Resíduos da indústria sucroenergética como componentes de substratos para produção de mudas pré-brotadas de cana-de-açúcar
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Data
2016-08-30
Autores
Lima, Felipe Biondi Fernandes de [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
A utilização de resíduos da indústria sucroenergética como substrato para a formação de mudas pré-brotadas torna o processo de produção cana-de-açúcar sustentável, sendo os próprios resíduos utilizados para uma nova geração da cultura. O presente trabalho teve como objetivo obter um substrato, composto por resíduos da indústria sucroenergética, adequado para a produção de mudas pré-brotadas de cana-de-açúcar. Os tratamentos foram constituídos pela combinação de três substratos isolados: torta de filtro, cinza e bagaço de cana-de-açúcar, os quais foram comparados a um substrato testemunha. Os tratamentos foram homogeneizados seguindo a proporção volume:volume e destas misturas foram realizadas as caracterizações físicas e químicas. Realizou-se o plantio dos minirrebolos em tubetes de 180 cm³, respeitando a densidade de cada material, e, então, os materiais foram levados para casa de vegetação por 90 dias. As mudas foram avaliadas quanto ao desenvolvimento da parte aérea, radicular, porcentagem de brotação e análise químicas das folhas. O delineamento experimental utilizado foi inteiramente casualizado, com dezoito repetições. Foi realizada a análise de variância e, quando significativa, as médias foram comparadas pelo teste de Scott-Knott, a 5% de probabilidade; foi realizado análise de correlação entre todos os resultados. As mudas cultivadas no substrato T2/10-C2/10-B6/10 apresentaram maior desenvolvimento da parte aérea e radicular, maior facilidade para retirada do tubete, menor densidade e maior quantidade de nutrientes.
The use of waste of sugarcane industry as substrate for the formation of pre-sprouted seedlings makes the process of sugarcane sustainable production, the waste itself used for a new generation of culture. This study aimed to obtain a substrate, composed of waste from sugarcane industry, suitable for the production of pre-sprouted of sugarcane seedlings. The treatments were a combination of three insulated substrates: filter cake, ash and bagasse sugarcane, which were compared to a control substrate. The treatments were homogenized following the ratio volume: volume mixtures of these and the physical and chemical characterizations were carried out. There was the planting of “minirrebolos” in tubes of 180 cm³, respecting the density of each material, and then the materials were taken to a greenhouse for 90 days. The seedlings were evaluated for the development of shoot, root, sprouting percentage and chemical analysis of the leaves. The experimental design was completely randomized, with eighteen repetitions. Analysis of variance was performed and, when significant, the means were compared by the Scott-Knott test at 5% probability; correlation analysis was performed between all results. Seedlings grown in substrate T2/10-C2/10-B6/10 presented further development of root and shoot, easier to remove the cartridge, lower density and higher amount of nutrients.
The use of waste of sugarcane industry as substrate for the formation of pre-sprouted seedlings makes the process of sugarcane sustainable production, the waste itself used for a new generation of culture. This study aimed to obtain a substrate, composed of waste from sugarcane industry, suitable for the production of pre-sprouted of sugarcane seedlings. The treatments were a combination of three insulated substrates: filter cake, ash and bagasse sugarcane, which were compared to a control substrate. The treatments were homogenized following the ratio volume: volume mixtures of these and the physical and chemical characterizations were carried out. There was the planting of “minirrebolos” in tubes of 180 cm³, respecting the density of each material, and then the materials were taken to a greenhouse for 90 days. The seedlings were evaluated for the development of shoot, root, sprouting percentage and chemical analysis of the leaves. The experimental design was completely randomized, with eighteen repetitions. Analysis of variance was performed and, when significant, the means were compared by the Scott-Knott test at 5% probability; correlation analysis was performed between all results. Seedlings grown in substrate T2/10-C2/10-B6/10 presented further development of root and shoot, easier to remove the cartridge, lower density and higher amount of nutrients.
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Palavras-chave
Torta de filtro, Bagaço, Cinza, MPB, Saccharum spp, Filter cake, Bagasse, Ash