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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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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]
Total Authors: 8
[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
Total Affiliations: 5
Document type: Journal article
Web of Science Citations: 1

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)

FAPESP's process: 15/22954-1 - Metal transportation and natural organic matter characterization from rivers of Itacoatiara, Amazônia
Grantee:Márcia Cristina Bisinoti
Support type: Regular Research Grants
FAPESP's process: 18/15733-7 - Evaluation of the use of hydrochar for agricultural purposes and of magnetic coal as adsorbent material
Grantee:Márcia Cristina Bisinoti
Support type: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 17/26718-6 - Humic Substances of Hydrochar and soils Amazon Dark Earth: Interactions with Macro and Micronutrients
Grantee:Altair Benedito Moreira
Support type: Regular Research Grants