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Temporal progress and spatial patterns of quiescent diseases in guava influenced by sanitation practices Scientia Agricola
Fischer,Ivan Herman; Soares-Colletti,Ana Raquel; Palharini,Maria Cecília de Arruda; Parisi,Marise Cagnin Martins; Amorim,Lilian.
ABSTRACT: Postharvest diseases are a major problem in guava crops as the symptoms normally appear during fruit ripening. This study aimed to detect and characterize the temporal dynamics and spatial patterns of the most important guava diseases in orchards with and without removal of crop residues as a sanitation practice. The experiment was conducted in an orchard of ‘Pedro Sato’ guavas, over two consecutive seasons, and data were collected from the flowering to the fruit ripening stage. In immature guavas treated with paraquat and ethrel, Colletotrichum spp. was detected from the 5th day of incubation. Anthracnose was detected in flowers at incidences higher than 50 % and black spot in fruit larger than 5.5 cm in length. The monomolecular and the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Colletotrichum; Guignardia; Psidium guajava; Postharvest fruit rot.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000100068
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Quality of ‘Oso Grande’ strawberries is affected by O2, CO2 and N2O concentrations during controlled atmosphere storage Bragantia
Cunha Junior,Luis Carlos; Morgado,Cristiane Maria Ascari; Jacomino,Angelo Pedro; Trevisan,Marcos José; Parisi,Marise Cagnin Martins; Corrêa,Gilmarcos de Carvalho; Teixeira,Gustavo Henrique de Almeida.
ABSTRACT Consumers around the world appreciate strawberries for their taste. They have low calories and high concentrations of soluble fibers, vitamin C and flavonoids. This paper verified the combined effect of O2, CO2, and N2O levels on ‘Oso Grande’ strawberries stored at 10° C, under controlled atmosphere (CA). Five different gas mixtures were used: 0.03 kPa CO2 + 20 kPa O2, 80 kPa N2O + 20 kPa O2, 90 kPa O2 + 10 kPa N2, 60 kPa O2 +40 kPa CO2, and 20 kPa O2 + 20 kPa CO2 + 60 kPa N2O. The lowest incidence of postharvest decay was observed with treatment20 kPa O2 + 20 kPa CO2 + 60 kPa N2O, followed by 80 kPa N2O +20 kPa O2 and 90 kPa O2 + 10 kPa N2. The treatment 60 kPa O2 + 40 kPa CO2 induced an increase in the production of acetaldehyde and ethanol, and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fragaria x ananassa Duch; Acetaldehyde; Ethanol; Multivariate analysis.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000200274
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