~ 704 ~ Journal of Pharmacognosy and Phytochemistry 2017; SP1: 704-706 E-ISSN: 2278-4136 P-ISSN: 2349-8234 JPP 2017; SP1: 704-706 Gopal Singh Professor, Plant Pathology, SVPUAT, Meerut, UP, India Sandeep Kumar Department of Plant Pathology, SVPUA & T, Meerut, UP, India Mohit Department of Plant Pathology, SVPUA & T, Meerut, UP, India Ritesh Sharma Basmati Export development Foundation, Modipuram, Meerut, UP, India Correspondence Gopal Singh Professor, Plant Pathology, SVPUAT, Meerut, UP, India Effect of different substrates on yield potential of Oyster mushroom (Pleurotussajor-caju) Gopal Singh, Sandeep Kumar, Mohit and Ritesh Sharma Abstract A study was conducted to examine the effect of different types of substrate (growing medium) on yield of mushroom (Pleurotussajor- caju) for production using four types of substrates like Wheat straw (WS), Paddy straw (PS) Mustered siliqua (MS) and Dried sugarcane leaves (DS), these substrate are generally agro waste leading environmental pollution after being. Various parameters are observed such as cropping period (days), pinhead initiation (days), number of sporophores and yield. The experiments were conducted in completely randomized design with three replicates. Results revealed that wheat straw + mustered siliqua (1:1) ratio produced better results in comparison to other treatments for minimum days of cropping period (71.5 day), pinhead initiation (19 day), highest number of sporophores/kg substrate (25.2) and increased yield (54.60 kg/q substrate). Keywords: yield potential, Oyster mushroom, Pleurotussajor-caju Introduction The mushroom is recognized as fleshy macro-fungi, a group of achlorophyllous organisms. These are sometimes tough and umbrella like sporophore (fruiting body) with spores, naturally grown in fields, forests, on manure heaps, water channels and hilly areas, mostly during and just after rains. Since earliest time, the mushrooms have been treated as special kinds of food. Pleurotus with different species constitute a cost effective means of both supplementing the nutrition to human kind through the production of edible mushrooms and alleviating the suffering caused by certain kinds of illnesses through the use of medicinal mushrooms. They are considered as one of the four major edible mushrooms cultivated in different countries for human consumption. The chemical composition of the fresh fruiting bodies of oyster mushroom, Pleurotus indicates a large quantity of moisture (90.8%), whereas fresh as well as dry oyster mushrooms are rich in proteins (30.4%), fat (2.2%), carbohydrates (57.6%), fiber (8.7%) and ash (9.8%) with 345 K (cal) energy value on 100 g dry weight basis; while vitamins such as thiamin (4.8 mg), riboflavin (4.7 mg) and niacin (108.7 mg), minerals like calcium (98 mg), phosphorus (476 mg), ferrous (8.5 mg) and sodium (61 mg) on 100 g dry weight basis, are also found present (Pandey & Ghosh, 1996) [6] . Rambelli & Menini (1985) [7] reported that this mushroom is reputed to be antitumoural because of its chemical composition. Growing medium of the mushroom is generally known assubstrate. An addition oforganic and inorganic supplements to the substrate fromoutside to improve the yield of mushroom have therefore been recommended by many workers (Jain and Vyas, 2002 and Chaubey et al., 2010) [8, 3] . Cultivation of oyster mushroom on Soybean straw and other conventional substrates is cheaper result the reduction in production cost of mushroom and utilizing agriculture waste would certain help to reduce the environmental problems particularly accumulation of filthcarbon sequesters, nutrients, metal sequestration and ultimately mushroom cultivation help us to achieve bioremediation (Dehariya et al, 2010) [5] . This study therefore aimed at investigating the effect of local substrates in the cultivation of Oyster mushroom in Uttar Pradesh. This may subsequently help in increasing living standards, environmental cleaning, providing quality protein and self-employment to rural youths in the country. Materials and methods The experiments were conducted during 2012-2013 in Mushroom Laboratory, Department Plant of Pathology, S. V. P. University of Agriculture and Technology, Meerut, U.P, India, which is situated on the Western side of the Delhi-Dehradun high way (NH-58) at adistance of 10.0 km away in the north of Meerut city. On the basis of meteorological observation Meerut is situated between 29 o 01’N latitude and 77o 45’E longitude at an altitude of 237 meters above the mean sea-level.