Assessing water stress in a high-density apple orchard using trunk circumference variation, sap flow index and stem water potential.
Fuji
Scilate
band dendrometer
dwarfing rootstocks
high density
sap flow
stem water potential
water stress
Journal
Frontiers in plant science
ISSN: 1664-462X
Titre abrégé: Front Plant Sci
Pays: Switzerland
ID NLM: 101568200
Informations de publication
Date de publication:
2023
2023
Historique:
received:
29
04
2023
accepted:
19
07
2023
medline:
21
8
2023
pubmed:
21
8
2023
entrez:
21
8
2023
Statut:
epublish
Résumé
Automated plant-based measurements of water stress have the potential to advance precision irrigation in orchard crops. Previous studies have shown correlations between sap flow, line variable differential transform (LVDT) dendrometers and fruit tree drought response. Here we report season-long automated measurement of maximum daily change in trunk diameter using band dendrometers and heated needles to measure a simplified sap flow index (SFI). Measurements were made on two apple cultivars that were stressed at 7 to 12 day intervals by withholding irrigation until the average stem water potential (Ψ Dendrometer measurements of maximum daily trunk shrinkage (MDS) were highly correlated (r² = 0.85) with pressure chamber measurements of stem water potential. The SFI measurements were less correlated with stem water potential but were highly correlated with evaporative demand (r² = 0.82) as determined by the Penman-Monteith equation (ET The high correlation of SFI to ET
Identifiants
pubmed: 37600171
doi: 10.3389/fpls.2023.1214429
pmc: PMC10435262
doi:
Types de publication
Journal Article
Langues
eng
Pagination
1214429Informations de copyright
Copyright © 2023 Wheeler, Black and Bugbee.
Déclaration de conflit d'intérêts
The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
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