Data/hora: 13/06/2024 02:50:50

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 08/09/1993
Data da última atualização: | 08/09/1993
Autoria: | RABE, E.
Afiliação: | University of Stellenbosch, Stellenbosch 7600 H P van der Walt, Outspan Citrus Centre, P O Box 28, Nelspruit 1200.
Título: | Yield inprovenent in Shamouti orange trees in a subtropical climate.
Ano de publicação: | 1993
Fonte/Imprenta: | Citros Journal. v.3, n.3, p.23-26,1993.
ISBN: | 1018 - 953 X
Idioma: | Inglês
Conteúdo: | The Shamouti orange is a shy-bearing cultivar under subtropical conditions, especially in the early years of production. This may be associated with a general lack of adequate flowering intensitiy. Ezport market potential exists for this cultivar and increased plantings are advocated, provided methods can be developed for improving yield, particularly in young orchards. We have conducted trials in three orchards over two production seasons aimed at increasing yield by fail-applied paclobutrazol and girdling and  treatments. Significant (p < 0, 05) yield increases were obtained with faliarapplied low biuret urea (two 1% sprays, one week apart, six to eight weeks pre-blossom) in a mature orchard. This was not found in a younf orchard where flower intesity waslimiting. Girdling, at full bolossom (FB) or eight weeks before FB, also resulted in increased yields where N levels were adequate. Our data indicate that N levels around 2,6% seem to be optimal for Shamouti oranges. We suggest an orchard management programme to enable Shamouti orange orchards to obtain optimal bearing capacity commencing from ayoung age udner subtropical climatic conditions. Chemical nome used: B-[(4-chlorophenyl)methyl]-a-(1,1-dimethylethyl)-1H-1,2,4-triazole-1-ethanol (paclobutrazol).
Palavras-Chave: | Controle.
Thesagro: | Comercialização.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (2205-1) - ADC - AP - -- - 634.305 -  - 634.305 - DIS