Data/hora: 22/06/2024 07:18:10

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 13/04/2004
Data da última atualização: | 27/08/2018
Autoria: | QUAGGIO, J. A.; MATTOS JUNIOR, D.; CANTARELLA, H.; STUCHI, E. S.; SEMPIONATO, O. R.
Afiliação: | José Antônio Quaggio, Instituto Agronômico - IAC; Dirceu Mattos Junior, Instituto Agronômico/Centro Avançado de Pesquisa Tecnológica do Agronegócio de Citros Sylvio Moreira; Heitor Cantarella, Instituto Agronômico - IAC; Eduardo Sanches Stuchi, Estação Experimental de Citricultura de Bebedouro; Otávio Ricardo Sempionato, Estação Experimental de Citricultura de Bebedouro.
Título: | Sweet orange trees grafted on selected rootstocks fertilized with nitrogen, phosphorus and potassium.
Ano de publicação: | 2004
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 39, n. 1, p. 55-60, jan. 2004
Idioma: | Inglês
Notas: | Título em português: Laranjas-doce sobre diferentes porta-enxertos  adubadas com nitrogênio, fósforo e potássio.
Conteúdo: | 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.
Palavras-Chave: | citro; cobertura de copas; growth.
Thesagro: | Crescimento; Produtividade.
Thesaurus Nal: | canopy; Citrus; yields.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/108441/1/Sweet.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (26119-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS