This study was designed with an objective of analysing the effect of spawn maturity period on the growth and yield of Agrocybe aegerita, black poplar mushroom. The spawn of Agrocybe aegerita was prepared and used at three different days of maturity viz. 25 days, 35 days and 45 days. The days of spawn run, pin headed appearance, first harvest, second harvest and third harvest were observed and recorded. Similarly, the effect of different days of spawn maturity on the yield and bio-efficiency of the mushroom were also analysed. The study showed that, beds inoculated with 35 days spawn gave more yield of mushrooms with higher bio-efficiency when compared to other two groups of spawn inoculated beds. This mushroom possess potent anti-cancer biochemical and phytochemical compounds which on cultivation yields great benefit to the society.
