Aclimatização de mudas micropropagadas de bananeira 'Grand Naine' com aplicação de biofertilizantes em duas estações do ano
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Data
2012-08-01
Autores
Nomura, Edson Shigueaki
Damatto Junior, Erval Rafael
Fuzitani, Eduardo Jun
Saes, Luis Alberto
Jensen, Evelyn [UNESP]
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ISSN da Revista
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Editor
Universidade Federal de Viçosa (UFV)
Resumo
A utilização de mudas de bananeira micropropagadas de qualidade é o primeiro passo na implantação de um bom pomar e, para isso, sua aclimatização deve ser realizada de forma adequada. em vista disso, objetivou-se, neste trabalho, avaliar o desempenho dos biofertilizantes HUMITEC® e RUTER AA® no desenvolvimento de mudas de bananeira micropropagadas, sendo instalado um experimento em viveiro comercial de produção de mudas. Foram utilizadas mudas de bananeira cv. Grand Naine, obtidas por micropropagação, sendo, posteriormente, transplantadas em sacos de polietileno preto (1,5 L), contendo, como substrato, terra de subsolo (Latossolo Amarelo), casca de arroz carbonizada e composto orgânico Organifol® (1:1:1). O delineamento experimental foi em blocos ao acaso, fatorial 2 x 4 (produtos e doses), com quatro repetições e quatro plantas úteis por parcela. Os tratamentos foram compostos pelos seguintes biofertilizantes e doses: HUMITEC® (0,0; 4,0; 8,0; 16,0 mL planta-1) e RUTER AA® (0,0; 2,0; 4,0; 8,0 mL planta-1). As doses dos produtos foram divididas em duas aplicações (28 e 56 dias após o transplantio das mudas), aplicadas via fertirrigação. Noventa e oito dias após o transplantio avaliaram-se as seguintes variáveis: altura das plantas (cm), diâmetro do colo rente superfície do solo (mm), área foliar total e por folha, biomassas fresca e seca da parte aérea e das raízes (g). Os dados foram submetidos análise da variância e quando o teste F foi significativo, realizou-se análise de regressão. Pode-se concluir que aplicações de HUMITEC® e RUTER AA® favoreceram o desenvolvimento das mudas e que, no verão, as plantas apresentaram maior desenvolvimento durante a aclimatização.
The use of quality micropropagated banana seedlings is the first step for a successful orchard establishment and the acclimatization of seedlings must be done properly. This study aimed to evaluate the performance of the biofertilizers HUMITEC® and RUTER AA® on the development of micropropagated banana seedlings produced in commercial seedling nurseries. Seedlings of cv. Grand Naine were obtained via micropropagation and subsequently transplanted into black polyethylene bags (1.5 L) containing subsurface soil (oxisol), rice hulls and the organic compost Organifol® (1:1:1). The experiment was arranged in a 2 x 4 factorial randomized blocks design (products and rates) with four replications and four plants per plot. The treatments were consisted of the following rates of biofertilizers: HUMITEC® (0.0, 4.0, 8.0, 16.0 mL plant-1) and AA RUTER® (0.0, 2.0, 4.0; 8.0 mL plant-1). Product rates were divided in two applications (28 and 56 days after seedling transplanting) applied by fertirrigation. The variables of this experiment were measured after 98 days of transplantation: plant height (cm), stem diameter (mm), total leaf area and individual leaf area, fresh and dry mass of shoots and roots (g). Data were submitted to variance analysis and F test, and when the treatment means were significant, regression equations were adjusted. The results showed that application of HUMITEC® and RUTER AA® promoted the development of banana seedlings and that the seedlings showed higher development during acclimatization on summer.
The use of quality micropropagated banana seedlings is the first step for a successful orchard establishment and the acclimatization of seedlings must be done properly. This study aimed to evaluate the performance of the biofertilizers HUMITEC® and RUTER AA® on the development of micropropagated banana seedlings produced in commercial seedling nurseries. Seedlings of cv. Grand Naine were obtained via micropropagation and subsequently transplanted into black polyethylene bags (1.5 L) containing subsurface soil (oxisol), rice hulls and the organic compost Organifol® (1:1:1). The experiment was arranged in a 2 x 4 factorial randomized blocks design (products and rates) with four replications and four plants per plot. The treatments were consisted of the following rates of biofertilizers: HUMITEC® (0.0, 4.0, 8.0, 16.0 mL plant-1) and AA RUTER® (0.0, 2.0, 4.0; 8.0 mL plant-1). Product rates were divided in two applications (28 and 56 days after seedling transplanting) applied by fertirrigation. The variables of this experiment were measured after 98 days of transplantation: plant height (cm), stem diameter (mm), total leaf area and individual leaf area, fresh and dry mass of shoots and roots (g). Data were submitted to variance analysis and F test, and when the treatment means were significant, regression equations were adjusted. The results showed that application of HUMITEC® and RUTER AA® promoted the development of banana seedlings and that the seedlings showed higher development during acclimatization on summer.
Descrição
Palavras-chave
desenvolvimento, micropropagação, Musa spp., Humitec®, Ruter AA®, development, micropropagation, Musa spp., Humitec®, Ruter AA®
Como citar
Revista Ceres. Universidade Federal de Viçosa (UFV), v. 59, n. 4, p. 518-529, 2012.