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1. Modeling spring phenology and chilling requirements using the chill overlap framework

Author:
Pope, K. S.; DeJong, T. M.
Source:
Acta horticulturae 2017 no.1160 pp. 179-184
ISSN:
0567-7572
Subject:
Prunus dulcis; almonds; climate; climate change; crops; cultivars; frost; heat; models; orchards; ovules; phenology; prediction; risk; spring; temperature; California
Abstract:
... The timing of bloom and leaf-out has important implications for orchard systems. As temperatures continue to shift under climate change, it is important to be able to accurately model the impact of these changes on the timing of spring phenological events. Changing temperatures may impact cultivars differently, and interfere with pollinizer variety bloom overlap. Bloom windows may shift later or e ...
DOI:
10.17660/ActaHortic.2017.1160.26

2. Relationships between flower position, shoot structure and fertility for the main Tunisian almond cultivar 'Achaak'

Author:
Gouta, H.; Mezghani, A.; Daynouni, A.; Labidi, F.; Bouaza, A.; Tej, A.; Gouiaa, M.
Source:
Acta horticulturae 2017 no.1160 pp. 99-104
ISSN:
0567-7572
Subject:
almonds; buds; cultivars; flowers; fruit quality; fruits; genotype; markets; orchards; shoots; trees
Abstract:
... The Tunisian almond cultivar 'Achaak' is the most important in terms of market demand and fruit quality but unfortunately it is commonly considered as a low producing genotype. Some observations have indicated that this may be due to the lack of some major technical growing practices. However no much data is available to give a scientific explanation for this problem. The objective of this study i ...
DOI:
10.17660/ActaHortic.2017.1160.14

3. The L-ALMOND model: a functional-structural virtual tree model of almond tree architectural growth, carbohydrate dynamics over multiple years

Author:
DeJong, T. M.; Da Silva, D.; Negron, C.; Cieslak, M.; Prusinkiewicz, P.
Source:
Acta horticulturae 2017 no.1160 pp. 43-50
ISSN:
0567-7572
Subject:
almonds; branching; canopy; carbohydrates; carbon; fruit trees; models; mortality; orchards; peaches; plant organs; planting; pruning; shade; tree growth
Abstract:
... More than two decades of modelling research resulted in the L-PEACH model which used L-systems to simultaneously simulate the architectural development and carbohydrate dynamics (assimilation, transport, distribution, storage and remobilization) of growing peach trees. L-PEACH combined the supply/demand concepts of carbon allocation of a previous PEACH model with an L-systems model of tree archite ...
DOI:
10.17660/ActaHortic.2017.1160.7