Harvest season, productivity and physicochemical quality of peach fruits grown in Dois Vizinhos, Paraná State, Brazil

Nava, Gilmar Antônio; Kurschner, Eder Oneide; Paulus, Dalva

doi:10.5433/1679-0359.2020v41n6supl2p3011

Cited by 1 publication

(1 citation statement)

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“…In 2016, the average fruit set (42.81%) was twice as that observed in the following year (20.36%), showing that the environmental conditions of the 2016 harvest year were more favorable for the fruiting of most peach cultivars (Table 3). These data corroborate the data obtained by Nava, Kurschner and Paulus (2020), who observed that the productivity of most peach cultivars cultivated in the same experimental study area was higher in 2016 because of improved environmental conditions, especially the increased winter cold, with emphasis on the cultivars Bonão, Charme, and Eldorado.…”

Section: Resultssupporting

confidence: 91%

Phenology and fruit set of peach trees cultivated in Dois Vizinhos, Paraná State, Brazil

Barbieri¹,

Nava²

2022

Semina: Ciênc. Agrár.

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Understanding the dormancy phases and dynamics of commercial cultivars in the regions where they are grown allows for the implementation of different cultural practices and aids in the understanding of the temperature requirements for collaboration with genetic improvement programs. The objective of this study was to determine the budding, flowering, and fruit set rates of peach trees cultivated in the municipality of Dois Vizinhos, Southwestern Paraná, Brazil. The present work was developed using the collection of peach trees in the fruit growing sector of the Universidade Tecnológica Federal do Paraná. Sixteen peach cultivars were evaluated: Rubimel, Leonense, Coral, Marli, Charme, Riograndense, Douradão, Chimarrita, Granada, BR-1, Bonão, and Eldorado (all planted in 2009), as well as Regalo, Kampai, Fascínio, and Zilli (planted in 2014). The experimental design was completely randomized with four replications of one plant each, in a 16 × 2 bifactorial arrangement (cultivars × year/harvest). Phenology evaluations were performed weekly by counting open (anthesis) and sprouted flower buds, and the fruit set rate was measured just before fruit thinning. Flowering (%), budding (%), and fruit set (%) rates were calculated. It was found that the year/harvest 2016 promoted the highest rates of sprouting and fruit set. The Bonão cultivar showed greater flowering intensity and regularity in the crop years evaluated (2016 and 2017). Coral and Kampai present fruit sets with greater intensities and regularities when compared to the other cultivars evaluated under the climatic condition of the municipality of Dois Vizinhos. The Riograndense cultivar showed greater irregularity in flowering and fruit production.

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Section: Resultssupporting

confidence: 91%