Hydrochar from sugarcane industry by-products: assessment of its potential use as a soil conditioner by germination and growth of maize

Autor(es)

Fregolente, Lais G. ^{[1, 2]} ; dos Santos, Joao Vitor ^[1] ; Mazzati, Felipe S. ^[1] ; Miguel, Thaiz B. A. R. ^[3] ; Miguel, Emilio de C. ^{[4, 5]} ; Moreira, Altair B. ^[1] ; Ferreira, Odair P. ^[2] ; Bisinoti, Marcia C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Inst Biociencias Letras & Ciencias Exatas, Lab Estudos Ciencias Ambientais, UNESP, Campus Sao Jose Rio Preto, BR-15054000 Sao Jose Do Rio Preto, SP - Brazil

^[2] Univ Fed Ceara, Dept Phys, Adv Funct Mat Lab LaMFA, POB 6030, BR-60455900 Fortaleza, Ceara - Brazil

^[3] Univ Fed Ceara, Lab Biotechnol, BR-6002018 Fortaleza, Ceara - Brazil

^[4] Univ Fed Ceara, Lab Biomat, BR-60440554 Fortaleza, Ceara - Brazil

^[5] Univ Fed Ceara, Analyt Ctr, POB 6030, BR-60440554 Fortaleza, Ceara - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CHEMICAL AND BIOLOGICAL TECHNOLOGIES IN AGRICULTURE; v. 8, n. 1 MAR 10 2021.
• Citações Web of Science: 1

Resumo

Background: Hydrothermal carbonization (HTC) is a thermochemical process to convert biomass in carbon-rich materials (hydrochar). The use of sugarcane industry by-products in HTC has been evaluated, generating a hydrochar rich in nutrients, which could be used as a soil conditioner. We raised the hypothesis that the application of hydrochar in soil can improve its nutrient characteristics, bringing a better environment and favouring plant growth, expecting a development similar to that one observed in anthropogenic soils. Results: Germination studies were performed expecting a species-dependent response, using maize and tomato seeds, whose development was assessed in two soluble fractions obtained from hydrochar aiming to evaluate different rhizosphere conditions. The results showed a better development of maize, especially in the aqueous soluble fraction, whose nutrient concentration was lower than that of the acid soluble fraction, as well as the organic composition. Maize growth in soils showed a better initial development in ultisol compared to oxisol, this being inferred by root:shoot biomass ratio and by scanning electron microscopy (SEM) images. However, the development of maize was better in anthropogenic soil compared to soils that received hydrochar. Conclusion: The maize growth, compared with that carried out in anthropogenic soil, suggests that during the period evaluated the addition of hydrochar in soil did not have a negative effect upon maize development in its initial phase, and could have even favoured rooting in ultisol. (AU)

• Processo FAPESP: 15/22954-1 - Transporte de metais e caracterização da matéria orgânica natural de rios da região de Itacoatiara, Amazônia
• Beneficiário: Márcia Cristina Bisinoti
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 18/15733-7 - Avaliação do emprego de carvão hidrotérmico para fins agrícola e de carvão magnético como material adsorvente
• Beneficiário: Márcia Cristina Bisinoti
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular
• Processo FAPESP: 17/26718-6 - Substâncias húmicas de carvão hidrotérmico e de solos Terras Pretas de Índio da Amazônia: Interações com macro e micronutrientes
• Beneficiário: Altair Benedito Moreira
• Modalidade de apoio: Auxílio à Pesquisa - Regular