Moorthy, V.K.Chandra Mohanan, R.2014-08-022014-08-021996Mushroom research 1996 v-5 p-23-28http://hdl.handle.net/123456789/4498Observation on contamination of Pleurotus sajor-caju spawn bottles in a commercial farm in Dakshina Kannada district of Karnataka in different seasons for two years revealed that contamination was the highest during monsoon season, followed by post-monsoon season. But the over-all success of spawn production was high (91.4%) in the commercial farm. The contamination of spawned bags was also highest during monsoon season. In spite of higher contamination, the yield was highest during monsoon season in all the three years of observation and lowest during pre-monsoon period. However, the yield of P. sajor-caju, obtained in the commercial farm was not very good.enMushroomPleurotus sajor-cajuseasonal variationcultivatin contaminationspawnArticle