Bamboo is a fast-growing and worldwide spread plant. If you are living in one of these areas, you are likely to have access to it. If you do, you might be wondering if you can use it to cultivate mushrooms, and if you do, you might asking yourself, what can I expect?
To figure that out, that’s dive into today’s research paper.
The author investigated the cultivation of Pleurotus sajor-caju and Pleurotus ostreatus on bamboo compared to sawdust from conifer trees.
The bamboo substrate was first crushed and dried at room temperature before submerging it 24 hours in water. After the water drained for 4 hours, the substrate was supplemented with 10% wheat bran and 1% calcite limestone. The author used pine and araucaria sawdust for the control, which was amended with 10% wheat bran and 1% calcite limestone.
Both types of substrate were then filled in bags and autoclaved for 40 minutes at 121°C. After the cooldown, the bags were inoculated with 4% and incubated at 24°C for 40 days. The bags were cut and placed into the fruiting room. They were maintained at 24°C and 80% relative humidity to initiate the fruiting. The fruiting stage can vary from 2 to 2,5 months.
Here are the results:
The first thing which stands out is that Pleurotus sajor-caju produced with +25% a higher yield on the sawdust mixture than Pleurotus ostreatus. Second, the yield on bamboo for both species is higher. For Pleurotus sajor-caju, the yield could be increased by 25%. For Pleurotus ostreatus by 45%. These values then translate into the following biological efficiency. 126 for Pleurotus sajor-caju grow and 112 for Pleurotus ostreatus, both grown on bamboo. On sawdust, 52 and 42 could be found, respectively.
For Pleurotus ostreatus, typically, a biological efficiency of up to 200 can be found on sawdust. The findings in today’s research paper are coming, therefore, as a surprise. The deviation can have several reasons. One might be the type of sawdust the author used. As I mentioned in the beginning, Pine and araucaria are conifer trees. They contain a resin that acts to some extent anti-fungal. The other is the duration of the autoclaving. Several studies used to sterilize sawdust for 60-90 minutes, which is 38% to 125% longer than in this study.
If you are interested in growing mushrooms on sawdust, then the video on the right is for you. In it, I talk about a research project in which the author analyzed five different sawdust types and could show a biological efficiency of 200. Talk to you there.
Mauro César Paiva e Silva (2019) AVALIAÇÃO DA EFICIÊNCIA BIOLÓGICA E PRODUTIVA, DE SUBSTRATO A BASE DE BAMBU Dendrocalamus asper, PARA A PRODUÇÃO DE Pleurotus ostreatus E Pleurotus sajor-caju. UNIVERSIDADE TECNOLÓGICA FEDERAL DO PARANÁ CURSO DE BACHARELADO EM ENGENHARIA FLORESTAL CAMPUS DOIS VIZINHOS. http://repositorio.utfpr.edu.br/jspui/handle/1/10864