Diferentes biocarvões: efeitos na fertilidade do solo e no crescimento de pimentão

Josely Dantas Fernandes; Laysa Gabryella de Souza Laurentino; Lúcia Helena Garófalo Chaves; José Nathanael Ferreira de Andrade; Andre Alisson Rodrigues da Silva; Gustavo  Tomio Magalhães Kubo; Geovani Soares de Lima; Andrezza Maia de Lima

doi:10.1590/1983-21252025v3812730rc

Authors

Josely Dantas Fernandes Academic Unit of Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande, PB, Brazil https://orcid.org/0000-0002-1297-6962
Laysa Gabryella de Souza Laurentino Academic Unit of Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande, PB, Brazil https://orcid.org/0000-0002-7852-0052
Lúcia Helena Garófalo Chaves Academic Unit of Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande, PB, Brazil https://orcid.org/0000-0002-9905-2315
José Nathanael Ferreira de Andrade Academic Unit of Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande, PB, Brazil https://orcid.org/0000-0002-2439-4142
Andre Alisson Rodrigues da Silva Academic Unit of Agronomy, Universidade Federal do Oeste do Pará, Juruti, PA, Brazil https://orcid.org/0000-0001-9453-1192
Gustavo Tomio Magalhães Kubo Academic Unit of Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande, PB, Brazil https://orcid.org/0000-0003-2101-9600
Geovani Soares de Lima Academic Unit of Agricultural Sciences, Universidade Federal de Campina Grande, Pombal, PB, Brazil https://orcid.org/0000-0001-9960-1858
Andrezza Maia de Lima Academic Unit of Agricultural Engineering, Universidade Federal de Campina Grande, Campina Grande, PB, Brazil https://orcid.org/0000-0003-0989-7312

DOI:

https://doi.org/10.1590/1983-21252025v3812730rc

Keywords:

Capsicum annuum L.. Agricultural waste. Pyrolysis.

Abstract

The use of agro-industrial waste as agricultural input is a sustainable alternative to recover soil fertility and increase productivity. The objective of this study was to evaluate the effects of biochars produced from poultry litter, coconut fiber, and rice straw on soil fertility and on the growth of green bell peppers grown in the field, in an Ultisol. Initially, soil samples were incubated with the three biochars at doses of 0.0, 6.0, 9.0, and 12.0 t ha^-1 for 160 days, with moisture content around 70%. After this period, chemical analyses of the soil were performed. Then, an experiment was conducted in a randomized block design, in a 5 × 3 + 1 factorial scheme (five doses and three types of biochars, plus an additional treatment with mineral fertilizer), with four replicates. Poultry litter biochar promoted the greatest increases in pH, phosphorus (42.04 mg dm^-3) and potassium (0.46 cmol_c dm^-3). Coconut fiber biochar also increased potassium (0.48 cmol_c dm^-3) and promoted greater accumulation of dry matter in the aerial part (33.87 g plant^-1 with coconut fiber and 34.37 g plant^-1 with poultry litter), surpassing mineral fertilization. Rice straw biochar did not promote significant improvements. Thus, coconut fiber and poultry litter biochars demonstrated potential as a sustainable alternative to improve soil fertility and bell pepper development.

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