Seasonal Distribution and Infection Intensity of Ectomycorrhizae in <I>Pinus roxburghii</I> Forest

Abstract

A study was conducted to assess seasonal distribution and infection intensity of ectomycorrhizae in Chir pine (Pinus roxburghii Sargt.). Maximum number of mycorrhizal roots were observed to be highest during monsoon season (July, August and September). Dead mycorrhizal roots were noticed to be maximum during summer. Per cent occurrence and death rate of mycorrhizae were observed maximum in the month of October. No specific patterns of increase and decrease of mantle thickness during various months were noted while the mantle thickness was found maximum in the month of October. The intensity of hartignet penetration was recorded maximum in the month of June and lowest in August. Overall, eight different types of mantle were observed in Chir pine forest. Positively significant correlation was estimated between available phosphorus and live mycorrhiza(P