Data/hora: 05/06/2024 10:42:12

Provedor de dados: | 124
País: | Brazil
Título: | Carbohydrate levels in the leaves and production consistency of the Ponkan tangerine when thinned out with Ethephon
Autores: | Moreira,Rodrigo Amato; Ramos,José Darlan; Cruz,Maria do Céu Monteiro da; Pantoja,Lílian de Araújo; Santos,Alexandre Soares dos.
Data: | 2013-09-01
Ano: | 2013
Palavras-chave: | Citrus reticulata Blanco; Chemical thinning; Alternate bearing; Ethylene.
Resumo: | Management practices that maintain carbohydrate reserves in tangerines are necessary in order to ensure good yields. This experiment was carried out with the object of evaluating the levels of carbohydrates in the leaves, and consistency in the production of the Ponkan tangerine (Citrus reticulata Blanco) when subjected to chemical thinning with five concentrations of Ethephon for three consecutive years. The Ponkan tangerine evaluated had been grafted onto Rangpur lime (Citrus limonia Osbeck), cultivated with a spacing of 6.0 x 3.0 m and were 12 years old. The Ethephon concentrations tested were: 0; 200; 400; 600 and 800 mg L-1, applied in January of 2009; 2010 and 2011, when the fruits were of 25 to 30mm in transverse diameter. The experimental design was of randomized blocks, with four blocks and four plants per plot. The levels of soluble leaf carbohydrate, starch and total carbohydrates were evaluated during flowering and harvesting. Fifteen days after application of the concentrations, the percentage of thinning was evaluated. Production, pending load and alternate bearing were evaluated when harvesting. Chemical thinning with Ethephon favors the maintaining of leaf carbohydrates in the Ponkan tangerine. The most effective concentration in reduncing the alternate bearing in the Ponkan tangerine is 600 mg L-1 of Ethephon.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902013000300020
Editor: | Universidade Federal do Ceará
Relação: | 10.1590/S1806-66902013000300020
Formato: | text/html
Fonte: | Revista Ciência Agronômica  v.44 n.3 2013
Fonte: | info:eu-repo/semantics/openAccess