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Ciência Florestal
Centro de Pesquisas Florestais - CEPEF, Departamento de Ciências Florestais - DCFL, Programa de Pós Graduação em Engenharia Florestal - PPGEF
ISSN: 0103-9954
EISSN: 0103-9954
Vol. 28, No. 2, 2018, pp. 687-695
Bioline Code: cf18063
Full paper language: English
Document type: Research Article
Document available free of charge

Ciência Florestal, Vol. 28, No. 2, 2018, pp. 687-695

 pt BIOCARVÃO DE LODO DE ESGOTO E SEU EFEITO NO CRESCIMENTO E NAS CARACTERÍSTICAS MORFOLÓGICAS DE MUDAS DE EUCALIPTO ( Eucalyptus grandis check for this species in other resources W.Hill ex Maiden)
Gonzaga, Maria Isidória Silva; Mackowiak, Cheryl; Almeida, André Quintão de & Carvalho Júnior, José Ilmar Tínel de

Resumo

O uso de biocarvão de lodo de esgoto (biossólido) no substrato para crescimento de mudas de espécies florestais pode ser uma estratégia ambientalmente interessante para a melhoria da qualidade das mudas. O objetivo do estudo foi avaliar o efeito de diferentes doses (0, 20, 40, 80 e 100 t ha-1) de biocarvão de lodo de esgoto no crescimento e características morfológicas de mudas de eucalipto (Eucalyptus grandis W. Hill ex Maiden). Os tratamentos foram dispostos em delineamento inteiramente casualizado, com quatro repetições. Mudas de eucalipto com 10 semanas foram transferidas para potes e cultivadas por oito semanas. O teor de clorofila, a altura da planta e o diâmetro do coleto foram avaliados aos 0 (tempo 1), 30 (tempo 2) e 60 (tempo 3) dias após o transplante. A biomassa da parte aérea e das raízes foi avaliada após a colheita. O biocarvão melhorou a qualidade das mudas e não influenciou o teor de clorofila. A altura das plantas aumentou enquanto o diâmetro do coleto diminuiu com o aumento das doses de biocarvão, aos 60 dias do transplante. O uso de biocarvão de lodo de esgoto melhorou o crescimento e as características morfológicas das mudas de eucalipto, sendo assim, sua aplicação pode ser recomendada como insumo e condicionador de solo. De acordo com o Índice de Qualidade de Dickson, as melhores mudas foram obtidas com o uso de 20 e 40 t ha-1 de biocarvão.

Palavras-chave
Biossólido; carbono pirogênico; espécies florestais

 
 en SEWAGE SLUDGE DERIVED BIOCHAR AND ITS EFFECT ON THE GROWTH AND MORPHOLOGICAL TRAITS OF Eucalyptus grandis check for this species in other resources W.Hill ex Maiden SEEDLINGS
Gonzaga, Maria Isidória Silva; Mackowiak, Cheryl; Almeida, André Quintão de & Carvalho Júnior, José Ilmar Tínel de

Abstract

The use of sewage sludge (biosolids) biochar in the forest seedlings growing media can become an environmentally interesting strategy to improve seedlings quality. Therefore, the aim of this study was to evaluate different rates of application (0, 20, 40, 80 and 100 t ha-1) of biosolid biochars on the growth and morphological traits of eucalyptus (Eucalyptus grandis W. Hill ex Maiden) seedlings. The treatments were arranged in a completely randomized design with four replications. Ten-week old eucalyptus seedlings were transferred to the pots and allowed to grow for eight weeks. Chlorophyll content, plant height and stem diameter were measured at 0 (time 1), 30 (time 2) and 60 (time 3) days after transplant. Shoot and root biomass were measured after plant harvest. Biochar was effective in improving the seedlings quality. Increasing rate of application of biochar did not significantly influence chlorophyll content. At 60 days after planting, plant height increased and stem diameter decreased when high doses of biochar were applied. The use of sewage sludge biochar improved the growth and the morphological traits of the eucalyptus seedlings, therefore its application can be recommended as soil amendment and soil conditioner. According to the Dickson Quality Index, the best eucalyptus seedlings were obtained with 20 and 40 t ha-1 of biochar.

Keywords
Biosolids; pyrogenic carbon; forest plant species

 
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