Data/hora: 03/07/2024 12:31:32

Biblioteca(s): 	Epagri-Sede.	
Data corrente: 	03/09/2019	
Data da última atualização: 	03/09/2019	
Autoria: 	SETE, P. B.; COMIN, J.; CIOTTA, M. N.; SALUMI, J. A.; THEWES, F.; BRACKMANN, A.; TOSELLI, M.; NAVA, G.; ROZANE, D. E.; LOSS, A.; LOURENZI, C. R.; COUTO, R. R.; BRUNETTO, G.	
Título: 	Nitrogen fertilization affects yield and fruit quality in pear.	
Ano de publicação: 	2019	
Fonte/Imprenta: 	Scientia Horticulturae, Netherlands, n. 258, p. 1-7, 2019.	
Idioma: 	Inglês	
Conteúdo: 	Mineralized nitrogen (N) from organic matter and decomposing residues in most soils are not always taken into
account. Little is known about the correct N application dose for pear trees to promote yield and fruit quality,
without increase the risk of N loss into the environment. The study aimed to evaluate the effect of N doses
application on N soil content, tree yield and fruit quality. The treatments consisted of the application of 0, 40, 80,
120 and 160 kg N ha&#8722;1 year-1, whereas urea was applied on the soil surface in September and February for 5
seasons (2011/12 to 2015/16). Leaves were collected, prepared and submitted to nutrient analysis. Fruit weight,
number and yield were evaluated. Soil samples were collected at 0-0.20 m for 3 seasons (2013/2014 to 2015/
2016), prepared and submitted to NH4 +-N and NO3?N analysis, and then mineral N content was calculated. Peel
color, ethylene production, and respiration rate were analyzed in the 2015/2016 crop season after 90 days inside
the controlled atmosphere storage chamber. The fruits were kept at ambient conditions for 7 days and evaluated
again for peel color, ethylene production and respiration rate, as well as destructive parameters such as titratable
acidity, soluble solids and pulp firmness. The doses of N application affect the fruit number and yield, but did not
affect leaf nutrient concentration. The highest N levels in the soil were observed in the 2014/2015 and 2015/
2016 crops. The most economical doses were 122.0, 66.4, 22.5 and 96.0 kg N ha-1 in the crops of 2011/2012,
2012/2013, 2013/2014 and 2015/2016 respectively
650 __ |a Nitrogen fertilization; Soil mineral N; Most economical dose; Fruit quality
700 __ |a COMIN, J.; CIOTTA, M. N.; SALUMI, J. A.; THEWES, F.; BRACKMANN, A.; TOSELLI, M.; NAVA, G.; ROZANE, D. E.; LOSS, A.; LOURENZI, C. R.; COUTO, R. R.; BRUNETTO, G.
856 __ |u http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_43167.pdf	
Palavras-Chave: 	Fruit quality; Most economical dose; Nitrogen fertilization; Soil mineral N.	
Categoria do assunto: 	F Plantas e Produtos de Origem Vegetal	
URL: 	http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_43167.pdf	
Registro original: 	Epagri-Sede (Epagri-Sede)	
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