In: Sydowia 77, (2025): 17-25; ISSN 0082-0598, DOI 10.12905/0380.sydowia77-2025-0017, Published online on August 5, 2024

Influence of Rhizobium leguminosarum on quality of substrates and productivity of Pleurotus eryngii

Savita Jandaik*, Aparna Johny, Annu Sharma & Rajender Singh

1 Department of Plant Pathology, Dr Yashwant Singh Parmar University of Horticulture and Forestry Nauni, Solan(HP),
India 173230
2 Division of CI&ST, ICAR-Central Potato Research Institute, Shimla, (HP) India-171001
* e-mail: drsavitajandaik@gmail.com

Jandaik S., Johny A., Sharma A. & Singh R. (2025): Influence of Rhizobium leguminosarum on quality of substrates and productivity
of Pleurotus eryngii. – Sydowia 77: 17–25.

The present investigations were undertaken to evaluate the effect of Rhizobium leguminosarum on quality of substrates and
productivity of Pleurotus eryngii. Among the different concentrations (2, 4, and 6 ml) of R. leguminosarum tested on wheat grain
substrate for vegetative growth of P. eryngii, 2 ml concentration resulted in increased mycelial growth of P. eryngii. Supplementation
of substrates (wheat straw and maize cobs) with 20 ml concentration of R. leguminosarum at the time of spawning resulted
in a reduction of days required for spawn run and pin head formation as compared to the untreated bags. The amendment of
substrates with R. leguminosarum improved the physico-chemical properties of the spent mushroom substrates. The nutritional
quality of the fruit bodies significantly increased after the application of R. leguminosarum in the substrates.

Keywords: Mushroom, substrates, physico-chemical properties.