Data/hora: 01/06/2024 15:07:22

Biblioteca(s): | Epagri-Sede.
Tipo da produção científica: | Resumo em Anais de Congresso
Circulação/Nível: | -- - --
Data corrente: | 18/07/2011
Data da última atualização: | 18/07/2011
Autoria: | LEITE, G. B.; PETRI, J. L.; HAWERROTH, F. J.; COUTO, M.
Afiliação: | Epagri
Título: | Chemical Thinning After Blooming in Apples in Southern Brazilian Conditions.
Ano de publicação: | 2010
Fonte/Imprenta: | In: INTERNATIONAL HORTICULTURAL CONGRESS, 28., 2010, Lisboa. Book of Abstracts... Lisboa: ISHS, 2010.
Idioma: | Inglês
Conteúdo: | The thinning is still a major technologic problem in the apple production in Brazil, mainly due to the weather instability. ?Gala? apples and its clones have an intense blooming in axillary buds and under adverse conditions during the pollination may have a low fruit set, which prevents the thinning at blooming by producer. ?Fuji? apples show high fruit set levels, but this cultivar has predisposition to alternate production. Thinning substances like naphthalene acetic acid (NAA), carbaryl, ethephon and benzyladenine (BA) were sprayed alone or in mixture after blooming of ?Gala? and ?Fuji? apples, during three years. The evaluations were fruit set (%), number of fruits per tree and number of fruits per cross trunk sectional area, mean fruit weight (g) and fruit distribution according fruit size. Applications of NAA 10 mg.L-1 at 5 days after full bloom (DAFB) plus Maxcel® 2 L.ha-1 sprayed in fruits with diameter of 5-8 mm, and NAA 10 mg.L-1 + Maxcel® 2 L.ha-1 sprayed in fruits with diameter of 5-8 mm increased significantly the mean fruit weight of ?Gala? apples. The applications of NAA 15 mg.L-1 at 5 DAFB + Maxcel® 4 L.ha-1 and NAA 15 mg.L-1 at 5 DAFB + (ANA 15 mg.L-1 + Maxcel® 4 L.ha-1) in fruits with 5-8 mm were effective on increasing of mean fruit weight in ?Fuji? apples, but increased the number of small fruits with reduced growth . The replacement of NAA 15 mg.L-1 by Carbaryl at 1000 mg.L-1 also reveals efficient. The mixture of Carbaryl 1000 mg.L-1 plus Maxcel® 6 L.ha-1 increased the thinning efficiency when sprayed in fruits with diameter above of 10 mm.
Palavras-Chave: | Concentration; Growth regulators; n Thinning; Time of aplication.
Categoria do assunto: | --
URL: | http://intranetdoc.epagri.sc.gov.br/producao_tecnico_cientifica/DOC_4608.pdf
Registro original: | Epagri-Sede (Epagri-Sede)
Exemplares: | Epagri-Sede - (81242-1) - UPC - PL - -- -  -  -  - DIS