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      Aclimatização de mudas micropropagadas de bananeira 'Grand Naine' com aplicação de biofertilizantes em duas estações do ano Translated title: Acclimatization of micropropagated 'Grand Naine' banana seedling with application of biofertilizers in two seasons

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          Abstract

          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.

          Translated abstract

          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.

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          Sisvar: a computer statistical analysis system

          Sisvar is a statistical analysis system, first released in 1996 although its development began in 1994. The first version was done in the programming language Pascal and compiled with Borland Turbo Pascal 3. Sisvar was developed to achieve some specific goals. The first objective was to obtain software that could be used directly on the statistical experimental course of the Department of Exact Science at the Federal University of Lavras. The second objective was to initiate the development of a genuinely Brazilian free software program that met the demands and peculiarities of research conducted in the country. The third goal was to present statistical analysis software for the Brazilian scientific community that would allow research results to be analyzed efficiently and reliably. All of the initial goals were achieved. Sisvar gained acceptance by the scientific community because it provides reliable, accurate, precise, simple and robust results, and allows users a greater degree of interactivity.
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            Physiological effects of humic substances on higher plants

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              Humus Chemistry : Genesis, Composition, Reactions

              A reference text focusing on basic organic chemistry and reactions of naturally occurring organic substances in soils. Covers pools of organic matter in soils, transformations, methods of extraction and fractionation. Section two deals primarily with the chemistry of known classes of organic compounds in soils including saccharides, lipids and constituents containing nitrogen, phosphorus and sulfur. Section three is concerned with basic organic chemistry of humic substances, followed by the importance of organic matter associations and interactions. Contains new chapters on NMR spectroscopy, analytical pyrolysis and on chemical structures.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rceres
                Revista Ceres
                Rev. Ceres
                Universidade Federal de Viçosa (Viçosa )
                2177-3491
                August 2012
                : 59
                : 4
                : 518-529
                Affiliations
                [1 ] Agência Paulista de Tecnologia dos Agronegócios Brazil
                [2 ] Agência Paulista de Tecnologia dos Agronegócios Brazil
                [3 ] Universidade Estadual Paulista Brazil
                Article
                S0034-737X2012000400013
                10.1590/S0034-737X2012000400013
                d2c361e1-96e3-420a-ba34-9f02764b5b41

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

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0034-737X&lng=en
                Categories
                AGRICULTURE, MULTIDISCIPLINARY

                General agriculture
                development,micropropagation,Musa spp.,Humitec®,Ruter AA®,desenvolvimento,micropropagação

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