Peach tree growth in a tropical climate: shoot formation and fruiting
2024
Penso, Gener, Augusto | Serafini, Gabriel, Antônio Dalapícula | Santos, Carlos, Eduardo Magalhães Dos | Picoli, Edgard, Augusto Toledo | Citadin, Idemir | Lauri, Pierre-Éric | Universidade Federal de Viçosa [Brasil] = Federal University of Viçosa [Brazil] = Université fédérale de Viçosa [Brésil] (UFV [Brésil]) | Universidade Tecnológica Federal do Paraná = Federal Technological University of Paraná [Curitiba, Brésil] (UTFPR) | Agrosystèmes Biodiversifiés (UMR ABSys) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Centre International de Hautes Etudes Agronomiques Méditerranéennes - Institut Agronomique Méditerranéen de Montpellier (CIHEAM-IAMM) ; Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Centre International de Hautes Études Agronomiques Méditerranéennes (CIHEAM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro) | To the Instituto Nacional de Meteorologia (INMET) for making meteorological data available at work. In memory of farmer Jorge Martins from the farm "Princesa da Mata" for allowing the experiment on his property. The Conselho Nacional de Desenvolvimento Cientifico (CNPq) provided funding by a scholarship to the first author to obtain the Ph.D. degree.
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Afficher plus [+] Moins [-]anglais. This study aimed to characterize the occurrence, duration, and intensity of the flushes of vegetative growth in two peach cultivars of Prunus persica L. Batsch, grown as a pioneer endeavor at a high-altitude tropical climate site in the State of Minas Gerais, Brazil. The observational experiment was carried out in 2017/18 and 2018/19 on the 'Tropic Beauty' and 'BRS Kampai' cultivars by an evaluation of the number and duration of flushes of vegetative growth during the year over two cycles. The number of fruit-bearing shoots, total number of leaves and shoot length were also assessed. At harvest, fruit load and diameter were determined and grouped into diameter ranges. The number of hours recorded at different temperature ranges, < 10.0 °C; 10.1-15.0 °C; 15.1-20.0 °C; 20.1-25.0 °C; > 25.1 °C, were summed separately and divided into daily and nightly periods. The peach tree has an unusual vegetative growth pattern when cultivated in a tropical area, which occurs in two flushes, with the first flush occurring from budbreak to fruit harvest between June and Sept, forming short shoots (less than 10 cm), with early shoot growth cessation, with a limited leaf number that can potentially diminish the supply of carbohydrates to the fruit, leading to smaller growth. The second flush occurs after harvest, between Oct and Dec, when there is an increase in daily temperature and precipitation, and no competition with fruits. Notabily, these second flush shoots grow with greater vigor and regularization of the growth cycle, forming fruit-bearing shoots with abundant leaf and flower buds for the next production cycle.
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