Produção Nacional
Revisado por pares
Potential of coffee straw biochal as a substrate conditioner in seed lettuce and sorghum germination and vigority
2023; Instituto Internacional de Ecologia (Brazil); Volume: 83; Linguagem: Inglês
10.1590/1519-6984.277437
ISSN1678-4375
AutoresRicardo Dias Alixandre, Paula Aparecida Muniz de Lima, T. F. R. Almeida, João Samuel Meira de Oliveira, Marcia Braga Pereira, Fabiano Tristão Alixandre, Gardênia Rosa de Lisbôa Jacomino, Rodrigo da Silva Dias, Rodrigo Sobreira Alexandre, Adésio Ferreira, Renato Ribeiro Passos, José Carlos Lopes,
Tópico(s)Soil Management and Crop Yield
ResumoAbstract The use of residues from coffee production to obtain biochar is a sustainable approach, which aims to minimize the environmental impact of these materials. In this study, the effect of adding coffee straw biochar on the physiological quality of lettuce and sorghum seeds was investigated. Thus, the objective of this work was to study the effect of adding different concentrations of coffee biochar in the substrate composition on the physiological quality of lettuce (Lactuca sativa) and sorghum (Sorghum bicolor) seeds. The experimental design used was completely randomized, with five concentrations of biochar (0; 7.5; 15; 30 and 60%), conducted with four replications of 25 seeds. The use of biochar in the concentrations studied does not provide an increase in the average germination percentage and vigor of lettuce and sorghum seeds. The increase in the concentration of biochar caused less seed vigor, suggesting a toxic effect. For seed germination, there was no significant difference between lettuce and sorghum species, regardless of treatment. For the germination speed index, sorghum seeds have higher means, except for the treatment with the addition of 15% coffee straw biochar. Lettuce seeds have higher shoot length averages, except for treatment with 100% commercial substrate. The sorghum seeds have higher mean root length and dry mass than lettuce, regardless of the treatment.
Referência(s)