ADUBAÇÃO NITROGENADA E POTÁSSICA EM GOIABEIRAS ‘PALUMA’: I. EFEITO NA PRODUTIVIDADE E NA QUALIDADE Dos FRUTOS PARA INDUSTRIALIZAÇÃO

Amorim, Daniel Angelucci de; Rozane, Danilo Eduardo; Souza, Henrique Antunes de; Modesto, Viviane Cristina; Natale, William

doi:10.1590/0100-2945-051/14

Cited by 18 publications

(16 citation statements)

References 2 publications

(2 reference statements)

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“…The 'Paluma' guava fruit can be utilized in both in natura consumption and industrially; in this case, mainly candy and pulp production. Thus, a higher pulp/core ratio can be advantageous for industrial yield (Amorim et al, 2015). The authors studying the same cultivar in Vista Alegre do Alto, SP obtained similar values to those found in this study.…”

Section: Daa Longitudinal Fruit Diameter (Mm) Transverse Fruit Diametsupporting

confidence: 86%

Phenology, yield and fruit quality of 'Paluma' guava tree at different pruning times

et al. 2016

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Pruning guava trees at different times is an important management tool that allows year-long staggering of fruit production. In this context, this study aimed to evaluate the phenological characteristics, yield and fruit quality of the 'Paluma' guava tree at different pruning times in Botucatu, SP. The study used a completely randomized design with four treatments, four replicates and a useful experimental plot plant. The treatments consisted of four different pruning times, August 27, September 11, September 26 and October 11. The following phenological phases were evaluated: branch establishment, flowering, early fruiting, fruit ripening and harvesting. It was determined the number of flower buds, fixed fruits and fixation index fruit were determined. The fruit growth curve was obtained by measuring the transverse and longitudinal diameter. At the time of harvest, the number of fruits per plant, yield and productivity were measured. In the harvested fruits, the fresh mass, the transverse and longitudinal diameter, the flesh and core thickness, the flesh and core mass, soluble solids, titratable acidity and pH were determined. The 'Paluma' guava trees pruned in August showed higher phenological stage durations than the other pruning times; however, those pruned in early September showed higher fixation index fruit, fruit yield and better physical characteristics. The guava trees pruned in August showed lower titratable acidity values and higher soluble solids/titratable acidity ratio.Index terms: Psidium guajava L.; fruit growth; fruit set; fixation index. RESUMOA poda da goiabeira em diferentes épocas é uma importante prática de manejo que permite a produção escalonada dos frutos ao longo do ano. Nesse contexto, o presente trabalho teve como objetivo avaliar as características fenológicas, produtivas e de qualidade de frutos da goiabeira 'Paluma' em função de diferentes épocas de poda em Botucatu, SP. Foi utilizado o delineamento inteiramente casualizado, com quatro tratamentos, quatro repetições e uma planta útil por parcela experimental. Os tratamentos consistiram em quatro diferentes épocas de poda de goiabeiras 'Paluma', sendo elas: 27 de agosto, 11 de setembro, 26 de setembro e 11 de outubro. Foram avaliadas as seguintes fases fenológicas: estabelecimento de ramos, florescimento, início da frutificação, maturação dos frutos e colheita. Foi determinado o número de botões florais, número de frutos fixados e o índice de pegamento de frutos. A curva de crescimento de frutos foi obtida através da medição semanal do diâmetro transversal e longitudinal dos frutos. Na ocasião da colheita foi avaliado o número de frutos por planta, a produção e a produtividade. Nos frutos colhidos determinou-se a massa fresca; diâmetro transversal, longitudinal e sua relação; espessura do mesocarpo -polpa, e do endocarpo -miolo; massa de polpa e miolo e suas relações; teor de sólidos solúveis, acidez titulável e sua relação e pH. As goiabeiras 'Paluma' podadas no mês de agosto apresentaram maior duração das fases fenológic...

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Section: Daa Longitudinal Fruit Diameter (Mm) Transverse Fruit Diametsupporting

confidence: 86%

Phenology, yield and fruit quality of 'Paluma' guava tree at different pruning times

et al. 2016

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“…In studies with other fruit such as passion fruit (Passiflora edulis Sims.) (Venâncio et al, 2013), papaya (Carica papaya L.) (Souza et al, 2009), guava (Psidium guajava L.) (Amorim et al, 2015), a low influence of nitrogen fertilization on the levels of fruit soluble solids, was detected in accordance with the obtained results in this research, which were pooled for subsequent analyses.…”

Section: Discussionsupporting

confidence: 91%

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et al. 2017

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This study aimed to evaluate the effect of nitrogen fertilization on the physical and physico-chemical characteristics and antioxidant potential of sapodilla at different stages of development. The experiment was installed at the Norfruit farm, located in the rural community of Pau Branco, Mossoró/RN, Brazil. A randomized block with two factorial schemes experimental design, was adopted. The first 5 x 6 with lost parcels, consisting of five doses of nitrogen (N) (0, 300, 600, 900 and 1200 g of N.plant ) and six stages of fruit development; and the second 2 x 3 consisting of two levels of nitrogen (N) (0; 600 g of N plant -1) and three stages of development, both with five replications. The fruits were labeled with a 10 to 15 mm long mark in the plant. In fact, were harvested and analyzed after 90, 120, 150, 180 and 200 days of its marking and 208 days (fully mature, after 8 days of storage at 25 ± 2 °C and RH 58 ± 5%), respectively. The results showed a nitrogen fertilization at the dose of 600 g of N.plant -1 , produced fruit with higher sugar content and fresh weight, reaching greater mass and sugar content, at 200 and 180 days of fruit development, respectively. An increase in nitrogen fertilization, promoted a reduction in the levels of yellow flavonoids and anthocyanins. Bioactive compounds (total polyphenols, vitamin C, flavonoids and anthocyanins) and sapodilla antioxidant activity decreased with the further development of fruit. The antioxidant activity of the sapodilla is more related to the high content of total polyphenols. The knowledge obtained in this study is extremely important for the sapodilla production chain due to information of the nutritional and antioxidant composition of the fruits. This also proves beneficial for the fruit marketing, because nowadays the public seeks foods rich in antioxidants, and the sapodilla is marketed both in natura and processed, in addition to its use in the cosmetics manufacture.Key words: Bioactive compounds, chemical composition of fruits, mineral nutrition, ripening. ResumoEsse trabalho objetivou avaliar o efeito da adubação nitrogenada nos caracteres físico, físico-químico e potencial antioxidante do sapoti em diferentes estádios de desenvolvimento. O experimento foi instalado na fazenda Norfruit, localizada na comunidade rural de Pau Branco, município de Mossoró/RN. O delineamento adotado foi em blocos casualizados com dois esquemas fatoriais, o primeiro 5 x 6 com parcelas perdidas, composto por cinco doses de nitrogênio (N) (0; 300; 600; 900 e 1200 g de N planta -1 ) e seis estádios de desenvolvimento do fruto; e o segundo 2 x 3, composto por duas doses de nitrogênio (N) (0; 600 g de N planta -1 ) e três estádios de desenvolvimento, ambos com cinco repetições. Os frutos foram marcados com 10 a 15 mm de comprimento na planta; sendo colhidos e avaliados após 90, 120, 150, 180 e 200 dias de sua marcação e 208 dias (completamente maduros, após 8 dias de armazenamento a 25 ± 2 °C e UR 58 ± 5%). Os resultados obtidos permitiram concluir que a adubação n...

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“…Ramos et al (2010) in study about guava cv. Paluma at five years old recorded in maximum 55.82kg per plant, while Amorim et al (2015) in study with seven years old guava plants recorded 175kg per plan, this higher than 40kg per plant registered in the present study. Accordingly, plant age has a direct impact on guava fruit production and the plants of the present study were 2 years old at the first fruit harvest.…”

Section: Fruit Productioncontrasting

confidence: 68%

Fruit production and quality of guava as a function of biofertilizer and nitrogen fertigation in semiarid

Santana

Cavalcante

Brito

et al. 2017

Emir. J. Food Agric

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ADUBAÇÃO NITROGENADA E POTÁSSICA EM GOIABEIRAS ‘PALUMA’: I. EFEITO NA PRODUTIVIDADE E NA QUALIDADE Dos FRUTOS PARA INDUSTRIALIZAÇÃO

Cited by 18 publications

References 2 publications

Phenology, yield and fruit quality of 'Paluma' guava tree at different pruning times

Phenology, yield and fruit quality of 'Paluma' guava tree at different pruning times

Untitled

Fruit production and quality of guava as a function of biofertilizer and nitrogen fertigation in semiarid

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