Data/hora: 01/06/2024 02:57:10

Provedor de dados: | 65
País: | Brazil
Título: | 3,5,6-trichloro-2-pyridinyloxyacetic acid as effective thinning agent for fruit of 'Montenegrina' mandarin
Autores: | Gonzatto,Mateus Pereira; Böettcher,Gerson Nestor; Schneider,Leonardo André; Lopes,Ângelo Azeredo; Silveira Júnior,Jairo Camargo; Petry,Henrique Belmonte; Oliveira,Roberto Pedroso de; Schwarz,Sergio Francisco.
Data: | 2016-12-01
Ano: | 2016
Palavras-chave: | Citrus deliciosa Ten. 3; 5; 6-TPA synthetic auxin ethephon alternate bearing.
Resumo: | ABSTRACT: The 'Montenegrina' mandarin ( Citrus deliciosa Tenore) is widely cultivated in southern Brazil. This cultivar has a great tendency for alternate bearing, requiring thining of the fruit. However, the chemical thinners studied until now in this cultivar have not been successful. The objective of this research was to evaluate the effect of 3,5,6-trichloro-2-pyridinyloxyacetic acid (3,5,6-TPA) on the production and fruit quality of the 'Montenegrina' mandarin, in comparison with hand thinning and the options of chemical thinning previously studied. Hand thinning and no thinning were used as controls. Ethephon was applied in three doses: 200mg L-1, 300mg L-1 or 200mg L-1 + 3% urea; or 3,5,6-TPA, in four doses: 10, 20, 30 or 40mg L-1. Fruits of the hand thinned trees and those treated with 40mg L-1 showed greater average size, greater distribution of commercial caliber and more orange colors. No treatment reduced alternate bearing. Applications of 40mg L-1 of 3,5,6-TPA as a chemical thinner, during the physiological drop of young fruit, had a similar effect that of hand thinning over yield and quality of fruits of 'Montenegrina' mandarin.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001202078
Editor: | Universidade Federal de Santa Maria
Relação: | 10.1590/0103-8478cr20140057
Formato: | text/html
Fonte: | Ciência Rural  v.46 n.12 2016
Fonte: | info:eu-repo/semantics/openAccess