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<p>The study was carried out at the Federal Institute of Northern Minas Gerais—IFNMG, in Arinos-MG, to evaluate the effect 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. The treatments that formed the plots consisted of two formulations of fermented bran composts containing mixtures of raw materials with low (↓) and high (↑) C/N ratios: castor bean bran (CAB↓) + wheat bran (WHB↑) and cottonseed bran (COB↓) + passion fruit peel bran (PFPB↑), applied at doses equivalent to 0, 50, 100 and 200&#xa0;kg N ha<sup>−1</sup>.Parameters such as shoot diameter, fresh and dry mass production, productivity, accumulation of N, P, K, Ca and Mg in lettuce and sorghum were evaluated, as well as the economic analysis. 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 significant difference 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 financial costs in organic farming units.</p>

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

  • 期刊论文

  • 发表日期：

    2025年6月18日

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  • Ana Amélia dos Santos Cordeiro,
  • Luiz Fernando de Sousa Antunes,
  • Giulia da Costa Rodrigues dos Santos,
  • José Guilherme Marinho Guerra,
  • Ricardo Luiz Louro Berbara,
  • Ednaldo da Silva Araújo,
  • José Antonio Azevedo Espindola

摘要

The study was carried out at the Federal Institute of Northern Minas Gerais—IFNMG, in Arinos-MG, to evaluate the effect 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. The treatments that formed the plots consisted of two formulations of fermented bran composts containing mixtures of raw materials with low (↓) and high (↑) C/N ratios: castor bean bran (CAB↓) + wheat bran (WHB↑) and cottonseed bran (COB↓) + passion fruit peel bran (PFPB↑), applied at doses equivalent to 0, 50, 100 and 200 kg N ha−1.Parameters such as shoot diameter, fresh and dry mass production, productivity, accumulation of N, P, K, Ca and Mg in lettuce and sorghum were evaluated, as well as the economic analysis. 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 significant difference 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 financial costs in organic farming units.