Volume 19 Part 1 Article 41
Title: Cultivation Potential of Lentinus giganteus (Urupaha): A Wild Edible Mushroom of Sri Lanka
Author: D G A Namalee, H M R Sarasi, Srimathi Udugama, K L Waasantha Kumara
A study was undertaken with the objective of investigating artificial cultivation potential of naturally grown Lentinus giganteus (Urupaha): the biggest wild edible mushroom of Sri Lanka using the locally adapted technologies used for oyster mushroom cultivation. The mushroom was obtained from its natural habitat and the tissue culture technique was employed to isolate the fungus on potato dextrose agar (PDA) medium. Finger millets, paddy grains and saw dust alone or mixed with each other at different combinations along with the other standard ingredients were used to find out the best substrates for spawn production. Changing compactness of the substrate by increasing weight of the compost filled per standard 13″ size bag, changing bag sizes ranging from 8″ to 13″, making 1” diameter size holes of different numbers in bags after spawn run, and different sawdust media were tested in separate experiments to understand their effect on mushroom yields in 3 flushes. L. giganteus was able to successfully cultivate on sawdust based growth medium supplemented with other ingredients. Fast spawn production was achieved when paddy alone or combinations of, paddy and sawdust (1:1), paddy and finger millet (1:1) and saw dust and finger millet (1:1) were used as the spawn substrate. Compactness of the bags when prepared as 0.98-1.07 kg substrate per bag, and standard 13” size polypropelene bags recorded significantly high yield compared to other treatments. No significant difference was observed among treatments for the yield of mushroom on mango (Mangifera indica), rubber (Hevea brasiliensis), Alstoniya (Alstoniya macrophylla) and Albizzia (Albizzia odorotissima) used as the compost medium. Results revealed the potential of commercial cultivation of L. giganteus on saw dust based compost media under ambient tropical conditions. The findings will be the first report in investigating the commercial cultivation potential of L. giganteus using locally adapted technologies.