Vol. 12, Issue 1 (2023)

Agaricus bisporus (Lange) Sing. was screened for its ability to grow at different temperatures on different date of spawning with the objective of selecting the best time for producing button mushrooms. Seven dates (5^th November to 5^th February) were evaluated for their effect on growth and production at different mean temperatures and mean relative humidity. Among different date of spawning, 20^th November gave the best result with spawn run completed in 11.60 days and case run in 15 days. The pinheads developed into solid button sized mushrooms in 30.6 days. Maximum yield of 1.13 kg/bag was also found on 20^th November followed by 5^th November and 5^th December with total yield of 1.02 and 1.01 kg/bag respectively.