Fertilization with fermented composts improves agroeconomic performance and sustainability in organic lettuce and forage sorghum cropping systems in Northwestern Minas Gerais, Brazil.

CORDEIRO, A. A. dos S.; ANTUNES, L. F. de S.; SANTOS, G. da C. R. dos; GUERRA, J. G. M.; BERBARA, R. L. L.; ARAUJO, E. da S.; ESPINDOLA, J. A. A.; ANA AMÉLIA DOS SANTOS CORDEIRO, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; LUIZ FERNANDO DE SOUSA ANTUNES, UNIVERSIDADE FEDERAL RURAL DO SEMIÁRIDO; GIULIA DA COSTA RODRIGUES DOS SANTOS, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; JOSE GUILHERME MARINHO GUERRA, CNPAB; RICARDO LUIZ LOURO BERBARA, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; EDNALDO DA SILVA ARAUJO, CNPAB; JOSE ANTONIO AZEVEDO ESPINDOLA, CNPAB.

Fertilization with fermented composts improves agroeconomic performance and sustainability in organic lettuce and forage sorghum cropping systems in Northwestern Minas Gerais, Brazil.

2025

CORDEIRO, A. A. dos S. | ANTUNES, L. F. de S. | SANTOS, G. da C. R. dos | GUERRA, J. G. M. | BERBARA, R. L. L. | ARAUJO, E. da S. | ESPINDOLA, J. A. A. | ANA AMÉLIA DOS SANTOS CORDEIRO, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; LUIZ FERNANDO DE SOUSA ANTUNES, UNIVERSIDADE FEDERAL RURAL DO SEMIÁRIDO; GIULIA DA COSTA RODRIGUES DOS SANTOS, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; JOSE GUILHERME MARINHO GUERRA, CNPAB; RICARDO LUIZ LOURO BERBARA, UNIVERSIDADE FEDERAL RURAL DO RIO DE JANEIRO; EDNALDO DA SILVA ARAUJO, CNPAB; JOSE ANTONIO AZEVEDO ESPINDOLA, CNPAB.

The study was carried out at the Federal Institute of Northern Minas Gerais—IFNMG, in Arinos-MG, to evaluate the efect of sources and doses of fermented vegetable composts such as "bokashi" on the agroeconomic performance of the succession of curly lettuce and forage sorghum under organic management. There was no interaction between source and dose for the phytotechnical variables. The CAB+WHB treatment resulted in greater K accumulation in the lettuce. Increasing the dose of N increased the commercial fresh mass yield of lettuce by up to 148% at the highest dose. However, the N content was higher in the CAB+WHB treatment, with no signifcant diference for the other variables. The use of agro-industrial vegetable waste, such as passion fruit peel and cottonseed bran, proved to be a viable alternative for replacing conventional raw materials in the formulation of fermented composts, helping to increase sustainability and reduce fnancial costs in organic farming units.

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