Esterco de bovino e calcário para formação de mudas de guanandi
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Data
2006-12-18
Autores
Artur, Adriana Guirado [UNESP]
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Editor
Universidade Estadual Paulista (Unesp)
Resumo
A qualidade do substrato é fator decisivo na formação de mudas de espécies florestais. Assim, foram avaliados, em casa de vegetação, os efeitos de doses de esterco de bovino e de calcário na formação de mudas de guanandi (Calophyllum brasiliense Cambèss.). Foram avaliadas quatro doses de cada fator, combinadas em esquema fatorial 4x4. O delineamento experimental foi inteiramente ao acaso com quatro repetições. O substrato foi formado pela mistura, em volume, de oito partes de subsolo e duas partes de areia, com o acréscimo de doses de esterco correspondentes a 0, 2, 4 e 6 partes que, em massa, foram equivalentes a 0; 101; 175 e 229 kg m-3. As doses de calcário foram calculadas para elevar a porcentagem de saturação por bases a 20, 35, 50 e 65%. Foram avaliados, aos 120 dias, altura, diâmetro do colo, número de folhas, área foliar, matéria seca das partes aérea e radicular das mudas e concentração de macronutrientes nas folhas. Pode-se concluir que em substrato constituído de subsolo+areia, adubado com fósforo, não é necessário aplicar calcário, e que o uso do esterco de bovino na composição do substrato em doses maiores ou iguais a 100 kg m-3 resulta em menor crescimento das mudas de guanandi.
The substrate quality is a decisive factor to produce seedlings of forest plants. The effects of cattle manure and lime rates in substrate were evaluated in order to produce guanandi (Calophyllum brasiliense Cambèss.) seedlings in greenhouse conditions. Four rates of each factor were evaluated, by using a 4x4 factorial, and the experimental design was completely randomized, with four replicates. The substrate was obtained by the mixture of eight subsoil parts and two sand parts (v:v). The manure was applied in 0, 2, 4 and 6 parts, in volume, which corresponded, in mass, to 0; 101; 175 and 229 kg m-3. The lime rates were calculated to increase the base saturation percentage to 20% (original subsoil sample), 35%, 50% and 65%. The seedlings harvest was done 120 days after transplanting, when it was determined height, stem diameter, number of leaves, leaf area, shoot and root dry matter, and macronutrients concentration in leaves. It was concluded that for the substrate constituted by subsoil + sand and fertilized with phosphorus, the lime application is not necessary, and the use of 100 kg m-3 or more of cattle manure in the substrate composition results in less guanandi seedlings growth.
The substrate quality is a decisive factor to produce seedlings of forest plants. The effects of cattle manure and lime rates in substrate were evaluated in order to produce guanandi (Calophyllum brasiliense Cambèss.) seedlings in greenhouse conditions. Four rates of each factor were evaluated, by using a 4x4 factorial, and the experimental design was completely randomized, with four replicates. The substrate was obtained by the mixture of eight subsoil parts and two sand parts (v:v). The manure was applied in 0, 2, 4 and 6 parts, in volume, which corresponded, in mass, to 0; 101; 175 and 229 kg m-3. The lime rates were calculated to increase the base saturation percentage to 20% (original subsoil sample), 35%, 50% and 65%. The seedlings harvest was done 120 days after transplanting, when it was determined height, stem diameter, number of leaves, leaf area, shoot and root dry matter, and macronutrients concentration in leaves. It was concluded that for the substrate constituted by subsoil + sand and fertilized with phosphorus, the lime application is not necessary, and the use of 100 kg m-3 or more of cattle manure in the substrate composition results in less guanandi seedlings growth.
Descrição
Palavras-chave
organic fertilization, Calcário, Essencias florestais, Esterco bovino, Adubo, Guanandi
Como citar
ARTUR, Adriana Guirado. Esterco de bovino e calcário para formação de mudas de guanandi. 2006. ix, 49 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2006.