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Registros recuperados: 6
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Dimensionamento amostral para avaliação de altura e diâmetro de mudas de nogueira-pecã Ciência Rural
Cargnelutti Filho,Alberto; Poletto,Tales; Muniz,Marlove Fátima Brião; Baggiotto,Carine; Poletto,Igor; Fronza,Diniz.
O objetivo deste trabalho foi determinar o tamanho de amostra (número de plantas) necessário para a estimação da média de altura de planta, do diâmetro do coleto e da relação altura de planta/diâmetro do coleto de mudas de nogueira-pecã (Carya illinoinensis) e verificar a variabilidade do tamanho de amostra entre tratamentos de superação de dormência de sementes. Foram avaliados 12 tratamentos de superação de dormência de sementes e, aos 98 dias após a semeadura, foram mensurados os caracteres altura de planta (H) e diâmetro do coleto (D), e calculada a relação altura de planta/diâmetro do coleto (HD). Foram calculadas medidas de tendência central e de variabilidade, verificadas a normalidade e a homogeneidade de variâncias e calculado o tamanho de...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Carya illinoinensis; Planejamento experimental; Amostragem.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014001202151
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Interaction between maturity stages and temperature on quality of ‘Guarani’ blackberries stored under controlled atmosphere Ciência Rural
Brackmann,Auri; Thewes,Fabio Rodrigo; Anese,Rogerio de Oliveira; Gasperin,Adriano Roque de; Fronza,Diniz.
ABSTRACT: The aim of this research was to evaluate the interaction between maturity stages and temperature on fruit quality of ‘Guarani’ blackberries stored under controlled atmosphere (CA). The experiment was conducted in a factorial scheme (2x2), evaluating two ripening stages (E1: red-color and E2: black-color of fruits) and two temperatures (1°C and 5°C). The fruit were stored in CA (10.0kPa O2+15.0kPa CO2) and 98±1% of relative humidity (RH). Results showed that the principal component 1 (PC I) and principal component 2 (PC II) corresponded to 92.84% of the overall variation of the evaluated variables. Harvest should not be performed in the early maturity stage, because ‘Guarani’ blackberries do not develop all quality of consumer. ‘Guarani’...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rubus fruticosus; Postharvest; Fruit quality; Small fruit.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600780
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Pecan cultivation: general aspects Ciência Rural
Fronza,Diniz; Hamann,Jonas Janner; Both,Vanderlei; Anese,Rogério de Oliveira; Meyer,Evandro Alcir.
ABSTRACT: Given the increasing investment in the pecan production in southern Brazil, it becomes necessary researches, assisting in solve problems and proposition of technical and methodology to enhance this production chain. Thus, the present review aimed to survey the existing information about the culture, both on the world and the Brazilian scene. Issues related to botany, climate and soil requirements, alignment and planting density, cultivars, pests and diseases, among other technical aspects of this culture will be addressed. Pecan nut presents nutraceutical properties that are beneficial to human health, which has increased its demand from consumers. However, there are few research results with pecan nut in Brazil and there are many gaps in...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carya illinoinensis (Wangenh.) K. Koch; Management; Pollination; Cultivars..
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000200201
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Relative humidity during cold storage on Postharvest quality of 'Niagara Rosada' table grapes Ciência Rural
Pinto,Josuel Alfredo Vilela; Schorr,Márcio Renan Weber; Thewes,Fabio Rodrigo; Ceconi,Deiverson Luiz; Both,Vanderlei; Brackmann,Auri; Fronza,Diniz.
This study aimed to evaluate the effect of different levels of relative humidity (RH) on the maintenance of Postharvest quality of 'Niagara Rosada' table grapes after cold storage at 0.5°C for 21 days. A completely randomized design was used, with five replicates of 18 clusters per treatment. The selected levels of relative humidity were 85, 90, 95 and 100%, obtained by means of electronic humidity controllers. The fruits were evaluated in relation to rot incidence, berry cracking, browning rate, respiratory rate, titratable acidity, soluble solids, resistance to abscission, berry drop and weight loss. The evaluations were assessed at 20 days of storage and after two and four days of shelf-life (20°C; 85% RH). The results showed that as higher as relative...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Vitis labrusca; Table grapes; Physiological disorders; Weight loss.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015000300386
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Storability of ‘Tupy’ and ‘Guarani’ blackberries in controlled atmosphere Bragantia
Brackmann,Auri; Anese,Rogerio de Oliveira; Thewes,Fabio Rodrigo; Fronza,Diniz; Hamann,Jonas Janner.
ABSTRACT The aim of this work was to compare the storage potential of ‘Guarani’ and ‘Tupy’ blackberries in controlled atmosphere (CA) and thereafter to determinate the best CA storage conditions for ‘Tupy’ blackberries. Two experiments were carried out. In the first one, ‘Guarani’ and ‘Tupy’ blackberries were stored in CA condition (10 kPa O2 + 15 kPa CO2). We found that ‘Tupy’ blackberry has the best storage potential. Therefore, in the second experiment, several CA conditions were evaluated for ‘Tupy’ blackberries storage, as follows: [1] cold storage (CS): 20.9 kPa O2 + 0.04 kPa CO2; [2] CA with 10 kPa O2 + 15 kPa CO2; [3] CA with 5 kPa O2 + 15 kPa CO2; [4] CA with 10 kPa O2 + 10 kPa CO2. All treatments were stored at 1 °C and 98% (± 1) of relative...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rubus spp.; Oxygen; Carbon dioxide; Conservation; Small fruit.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052016000200240
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Water consumption of the estevia (Stevia rebaudiana (Bert.) Bertoni) crop estimated through microlysimeter Scientia Agricola
Fronza,Diniz; Folegatti,Marcos Vinícius.
The knowledge of water requirement of crops in the different growing phases elicits higher crop yield and rational use of water resource. The aim of this work was to estimate the water consumption of stevia using two constant watertable microlysimeters. The research was conducted in San Piero a Grado, Pisa, Italy. The data were collected daily from June, 1st, to October, 22th, 2000. Reference evapotranspiration was determined by the Penman-Monteith-FAO method, in the same period. Microlysimeters watertables level were maintained at the 35 cm depth. Crop evapotranspiration for the total cicle (80 days) was 464 mm. For the most water consuming phase, crop average evapotranspiration was 5.44 mm day-1. The crop coefficient values were 1.45 for the first 25...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Lysimeter; Water requirement; Evapotranspiration.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300028
Registros recuperados: 6
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