| Registro completo |
| Provedor de dados: |
Rev. Bras. Frutic.
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| País: |
Brazil
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| Título: |
Effects of levels of nitrogen and potassium on yield and fruit maturation of irrigated guava trees in the São Francisco Valley
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| Autores: |
Lima,Maria Auxiliadora Coêlho de
Bassoi,Luís Henrique
Silva,Davi José
Santos,Polyane de Sá
Paes,Prissila de Castro
Ribeiro,Paula Rose de Almeida
Dantas,Bárbara França
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| Data: |
2008-03-01
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| Ano: |
2008
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| Palavras-chave: |
Psidium guajava L.
Nutrition
Maturity stages
Fruit quality
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| Resumo: |
Yield and physical and chemical characteristics of 'Paluma' guava fruit were evaluated as a function of the harvest at different maturity stages, under influence of nitrogen and potassium fertilization, in Petrolina, State of Pernambuco, Brazil. Fertilizer rates were 67 kg N + 33 kg K2O, 133 kg N + 67 kg K2O, 200 kg N + 100 kg K2O and 267 kg N + 133 kg K2O per hectare. Fruits were evaluated at maturity stages 2, 3, 4 and 5, established according to peel color. Higher doses of N and K induced higher yields. Nevertheless, fertilization with 200 kg of N + 100 kg of K per hectare improved fruit quality, delaying ascorbic acid breakdown and conserving pulp firmness. Main changes took place at maturity stages 4 and 5, when the fruit should present ideal conditions for consumption, namely the increase on soluble solids and soluble sugars content.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452008000100045
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| Editor: |
Sociedade Brasileira de Fruticultura
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| Relação: |
10.1590/S0100-29452008000100045
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| Formato: |
text/html
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| Fonte: |
Revista Brasileira de Fruticultura v.30 n.1 2008
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| Direitos: |
info:eu-repo/semantics/openAccess
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