Addition of organic and inorganic supplements to the substrate during cultivation is little known to influence the yield of various species of Elm oyster mushroom. Therefore, an experiment with brans, oilcakes and flours as organic supplements in cultivation of Elm oyster mushroom was undertaken in order to find out better and cheaper supplements to increase the yield of Elm oyster mushroom. The gram flour @ 2% took minimum incubation period of 17.00 days. Further karanj cake @ 2% and maize flour @ 2% recorded 18 days to complete spawn run and, while the soybean flour @ 2% took maximum period (21 days) for spawn run. The number of days required for pinhead formation differed significantly and varied between 20.33 to 28.00 days. Similarly, the days required for the first, second and third harvest ranged from 27 to 60.33 days for the total three harvesting. The minimum days of 27.33, 41 and 56.67 were required for first, second and third harvest, respectively after pinhead formation by the treatment of maize flour @ 2% whereas maximum number of days were required by treatment soybean flour @ 2% for first and second harvest (34.33 and 50 days) which failed for third harvest. The number of fruiting bodiesper beds varied from 6.11 to 89.56 due to different treatments.The neem cake @ 2%produced significantly higher number of fruiting bodies per bed (89.56) while the minimum numbers of fruiting bodies were found in the treatment soybean flour @ 2% had 6.11 fruits / bed. A significant variation in average fruit body weight (2.72 to 10.64 g per fruit), pileus diameter (4.09 to 6.72 cm), stipe length (2.62 to 4.43 cm) and stipe size (2.73 to 3.84 cm) were noted due to different treatments. The observations on yield performance due to different treatments revealed that treatment with neem cake @ 2%produced maximum yield of mushroom (841.11 g/kg dry) substrate followed by treatment, maize flour @ 2% with yield of 831.11 g/kg dry substrate whereas lowest yield of 320g/kg dry substrate was recorded in treatment soybean flour@ 2%. The investment towards flour and cakes gave an additional returns due to supplementations ranged from Rs. 3.11 to Rs. 18.94 per kg mushrooms with B:C ratio ranging from 0.91 to 2.47.

The mung bean variety used for experiment was "Vaibhav'. The objectives for present research were to study the effect of liquid formulations of PSB inoculation on Soil microbial population dynamics at periodic intervals in soil, nitrogen and phosphorus uptake by mung bean, growth and yield of mung bean as influenced by application of liquid PSB. There were ten treatments. These include seed treatment with liquid PSB @ 25ml/kg of seed, Seed treatment with liquid PSB@ 25ml/kg of seed, seed treatment with liquid PSB@ 25 ml/kg of seed each, seed treatment with liquid PSB@ 25 ml/kg of seed each +75% of recommended dose of fertilizers, seed treatment of carrier based PSB @ 25g / kg of seed, seed treatment of carrier based PSB @ 25g / kg of seed, seed treatment of carrier based PSB25g/kg of seed each, seed treatment of carrier based PSB25g/kg of seed each+75% recommended dose of fertilizers. The tenth treatment is absolute control. Each treatment is replicated three times in Randomized Block Design. The liquid formulations of PSB show positive effect on soil chemical, physical and microbial properties. There was ascendance in trend of population of PSB in soil which show descending trend as crop approaches maturity. Available nitrogen and phosphorus increased from initial stage of crop growth to harvest. After considering all the parameters, inference could be drawn that PSB application enhance the growth leading to increase in yield of mung bean. It was observed that T 3 : S.T.L. liquid PSB @ 25 ml/ kg of seed each had higher arithmetic value for growth parameters including germination, plant height, number of branches, number of leaves, LAI, root nodules and yield parameters pods/ plant, 1000 seed weight ultimately yield/ ha. Other parameters including chemical and microbial parameters showed significant increase over the absolute control. It was followed by T 7 : S.T.C.B. PSB each for above parameters. Above investigation concluded that inoculation of liquid formulation of PSB enhanced growth as well as yield of mung bean. Population of PSB as influenced by inoculation of liquid formulations significantly was enhanced. Total N and P uptake by plant and grain sample was found to be significantly higher due microbial inoculations. Available N and P from soil at harvest also showed significant increase over absolute control. Ultimately higher net returns and B: C ratio was obtained for liquid bioinoculants. K e y w o r d s LiquidFormulations.

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