Influência do sol nas características fisicas e químicas da tangerina 'Ponkan' cultivada no oeste do Paraná

Detoni, Alessandra Maria; Herzog, Neuza Francisca Michelon; Ohland, Tatiane; Kotz, Tailene Elisa; Clemente, Edmar

doi:10.1590/s1413-70542009000200041

Cited by 8 publications

(14 citation statements)

References 2 publications

(1 reference statement)

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“…Detoni et al (2009), ao avaliarem a influência do sol nas características físicas e químicas de tangerina 'Ponkan', também observaram que os frutos colhidos no quadrante com maior incidência solar foram os mais pesados.…”

Section: Resultsunclassified

“…Diversos autores relatam que a composição química dos frutos cítricos é afetada pela posição do fruto na árvore (SITES; REITZ, 1949;REITZ, 1950), cultivar copa e porta-enxerto (ES-PINOZA- NUNEZ et al, 2008), nutrição mineral (DUENHAS et al, 2002), além de fatores climáticos (DETONI et al, 2009).…”

Section: Introductionunclassified

“…Dentre os índices de qualidade dos citros influenciados pela luz, destacam-se tamanho, firmeza, concentração de sólidos solúveis, acidez, cor da epiderme, teor de vitamina C, entre outros (DETONI et al, 2009).…”

Section: Introductionunclassified

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Características físico-químicas da laranja-pera em função da posição na copa

Lemos¹,

Siqueira²,

Salomão³

et al. 2012

Rev. Bras. Frutic.

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RESUMO -O objetivo foi avaliar as características físico-químicas dos frutos colhidos em diferentes posições da copa de laranjeiras 'Pera'. A copa foi dividida em três alturas (basal, intermediária e apical), dois lados (lados opostos da copa, voltados para as entrelinhas -leste e oeste) e duas posições (periferia e 30 cm para o interior da copa). A colheita dos frutos ocorreu em 09-07-09. Os frutos da periferia da copa apresentaram maiores valores de massa fresca, diâmetro longitudinal, diâmetro transversal, espessura do flavedo, teor de sólidos solúveis, índice de maturação e coloração da casca mais amarela que os frutos da parte interna da copa. Quanto às concentrações de vitamina C e acidez titulável, os frutos colhidos da periferia da copa foram os que continham menores concentrações. Em relação à altura da copa, observou-se que, nos frutos colhidos na parte apical da copa, a massa fresca e o diâmetro longitudinal foram maiores do que nos colhidos da parte basal. Nos frutos voltados para a face oeste, verificaram-se os maiores teores de sólidos solúveis e índice de maturação. Termos para indexação: amostragens, Citrus sinensis, ponto de colheita. PHYSICAL AND CHEMICAL CHARACTERISTICS OF 'PÊRA' ORANGE FROM DIFFERENT POSITIONS OF THE CANOPYABSTRACT-The aim of this work was to evaluate the physical and chemical characteristics of fruit harvested from different positions of the canopy of 'Pêra' orange tree. The canopy was divided into three heights (basal, intermediate and apical), two sides (opposite to the canopy, toward the inter rows -East and West) and two positions (periphery and 30 cm into the inner part of the canopy). Harvest was made on July 9 th , 2009. Fruit in the periphery of the canopy presented greatest values of fresh mass, longitudinal diameter, transversal diameter and thickness of flavedo, content of soluble solids, maturation index and yellower coloration of the peel than the fruits in the inner part of the canopy. Concerning concentrations of C vitamin and titratable acidity, fruits collected from the periphery of the canopy were the ones with the lowest concentrations. For height of the canopy, fruit collected from the apical part of the canopy presented greatest fresh mass and longitudinal diameter than fruit collected form the basal part. It was verified greatest contents of soluble solids and maturation in the fruit turned to the West face.

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Section: Resultsunclassified

Section: Introductionunclassified

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Características físico-químicas da laranja-pera em função da posição na copa

Lemos¹,

Siqueira²,

Salomão³

et al. 2012

Rev. Bras. Frutic.

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“…Cruz et al (2010) found that the tangerine fruit Ponkan, located in the western quadrant of the canopy, presented higher weight values and juice yield than those located in the east quadrant. Detoni et al (2009) observed that the fruits developed in the orientation in which there is a higher incidence of sun, presented higher weight values and a longitudinal diameter. In a similar study, Molin et al (2012) characterised the orange tree yield in a commercial orchard and found the non-occurrence of spatial dependence and large spatial variability in the orchard, as was observed in this study.…”

Section: Spatial Distributionmentioning

confidence: 92%

Spatial variability of the yield and physical properties of orange (Citros sinensis [L.] Osbeck cv. Monte Parnaso) fruits

Nicolau¹,

Mercante²,

Maggi³

et al. 2017

Aust J Crop Sci

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Precision agriculture (PA) is used as a tool in the citrus industry and aims to increase production reduce costs and search for answers to explain the spatial variability of yield. The aim of this study was to model the spatial variability of yield and physical properties of fruits of orange trees in relation to the geographic quadrant where the fruits are on the trees. The experiment was carried out in a 1 ha commercial orchard of orange trees cv. Monte Parnaso. A GPS receiver and a total station were used to georeference the experimental area and the position of each sampled tree in the area, as well as the location of the geographic quadrant where the fruits sampled were on the trees. Twelve fruits were collected from each of the 13 sampled trees, resulting 39 fruits per quadrant, totalling 156 fruits each crop-year (2011 and 2012). Yield was estimated after the harvest (kg.quadrant -1 ). Physical analyses were performed for each fruit, measuring the following physical properties: equatorial diameter, total mass and juice yield. We conducted analysis of descriptive statistics and spatial variability in the data through techniques related to geostatistics. The results showed the highest spatial variability between the quarters for the juice yield and yield, and the verified juice yield was within the acceptable standard by regulatory bodies.

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“…The influence of the sun on the physical and chemical quality of 'Ponkan' tangerines was assessed by Detoni et al (2009), who concluded that the fruit collected in the East-West quadrant of the plant, where more sunlight occurred, had a greater weight and longitudinal diameter. Ramos et al (2003) (Caviglione et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Spatial variability of soil chemical attributes and productivity and the chemical and physical properties of oranges

et al. 2014

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A GPS receiver and a total station were used to measure the spatial location of the fruit and to determine which quadrant they were located in. In this experiment, 13 trees were studied. Twelve fruits were evaluated in each geographical quadrant, and 156 fruits were considered. After harvest, the productivity was expressed as kg per quadrant (kg quadrant -1 ). Next, physical tests (equatorial diameter (EqD), total fruit mass (TFM), juice yield (JY)) and chemical tests (total soluble solids (TSS), total titrable acidity (TTA), the TSS/TTA ratio, and the ascorbic acid (AA) content) were conducted in the laboratory. In addition, the data were subjected to analysis by descriptive statistics and geostatistics to determine the spatial variability of the physical and chemical properties of the oranges, the variations of the soil properties and the correlations between the following parameters: the pH properties of the fruit and Zn; TFM and K; EqD and K, and C and TSS. The orchard varies spatially, especially regarding the EqD, TFM, JcP, TSS and AA for the quadrants with the highest values (the Northwest, Southeast, Northeast, Southwest and Southeast, respectively). The soil potassium and zinc contents were strongly correlated with the physical and chemical properties of the orange fruits.

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Influência do sol nas características fisicas e químicas da tangerina 'Ponkan' cultivada no oeste do Paraná

Cited by 8 publications

References 2 publications

Características físico-químicas da laranja-pera em função da posição na copa

Características físico-químicas da laranja-pera em função da posição na copa

Spatial variability of the yield and physical properties of orange (Citros sinensis [L.] Osbeck cv. Monte Parnaso) fruits

Spatial variability of soil chemical attributes and productivity and the chemical and physical properties of oranges

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