18 KAVAKA 55 :18 -27 (2020) .doi:10.36460/Kavaka/55/2020/18-27 Investigation on the performance of Cedrus deodara seedlings artificially inoculated with the mycorrhizal associate Rhizopogon himalayensis Lal Singh1, Ashwani Tapwal2, J.S. Thakur3 and T.N. Lakhanpal4* 1Himalayan Research Group, Chotta Shimla, H.P. -171002 2 Himalayan Forest Research Institute, Shimla-171013 3,Govt. College Banjar, Kullu, H.P. 175123 ,4 Dept-. of Biosciences, Himachal Pradesh Univ., Shimla-171005 *Corresponding author Email:
[email protected] (Submitted on May 25, 2020; Accepted on October 10, 2020) ABSTRACT Performance of the seedlings of Cedrus deodara artificially inoculated with Rhizopogon himalayensis was evaluated in three sets of soils viz.: forest soil, wasteland soil, and mixed soil. It was observed that the growth and development of inoculated and uninoculated seedlings were almost similar till the age of 2½ months except that the seedling height and root length were significantly higher in the inoculated seedlings. The inoculated seedlings attained a height of 25-30 cm within 6 months whereas the seedlings with natural inoculum attained the same in 18-24 months, exhibiting an incredibly significant difference. Similarly, the inoculated seedlings excelled the seedlings with natural inoculum in collar diameter, fresh and dry weight of shoot and root. Concerning soils, the wasteland soil when used in mixture with natural zone soil produced better seedlings with quality growth characteristics. Therefore, it can be concluded that seedlings inoculated with R. himalayensis performed better in growth and development than those with natural inoculum. Keywords: Rhizopogon himalayensis, Trappeindia himalayensis, Cedrus deodara, mycorrhiza, artificial inoculation, N.W.