Data/hora: 13/06/2024 07:59:07

Provedor de dados: | 86
País: | Brazil
Título: | Sweet orange trees grafted on selected rootstocks fertilized with nitrogen, phosphorus and potassium
Autores: | Quaggio,José Antônio; Mattos Junior,Dirceu; Cantarella,Heitor; Stuchi,Eduardo Sanches; Sempionato,Otávio Ricardo.
Data: | 2004-01-01
Ano: | 2004
Palavras-chave: | Citrus; Growth; Yields; Canopy.
Resumo: | The majority of citrus trees in Brazil are grafted on 'Rangpur lime' (Citrus limonia Osb.) rootstock. Despite its good horticultural performance, search for disease tolerant rootstock varieties to improve yield and longevity of citrus groves has increased. The objective of this work was to evaluate yield efficiency of sweet oranges on different rootstocks fertilized with N, P, and potassium. Tree growth was affected by rootstock varieties; trees on 'Swingle' citrumelo [Poncirus trifoliata (L.) Raf. × C. paradisi Macf.] presented the smallest canopy (13.3 m³ in the fifth year after tree planting) compared to those on 'Rangpur lime' and 'Cleopatra' mandarin [C. reshni (Hayata) hort. ex Tanaka] grown on the same grove. Although it was observed an overall positive relationship between canopy volume and fruit yield (R² = 0.95**), yield efficiency (kg m-3) was affected by rootstocks, which demonstrated 'Rangpur lime' superiority in relation to Cleopatra. Growth of citrus trees younger than 5-yr-old might be improved by K fertilization rates greater than currently recommended in Brazil, in soils with low K and subjected to nutrient leaching losses.
Tipo: | Info:eu-repo/semantics/report
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2004000100008

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2004000100008
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.39 n.1 2004
Fonte: | info:eu-repo/semantics/openAccess