Desenvolvimento do pessegueiro 'Flordaprince' sob duas intensidades de poda verde

Abstract

'FLORDAPRINCE' PEACH BEHAVIOUR AFTER TWO INTENSITIES OF GREEN PRUNING'Flordaprince' peach [Prunus persica (L.) Batsch] was submitted to two levels of green pruning intensity (mild and renewal), 45 days after harvest, with the objective of evaluating its effects on plant development, production, fruit quality and soluble carbohydrates in roots and branches. The experiment was carried out at University of São Paulo, Piracicaba, Brazil, in the 2003/2004 season. The experimental designed was entirely randomized, with two treatments and twelve replicates. Experimental unit comprised two plants at the 3,0 m x 1,2 m spacing and was conducted in central leader system. Biometric data collected were: effective flowering, sprouting, shoot length after green and winter pruning, quality and production of fruits, and soluble carbohydrates in roots and branches. Renewal pruning leads to lower soluble carbohydrate concentrations in the roots during dormancy. Renewal pruning also decreases fruit retention and Brix, even though it increases individual fruit weight. Green pruning intensities do not influence soluble carbohydrates concentration in branches, fruit growth or shoot growth after winter pruning. Soluble carbohydrate concentrations are always higher in the roots.

Poda verde e produção do pessegueiro em alta densidade

“…O diâmetro equatorial sutural (mm) e o diâmetro meridional (mm), também não diferiram significativamente da testemunha nos três anos de avaliação nas diferentes épocas de poda e não houve formação de frutos deformados (Tabela 3). Rodrigues et al (2009), avaliando o comprimento e diâmetro de frutos em poda leve e poda de renovação 45 dias após a colheita, não observaram diferença na produção de frutos em função das podas realizadas. Gomes et al (2005) consideraram a classificação do pêssego Chimarrita segundo o diâmetro da fruta em três categorias: tipo 1 -com diâmetro maior ou igual a 57 mm; tipo 2 -de 47 a 57 mm; e tipo 3 -de 44 a 47 mm.…”

“…Santa Áurea realizada a 40 dias antes da colheita não proporciona aumento no tamanho do fruto e no teor de sólidos solúveis totais (TREVISAN et al, 2008) e na cv. Flordaprince resultou em menor conteúdo de sólidos solúveis nos frutos (RODRIGUES et al, 2009). A diferença de resposta da planta à poda verde em função de condições distintas de cultivo justifica seu estudo em uma determinada situação regional, de forma a se identificar a eficiência de sua aplicação no sistema produtivo adotado.…”

Solar radiation absorption according to the tree crown conduction and the effects on peach cultivars production

“…In order to promote the best utilization of the productive area and the anticipation of the return of the invested capital, the fruit growers tend to implant more compact orchards and adopt different management systems for the crop. Studies regarding pruning (Trevisan et al, 2006, Rodrigues et al, 2009Galarça et al, 2013;Gonçalves et al, 2014) and orchards spacing (Giacobbo et al, 2003;Mathias et al, 2008;Mayer & Pereira, 2011) were developed, but all with limitations on the evaluation of the interception of solar radiation, since the evaluated characteristics were fruit production, color and quality.…”

Post-harvest quality of ‘BRS Kampai’ peach submitted to different pruning times

“…Given that the peach tree has distinct responses to different pruning types, research has been conducted regarding plant manipulation, which is aimed at farming mechanization, (Barbosa et al, 2000), harvest anticipation (Chalfun et al, 2002), improvements in fruit development and quality (Trevisan et al, 2008;Rodrigues et al, 2009;Gonçalves et al, 2014) and pest control (Grechi et al, 2010). Pruning carried out in different periods may change cultivar plant and production balance.…”