Avaliação De Pessegueiros E Nectarineiras Introduzidos No Brasil, Procedentes Da Flórida, Eua

Barbosa, Wilson; Ojima, Mário; Dall’Orto, Fernando Antônio Campo; Martins, Fernando Picarelli; Castro, Jairo Lopes de; Santos, Rui Ribeiro dos

doi:10.1590/s0103-90161997000200007

Cited by 10 publications

(11 citation statements)

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“…Plants were allowed to produce flowers and fruit spontaneously, without using plant growth regulators to break dormancy. The need and the intensity of fruit thinning were annually determined by the criterion of the threefold-decrease of fruit quantity in the branches, to allow for better growth of the remaining fruit (Barbosa et al, 1997;Ramos & Leonel, 2008).…”

Section: Methodsmentioning

confidence: 99%

“…In (SP), the harvest begins earlier than in further south states of Brazil. The cultivars developed for SP, with varied fruit ripening cycles, meet market demands from September to February, providing consumers with different types of peaches and nectarines (Barbosa et al, 1997;Ramos & Leonel, 2008). Except for grape, which represents around 50% of the total area cultivated with fruit in São Paulo state, peach has gained importance as the main temperate fruit grown in the state, with around two million plants, including nectarine, which accounts for 15% of the peach culture in number of plants (Barbosa et al, 2003;Pedro Júnior et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Basal temperature and thermal sum in phenological phases of nectarine and peach cultivars

Souza

Leonel

Silva

2011

Pesq. agropec. bras.

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-The objective of this work was to evaluate basal temperature, thermal sum at different phenological stages, phenological phase duration, yield and seasonality of one nectarine and 14 peach cultivars, between 2006 and 2009. The considered phenological phases were: pruning-sprouting; sprouting-flowering, from swollen bud to open flower; flowering-fruiting, from petal fall to medium-sized fruit; and ripening. Minimum basal temperatures (Tb) obtained were: pruning-sprouting, 8°C, irrespective of the cultivars; sproutingflowering, 10°C, except for 'Cascata 968', which required 8°C Tb; flowering-fruiting, 12°C, except for 'Oro Azteca', which required 14°C Tb; ripening, 14°C, except for 'Sunblaze', 'Diamante Mejorado' and 'Precocinho' with 12°C Tb. For most cultivars, the maximum basal temperatures were 30, 34, 34 and 28ºC for phases pruning-sprouting, sprouting-flowering, flowering-fruiting and ripening, respectively. 'Turmalina', 'Marli' and 'Tropic Beauty' showed average yields of 3,945.0, 3,969.3 and 3,954.0 kg ha -1 , respectively, in 2009, while the nectarine 'Sunblaze' showed around 3,900 kg ha -1 in 2008 and 2009. The cultivars differed for their total cycle and for the accumulated thermal sums which varied, respectively, from 245 days and 1,881.4 degree-days for 'Oro Azteca', to144 days and 1,455.7 degree-days for 'Precocinho'.Index terms: Prunus persica, degree day, thermal unit. Temperatura basal e soma térmica em fases fenológicas de cultivares de nectarineira e pessegueiroResumo -O objetivo deste trabalho foi avaliar a temperatura basal, a soma térmica acumulada em diferentes fases fenológicas, a duração das fenofases, a produtividade e a sazonalidade do ciclo de uma cultivar de nectarina e de 14 cultivares de pêssego, entre 2006 e 2009. As fases fenológicas consideradas foram: podabrotação; brotação-florescimento, da gema inchada até a flor aberta; florescimento-frutificação, da queda das pétalas até o fruto médio; e maturação. As temperaturas basais mínimas obtidas foram: poda-brotação, 8°C, independentemente das cultivares avaliadas; brotação-florescimento, 10°C, com exceção de 'Cascata 968', que necessitou de Tb de 8°C; florescimento-frutificação, 12°C, exceto 'Oro Azteca', que necessitou de Tb de 14°C; maturação, 14°C, com exceção de 'Sunblaze', 'Diamante Mejorado' e 'Precocinho', com Tb de 12°C. Para a maioria das cultivares, as temperaturas basais máximas foram de 30, 34, 34 e 28ºC, nas fases poda-brotação, brotação-florescimento, florescimento-frutificação e maturação, respectivamente. 'Turmalina', 'Marli' e 'Tropic Beauty' apresentaram produtividade média de 3.945,0, 3.969,3 e 3.954,0 kg ha -1 , em 2009, respectivamente, enquanto a nectarineira 'Sunblaze' produziu em torno de 3.900 kg ha -1 em 2008 e 2009. As cultivares diferiram quanto ao ciclo total e quanto às somas térmicas acumuladas que variaram, respectivamente, de 245 dias e 1.881,4 graus-dia em 'Oro Azteca', a 144 dias e 1.455,7 graus-dia em 'Precocinho'.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Basal temperature and thermal sum in phenological phases of nectarine and peach cultivars

Souza

Leonel

Silva

2011

Pesq. agropec. bras.

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“…Chitarra and Chitarra (2005) concluded that pH in the peach can vary from 3.5 to 4.8. According to Barbosa et al (1997), the pH varied between 4.0 and 4.5 for peach cultivars and 3.6 and 4.5 for nectarine cultivars. The Sun Blaze nectarine evaluated in this trial presented pH values of 3.46 in 2009 and 3.16 in 2010.…”

Section: Resultsmentioning

confidence: 99%

Fruit quality in the peach and nectarine with application of hydrogenated cyanamide and mineral oil

Leonel¹,

Leonel²,

Tecchio³

2014

Rev. Ciênc. Agron.

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-This work evaluated the quality of the fruit in peach and nectarine cultivars with and without the application of hydrogenated cyanamide and mineral oil, for two production cycles (2009 and 2010). The experiment was carried out at the School of Agricultural Science of the São Paulo State University (UNESP), at Botucatu in the Brazilian state of São Paulo, located at latitude 22°51'55'' S and longitude 48°26'22" E, at an altitude of 810 m. The predominant climate type is warm temperate (mesothermal) with rains in the summer and dry in the winter. The following were evaluated: soluble solids, titratable acidity, pH, ratio, firmness, vitamin C and pulp yield. The use of hydrogenated cyanamide and mineral oil had no effect on the quality attributes of the fruit, except for pH, where those fruits under application of the products showed higher values. The cultivars all had a pulp yield greater than 90%, with 'Tourmaline' showing the highest yield (96 %). The levels of vitamin C varied according to the cultivars, where 'Marli' (16.9 mg 100 g -1 ) and 'Dourado-2' (16.5 mg 100 g -1 ), stood out for having the highest levels.

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“…According to Barbosa et al (1997), fruit setting percentages ranged from 10 to 55% for different peach cultivars. In Itapeva -SP, the fruit setting percentages reported for cultivars 'Douradão' and 'Aurora-1' were 44.9% and 57.5%, respectively (BARBOSA et al, 1999).…”

Section: The Accumulation Of Nch In August Wasmentioning

confidence: 99%

Yield and crop cycle time of peaches cultivated in subtropical climates and subjected to different pruning times

Ferraz

Leonel

Segantini

et al. 2015

SCA

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The cultivation of peaches in regions of subtropical and tropical climate is currently achieved through a set of practices such as using less demanding cultivars in cold conditions, applying plant growth regulators to break dormancy, and performing specific pruning, like production and renewal pruning. Research on the climate adaptation of cultivars is of great importance in establishing a crop in a given region. Therefore, the objective of this study was to evaluate the agronomic performance of three cultivars subjected to different production pruning times in Botucatu/SP, where 2-year old peach trees were evaluated, grown at a spacing of 6.0 x 4.0 meters. The experimental design was a split plot design with four blocks, using the cultivars Douradão, BRS Kampai and BRS Rubimel, and the subplots corresponded to pruning times in May, June, July and August. Ten plants were used per plot, with the four central plants considered useful and the remaining considered as margins. Pruning in June and July showed the best results in terms of percentage of fruit set and production. The cultivar BRS Rubimel showed the best percentage of fruit set when pruned in June (44.96%), and best fruit production when pruned in July (18.7 kg plant -1 ). Pruning in May anticipated the harvest of cultivar BRS Rubimel by 13 days whereas pruning carried out in July and August provided late harvests for cultivars Douradão and BRS Kampai. Key words: Agronomic performance, peach, production pruning, Prunus persica, regional behavior ResumoO cultivo de pêssegos, em regiões de clima subtropical e tropical, é conseguido atualmente através de um conjunto de práticas como o uso de cultivares menos exigentes em frio, a aplicação de reguladores vegetais para a quebra da dormência, e a realização de podas específicas, nomeadamente as de produção e de renovação. Os ensaios de aptidão climática de cultivares são de grande importância para o estabelecimento de uma cultura numa determinada região. Este trabalho teve como objetivo avaliar o comportamento agronômico de três cultivares de pessegueiro submetidas a diferentes épocas de poda de frutificação em Botucatu/SP, onde foram avaliados pessegueiros com dois anos de idade, cultivados no espaçamento de 6,0 x 4,0 m. O delineamento foi em parcelas subdivididas, com quatro blocos, utilizando-se as cultivares Douradão, BRS Kampai e BRS Rubimel, sendo as subparcelas correspondendo às épocas de poda em maio, junho, julho e agosto. Foram utilizadas 10 plantas por parcela experimental, sendo as quatro centrais consideradas plantas úteis e as demais consideradas bordadura. As podas realizadas em junho e julho apresentaram os melhores resultados em termos de porcentagem de fixação de frutos e produção por planta. A cultivar BRS Rubimel apresentou maior porcentagem de fixação quando podada em junho (44.96%) e maior produção de frutos quando podada em julho (18.70 kg planta -1 ). A poda realizada em maio antecipou a colheita da cultivar BRS Rubimel em 13 dias, enquanto que podas realizadas em julho e agosto ...

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Avaliação De Pessegueiros E Nectarineiras Introduzidos No Brasil, Procedentes Da Flórida, Eua

Cited by 10 publications

References 10 publications

Basal temperature and thermal sum in phenological phases of nectarine and peach cultivars

Basal temperature and thermal sum in phenological phases of nectarine and peach cultivars

Fruit quality in the peach and nectarine with application of hydrogenated cyanamide and mineral oil

Yield and crop cycle time of peaches cultivated in subtropical climates and subjected to different pruning times

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