of water availability to vines is affected by terrain, meteorology, and irrigation. This study aimed to analyze the response of vegetative and reproductive attributes of vines to spatiotemporal variability in water availability. We quantified the spatial autocorrelation of terrain covariates and grapevine attributes and determined the relative influence (RI) of the covariates on these attributes. In each of four growing seasons (2017–2020), in a Vitis vinifera cv. “Sauvignon Blanc” vineyard, five vegetative and reproductive attributes were collected for 240 vines. Terrain covariates included elevation, slope, aspect, topographic wetness index, and categorical landforms; and meteorological covariates consisted of annual rainfall and chilling hours. A Moran's I statistic was computed for each spatial covariate and each grapevine attribute during each season to define temporal changes in spatial variability. A multivariate analysis using gradient boosted regression trees algorithm was applied to extract the RI of the covariates. The results showed high spatial autocorrelation of the terrain covariates and a strong negative shift in spatial dependency of the grapevine attributes throughout the experiment. Yield and number of clusters per vine were highly affected by seasonal precipitation (RI of 46.15% and 42.59%), while changes in inter-seasonal cluster weight and pruning weight were highly subjected to irrigation amounts (RI of 23% and 26.66%), with complementary terrain influences. The number of canes per vine was mainly affected by terrain characteristics. Long-term changes in grapevine attributes depended on meteorological shifts, while higher precipitation amounts were associated with weaker responses of vines to irrigation strategies. The spatial patterns of terrain affected water distribution in the vineyard and controlled the spatial dynamics of grapevine attributes. Knowledge regarding the space-time trends of water availability effects on grapevine attributes may assist decision making of irrigation practices in vineyards.
AB - Water availability in vineyards varies in space and time. The spatiotemporal variability of water availability to vines is affected by terrain, meteorology, and irrigation. This study aimed to analyze the response of vegetative and reproductive attributes of vines to spatiotemporal variability in water availability. We quantified the spatial autocorrelation of terrain covariates and grapevine attributes and determined the relative influence (RI) of the covariates on these attributes. In each of four growing seasons (2017–2020), in a Vitis vinifera cv. “Sauvignon Blanc” vineyard, five vegetative and reproductive attributes were collected for 240 vines. Terrain covariates included elevation, slope, aspect, topographic wetness index, and categorical landforms; and meteorological covariates consisted of annual rainfall and chilling hours. A Moran's I statistic was computed for each spatial covariate and each grapevine attribute during each season to define temporal changes in spatial variability. A multivariate analysis using gradient boosted regression trees algorithm was applied to extract the RI of the covariates. The results showed high spatial autocorrelation of the terrain covariates and a strong negative shift in spatial dependency of the grapevine attributes throughout the experiment. Yield and number of clusters per vine were highly affected by seasonal precipitation (RI of 46.15% and 42.59%), while changes in inter-seasonal cluster weight and pruning weight were highly subjected to irrigation amounts (RI of 23% and 26.66%), with complementary terrain influences. The number of canes per vine was mainly affected by terrain characteristics. Long-term changes in grapevine attributes depended on meteorological shifts, while higher precipitation amounts were associated with weaker responses of vines to irrigation strategies. The spatial patterns of terrain affected water distribution in the vineyard and controlled the spatial dynamics of grapevine attributes. Knowledge regarding the space-time trends of water availability effects on grapevine attributes may assist decision making of irrigation practices in vineyards.
KW - Irrigation management
KW - Spatial autocorrelation
KW - Spatiotemporal analysis
KW - Terrain
KW - Vineyard
KW - Water availability
UR - http://www.scopus.com/inward/record.url?scp=85116660903&partnerID=8YFLogxK
U2 - 10.1016/j.agwat.2021.107226
DO - 10.1016/j.agwat.2021.107226
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
AN - SCOPUS:85116660903
SN - 0378-3774
VL - 259
JO - Agricultural Water Management
JF - Agricultural Water Management
M1 - 107226
ER -
