Influência de Diferentes Concentrações de Vermicomposto no Desenvolvimento de Mudas de Eucalipto e Pinus

Abstract

RESUMOO objetivo do estudo foi avaliar o efeito da vermicompostagem de resíduos de carne e esterco bovino no desenvolvimento de mudas de eucalipto e pinus. O experimento foi conduzido em delineamento inteiramente casualizado com oito tratamentos, sendo quatro elaborados a partir da adição de 0%, 20%, 40% e 60% de esterco bovino ao resíduo de carne, ambos vermicompostados, e quatro constituídos pela adição de 0%, 20%, 40% e 60% de vermicomposto ao substrato comercial, com sete repetições. Foram avaliados a altura das mudas, o diâmetro do colo, a massa seca da parte aérea e radicular, a área superficial específica, o índice de qualidade de Dickson e a relação entre a altura da muda e o diâmetro do colo. A adição ao substrato comercial de 20% e 40% de vermicomposto proporciona desenvolvimento e qualidade de mudas de eucalipto equivalentes ao alcançado com a utilização de 100% de substrato comercial. As mudas de pinus não são favorecidas pelas proporções de vermicomposto testadas.Palavras-chave: esterco bovino, resíduo orgânico, espécies florestais, Eucalyptus grandis, Pinus elliottii. Influence of Different Concentrations of Vermicompost in the Development of Eucalyptus and Pine Seedlings ABSTRACTThe objective of this study was to evaluate the effect of meat waste and cattle manure vermicomposting in the development of eucalyptus and Pinus seedlings. The experiment was conducted in a completely randomized design with eight treatments with seven repetitions. The treatments were: 0%, 20%, 40% and 60% of cattle manure added to meat waste, both vermicomposted, and 0%, 20%, 40% and 60% of the vermicompost added to commercial substrate. Stem height and diameter, shoot and root dry mass, specific surface area, Dickson quality index and the ratio between stem height and diameter were assessed. Addition of 20% and 40% of vermicompost in eucalyptus seedling cultivation promotes similar development and quality obtained with addition of 100% of commercial substrate. Pinus seedlings are not influenced by the proportions of vermicompost tested.

INICIAL DEVELOPMENT OF Tectona grandis L.f UNDER NUTRICIONAL RESTRICTION

“…also did not find statiscal difference between the averages of growth in height after 120 days of development in the greenhouse. Silva et al (2017). testing the concentration of vermicomposts in the development of eucalyptus and pine seedlings.…”

IRRIGATION FREQUENCIES FOR Eucalyptus grandis SEEDLINGS

“…The quality index of seedlings (DQI) proposed by Dickson et al (1960) is an important weighted morphological measure. This is a good indicator of the quality of the seedlings, considering their robustness and the balance of biomass distribution (CERQUEIRA et al, 2017;SILVA et al, 2017). The higher the DQI value, the better the quality of the seedling.…”

Irrigation frequency and vermiculite proportion in substrate for Eucalyptus grandis seedling

“…The seedling quality index (DQI) proposed by Dickson et al (1960) is an important weighted morphological measure. It is a good indicator of seedling quality, as it considers the robustness and balance of seedling biomass distribution for its calculation (Cerqueira, Azevedo, Souza, & Azevedo, 2017;R. F. Silva, Marco, Ros, Almeida, & Antoniolli, 2017).…”