Uso de reguladores de crescimento como alternativa tecnológica na cultura da macieira ‘Eva’ (Malus domestica Borkh.)
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Data
2011-08-18
Autores
Melo, Gisele Maria Santos de [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
O presente trabalho teve como objetivo avaliar os efeitos do prohexadione cálcio como fonte reguladora do crescimento vegetativo em macieiras e analisar possíveis incrementos na produção e na qualidade dos frutos em função dos principais problemas enfrentados na fruticultura moderna, que é o controle do vigor excessivo e a produção, tornando-se uma alternativa viável aos pomicultores. O experimento foi instalado na Fazenda Buriti Mirim (Angatuba/SP), no pomar comercial de macieira ‘Eva’ com plantas de dois anos de idade, na safra 2009/2010. O delineamento experimental utilizado foi em esquema fatorial 2 X 4, em parcelas subdivididas, formado por duas épocas de aplicação (fator principal) e quatro concentrações diferentes de prohexadione cálcio, produto comercial Viviful® (fator secundário), sendo os seguintes tratamentos: T1: 0 g p.c/ha, T2: 400 g p.c/ha, T3: 800 g p.c/ha, T4: 1200 g p.c/ha, T5: 0 g p.c/ha, T6: 400 + 400 g p.c/ha, T7: 800 + 800 g p.c/ha e T8: 1200 + 1200 g p.c/ha. O experimento ao todo foi composto por 256 plantas, distribuídas em quatro blocos casualizados, 8 plantas por tratamento, considerando como parcela útil apenas as 4 plantas centrais. A primeira aplicação do regulador foi realizada em todos os tratamentos aos 30 dias após a queda de pétalas, enquanto que a segunda aplicação foi realizada 27 dias após a primeira aplicação somente nos tratamentos T6, T7 e T8. Os resultados foram submetidos à análise de variância e as médias comparadas pelo teste de Tukey ao nível de 5% de probabilidade. Nas condições em que o experimento foi realizado, concluiu-se que prohexadione cálcio foi eficiente na redução do crescimento vegetativo dos ramos da macieira ‘Eva’, independente da concentração e do momento da aplicação, refletindo na redução do dossel da planta...
This study aimed to evaluate the effects of prohexadione calcium as a source of plant growth regulator on apples and possible increases in production and fruit quality in relation to the main problems faced in modern fruit, which is the control of excessive force and production, making it a viable alternative to apple growers. The experiment was conducted at Fazenda Buriti Mirim (Angatuba/SP), in a commercial orchard of apple ‘Eva’, with plants of two years of age, in 2009/2010. The experiment was a factorial 2 x 4 split plot, consisting of two application times (main factor) and four different concentrations of prohexadione calcium, commercial product Viviful® (secondary factor), and the following treatments: T1: 0 g pc/ha, T2: 400 g pc/ha, T3: 800 g pc/ha, T4: 1200 g pc/ha, T5: 0 g pc/ha, T6: 400 + 400 g pc/ha, T7: 800 + 800 g pc/ha, T8: 1200 + 1200 g pc/ha. The experiment consisted of a total of 256 plants, in four randomized blocks, eight plants per treatment, considering only the plot four central plants. The first application of the regulator was performed in all treatments at 30 days after the petals drop, while the second application was performed 27 days after the first application only in treatments T6, T7 and T8. The results were submitted to ANOVA and means compared by Tukey test at 5% probability. Under the conditions of the experiment was conducted, it was concluded that prohexadion calcium was effective in reducing vegetative growth of the branches of the apple ‘Eva’, independent of concentration and time of application, reflecting the reduction of the plant canopy, which favored... (Complete abstract click electronic access below)
This study aimed to evaluate the effects of prohexadione calcium as a source of plant growth regulator on apples and possible increases in production and fruit quality in relation to the main problems faced in modern fruit, which is the control of excessive force and production, making it a viable alternative to apple growers. The experiment was conducted at Fazenda Buriti Mirim (Angatuba/SP), in a commercial orchard of apple ‘Eva’, with plants of two years of age, in 2009/2010. The experiment was a factorial 2 x 4 split plot, consisting of two application times (main factor) and four different concentrations of prohexadione calcium, commercial product Viviful® (secondary factor), and the following treatments: T1: 0 g pc/ha, T2: 400 g pc/ha, T3: 800 g pc/ha, T4: 1200 g pc/ha, T5: 0 g pc/ha, T6: 400 + 400 g pc/ha, T7: 800 + 800 g pc/ha, T8: 1200 + 1200 g pc/ha. The experiment consisted of a total of 256 plants, in four randomized blocks, eight plants per treatment, considering only the plot four central plants. The first application of the regulator was performed in all treatments at 30 days after the petals drop, while the second application was performed 27 days after the first application only in treatments T6, T7 and T8. The results were submitted to ANOVA and means compared by Tukey test at 5% probability. Under the conditions of the experiment was conducted, it was concluded that prohexadion calcium was effective in reducing vegetative growth of the branches of the apple ‘Eva’, independent of concentration and time of application, reflecting the reduction of the plant canopy, which favored... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Reguladores de crescimento, Climatologia agricola, Maçã - Cultura
Como citar
MELO, Gisele Maria Santos de. Uso de reguladores de crescimento como alternativa tecnológica na cultura da macieira ‘Eva’ (Malus domestica Borkh.). 2011. vii, 67 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agronômicas de Botucatu, 2011.