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      Maturação, qualidade e queda pré-colheita de maçãs 'imperial gala' em função da aplicação de aminoetoxivinilglicina Translated title: Maturation, quality and preharvest drop of 'imperial gala' apples by aminoethoxyvinilglycine application

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          Abstract

          Objetivou-se com o presente trabalho avaliar o efeito de diferentes doses e épocas de aplicação de aminoetoxivinilglicina (AVG) sobre a maturação, qualidade e queda pré-colheita de maçãs 'Imperial Gala'. O estudo foi realizado em pomar comercial localizado em Fraiburgo (SC). O delineamento experimental foi em blocos casualizados, com cinco repetições compostas de uma planta, sendo avaliados os seguintes tratamentos: 1. testemunha (sem aplicação); 2. 120 g ha-1 de AVG aplicado quatro semanas antes do ponto de colheita presumido (SAPC); 3. 60 g ha-1 de AVG (4 SAPC) + 60 g ha-1 de AVG duas semanas (SAPC); 4. 120 g ha-1 de AVG (2 SAPC); 5. 60 g ha-1 de AVG (2 SAPC) + 60 g ha-1 de AVG uma semana (SAPC); 6. 120 g ha-1 de AVG (1 SAPC); 7. 60 g ha-1 de AVG (1 SAPC); 8. 60 g ha-1 de AVG (1SAPC) + 60 g ha-1 de AVG no ponto de colheita (PC); 9. 60 g ha-1 de AVG (PC). O controle da maturação de maçãs 'Imperial Gala' através da aplicação de AVG foi variável com as épocas e doses utilizadas. AVG retarda o desenvolvimento da coloração vermelha de maçãs, porém quando os frutos são colhidos no ponto de colheita comercial não foram verificadas diferenças na coloração vermelha entre frutos tratados e não tratados com AVG. O uso de AVG determinou atraso no início da colheita, sendo verificado o aumento da massa média dos frutos em alguns tratamentos. Aplicações de AVG realizadas próximas do ponto de colheita e em doses maiores mostraram-se mais efetivas no controle da queda pré-colheita de maçãs 'Imperial Gala'.

          Translated abstract

          The objective of this study was to evaluate the effect of dose and time of aminoethoxyvinilglycine (AVG) application on the maturity, quality and preharvest drop of 'Imperial Gala' apples. The study was carried out in commercial orchard located in Fraiburgo/SC. The experimental design was a randomized block, with five replications of one tree. The treatments evaluated were: 1. control (no application) 2. 120 g ha-1 AVG applied 4 weeks before the predicted harvest date (WBPH), 3. 60 g ha-1 AVG (4 WBPH) + 60 g ha-1 AVG (2 WBPH); 4. 120 g ha-1 AVG (2 WBPH); 5. 60 g ha-1 AVG (2 WBPH) + 60 g ha-1 AVG (1 WBPH); 6. 120 g ha-1 AVG (1 WBPH); 7. 60 g ha-1 AVG (1 WBPH); 8. 60 g ha-1 AVG (1 WBPH) + 60 g ha-1 AVG at predicted harvest date (PH); 9. 60 g ha-1 AVG (PH). The efficiency of AVG application on maturation control of 'Imperial Gala' apples was dependent of time and dose sprayed. AVG reduced the development of red color, but when the fruits were harvested at commercial harvest date were not found differences on fruit red color between treated and untreated trees with AVG. AVG applications delayed the commercial harvest date, and increased the mean fruit weight in some treatments. High AVG concentrations sprayed closer of predicted harvest had more efficiency on preharvest fruit drop of 'Imperial Gala' apples.

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          Time of aminoethoxyvinylglycine application influences preharvest drop and fruit quality of 'McIntosh' apples

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            REGULATION OF ETHYLENE BIOSYNTHESIS IN FRUITS BY AMINOETHOXYVINYL GLYCINE AND 1-METHYLCYCLOPROPENE

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              • Record: found
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              Manejo da macieira no sistema de produção integrada de frutas

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Journal
                brag
                Bragantia
                Bragantia
                Instituto Agronômico de Campinas (Campinas )
                1678-4499
                2010
                : 69
                : 3
                : 599-608
                Affiliations
                [1 ] Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina Brazil
                [2 ] Universidade Federal de Pelotas Brazil
                Article
                S0006-87052010000300011
                10.1590/S0006-87052010000300011
                b2fc74ef-777c-4c2c-b15f-655209100cb1

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0006-8705&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                regulador de crescimento,manejo da colheita,abscisão de frutos,Malus domestica,growth regulator,harvest management,fruit abscission

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