L Pathmashini1*,V Arulnandhy1 and RSW Wijeratnam2
1 Department of Agric. Biology, Faculty of Agriculture, Eastern University of Sri Lanka, Chenkalady
2 Food Technology Division, Industrial Technology Institute (ITI), Colombo - 07
Abstrsact
An investigation was conducted to evaluate the efficacy of four different types of grain spawns viz; kurakkan (Eleusine coracana), maize (Zea mays), sorghum (Sorghum bicolor), and paddy (Oryza sativa) on oyster (Pleurotus ostreatus) mushroom production. Spawn types were based on their effects on mushroom solids (%), biological efficiency (BE %), size (g), number of sporophores, yield, yield ratio and substrate weight loss (%). Locally available kurakkan (Eleusine coracana), maize (broken) (Zea mays), sorghum (Sorghum bicolor), and paddy (Oryza sativa) were used for spawn production. The experiment was designed as a complete randomized design with three replicates. Four types of spawns were tested on a medium based on sawdust. The growing media (substrate) inoculated with kurakkan spawns showed the highest biological efficiency of 27.82± 0.12 (%) , mean yield of 52.94 ± 0.67 g, mushroom size of 7.73 ± 0.33 g and yield ratio of 23.19 ± 0.01. The harvests obtained from paddy spawn showed the highest mushroom solids of 9.97 ± 0.26 (g/100g of harvest). Highest mean numbers of sporophore (fruiting bodies) were noticed in the harvests obtained from sorghum spawn (7.67 ± 0.66). The kurakkan spawn significantly. Enhanced biological efficiency and increased size and yield, when compared with other spawn types viz; maize (Zea mays), sorghum (Sorghum bicolor), and paddy (Oryza sativa).
Key words: spawn, Pleurotus ostreatus, Eleusine coracana, Zea mays, Sorghum bicolor, Oryza sativa
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