Carbon-to-nitrogen ratios for Agaricus brasiliensis on the axenic method - DOI: 10.4025/actasciagron.v32i1.5086

• Autor(a) principal: Zaghi Junior, Lienine Luiz
• Data de Publicação: 2009
• Outros Autores: Linde, Giani Andrea, Colauto, Nelson Barros
• Tipo de documento: Artigo
• Idioma: por; eng
• Título da fonte: Acta Scientiarum. Agronomy (Online)
• Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5086
• topic: Agaricus blazei; mycelial growth; substrate; cultivation; Microbiologia Agrícola

Cultivation techniques for Agaricus brasiliensis (composting method) and substratum formulations are the same ones used for Agaricus bisporus. Most of the carbon-to-nitrogen (C:N) ratios reported for A. brasiliensis are similar to those used for A. bisporus on the composting method and there are few studies about the variation of C:N ratios for A. brasilienses on the axenic method. The objective of this study was to verify the mycelial growth of A. brasiliensis on different C:N ratios using regional by-products as substrate formulation on the axenic method. Studied C:N ratios of substrate (mixture of soybean and cassava fibers) ranged from 11:1 to 248:1, with nitrogen content ranging from 4.25 to 0.20%, respectively. It was concluded that substrate with only soybean fiber generates higher mycelial growth than any formulation with cassava fiber; the highest mycelial growth on substrate is with C:N ratio of 11:1 (N = 4.25%); the intermediate growth is with C:N ratio range from 15:1 to 50:1 (N from 3.31 to 0.98%); and the lowest growth is with C:N ratio of 100:1 or higher (N ≤ 0.50%).