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1. Approach for using trunk growth rate (TGR) in the irrigation scheduling of table olive orchards

Author:
Corell, M.; Martín-Palomo, M.J.; Pérez-López, D.; Centeno, A.; Girón, I.; Moreno, F.; Torrecillas, A.; Moriana, A.
Source:
Agricultural water management 2017 v.192 pp. 12-20
ISSN:
0378-3774
Subject:
Olea europaea,   etc   ; deficit irrigation; drought; farms; leaf conductance; olives; orchards; shrinkage; spring; trees; water potential; water stress; Spain;     Show all 13 Subjects
Abstract:
... The management of regulated deficit irrigation with a continuous measurement of the water status would allow obtaining an accurate estimation of the water needs. However, although different types of sensors are available, the threshold and daily management of these data are not clearly defined. Trunk diameter fluctuations are a good example of these type of data. The trunk growth rate (TGR) is con ...
DOI:
10.1016/j.agwat.2017.06.020

2. Three years of monitoring evapotranspiration components and crop and stress coefficients in a deficit irrigated intensive olive orchard

Author:
Conceição, Nuno; Tezza, Luca; Häusler, Melanie; Lourenço, Sónia; Pacheco, Carlos A.; Ferreira, M. Isabel
Source:
Agricultural water management 2017 v.191 pp. 138-152
ISSN:
0378-3774
Subject:
Olea europaea,   etc   ; autumn; crop coefficient; crops; deficit irrigation; drought; eddy covariance; evaporation; evapotranspiration; field capacity; heat; irrigation scheduling; leaf water potential; monitoring; olives; orchards; rain; sap flow; soil water; soil water content; spring; summer; time series analysis; transpiration; water stress; wet season; winter; Portugal;     Show all 28 Subjects
Abstract:
... A long-term experiment was conducted to study water use of olive trees in a six-year-old, deficit irrigated, intensive olive orchard (‘Arbequina’) in one of the driest regions of Southern Portugal. Woody agricultural crops are regularly cultivated with some water stress to maintain an equilibrium between the vegetative and reproductive cycles, to improve production quality and, when irrigated, to ...
DOI:
10.1016/j.agwat.2017.05.011

3. A simple and alternative approach based on reference evapotranspiration and leaf area index for estimating tree transpiration in semi-arid regions

Author:
Ayyoub, A.; Er-Raki, S.; Khabba, S.; Merlin, O.; Ezzahar, J.; Rodriguez, J.C.; Bahlaoui, A.; Chehbouni, A.
Source:
Agricultural water management 2017 v.188 pp. 61-68
ISSN:
0378-3774
Subject:
Olea europaea,   etc   ; Carya illinoinensis; Citrus; clementines; crop coefficient; data collection; eddy covariance; evapotranspiration; irrigation; leaf area index; olives; orchards; pecans; regression analysis; sap flow; semiarid zones; transpiration; trees; Mexico; Morocco;     Show all 20 Subjects
Abstract:
... The present work aims to develop a simple approach relating normalized daily sap flow (liters per unit of leaf area) and daily reference evapotranspiration (ET0) (mm/day). Two methods (FAO-Penman-Monteith (FAO-PM) and Hargreaves-Samani (HARG)) of the calculation of ET0 were tested in order to examine their impact on the established relationships. The data sets used for developing this approach are ...
DOI:
10.1016/j.agwat.2017.04.005

4. Assessing plant water status in a hedgerow olive orchard from thermography at plant level

Author:
García-Tejero, I.F.; Hernández, A.; Padilla-Díaz, C.M.; Diaz-Espejo, A.; Fernández, J.E
Source:
Agricultural water management 2017 v.188 pp. 50-60
ISSN:
0378-3774
Subject:
Olea europaea,   etc   ; air; canopy; carbon dioxide; crop coefficient; deficit irrigation; gas exchange; image analysis; intensive farming; irrigated farming; irrigation scheduling; leaves; olives; orchards; rainfed farming; stomatal conductance; temperature; thermography; trees; turgor; water potential; water shortages; water stress; water vapor; Mediterranean region; Spain;     Show all 26 Subjects
Abstract:
... Water scarcity is the most limiting factor in many irrigated areas of Mediterranean countries such as South Spain. Olive growing has been traditionally associated to rain-fed agriculture, although irrigation and practices related to intensive agriculture have been progressively introduced, requiring a more precise irrigation scheduling to save water. Thermal imaging is among the alternatives to as ...
DOI:
10.1016/j.agwat.2017.04.004