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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945versão On-line ISSN 1806-9967

Resumo

SANTOS, Carlos Henrique dos et al. Flowering induction and vegetative development of 'Ponkan' mandarin (Citrus reticulata Blanco) by irrigation and paclobutrazol application. Rev. Bras. Frutic. [online]. 2004, vol.26, n.1, pp.8-12. ISSN 0100-2945.  http://dx.doi.org/10.1590/S0100-29452004000100005.

The aim of this research was to study the flowering out of season in no induction conditions and the vegetative development of 'Ponkan' mandarin by irrigation and paclobutrazol application. The experiment was carried out at the Faculty of Agricultural Sciences - UNESP/Botucatu, State of São Paulo. The treatments followed a randomized blocks experimental design, being distributed in split-splots, and two replications. Each experimental unit was represented per 16 plants, being 8 destined for the evaluations. The treatments consisted of two soil water potential, -0,03 e -0,05 MPa that constituted the main experimental unit and the paclobutrazol levels that represented the sub units. In the second year of the experiment the units were maintained and it was applied the paclobutrazol: 0; 500; 1000 e 2000 mg L-1, by foliar application, in the plants of the sub units. Both treatments was compared with the treatments without irrigation (control plants: -0,07MPa) and whitout paclobutrazol application plants. It was evaluated the following parameters: height, scion diameter medium, scion projection area, scion volume and stomatic condutance showing the plant's response to treatments. It was concluded that the paclobutrazol application and the irrigation did not influence the plant's flowering out of season and that the paclobutrazol levels influenced the growth of 'Ponkan' mandarin plants.

Palavras-chave : Citrus; paclobutrazol; growth; flowering; water soil potential.

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