Forest Pathology museum houses 900 exhibits of various economically important tree diseases and timber decays. Exhibits are arranged on the basis of two broad host groups: hardwood and conifers. These are further divided according to the part of the plant affected namely root disease, stem disease and foliage disease. Important tree diseases such as heart-rot in khair, sal, teak and deodar and root-rot in khair, sal and pines have been displayed. Degradation of timber and timber products caused by micro- organisms are also displayed.

Beneficial role of fungi as mycorrhiza to establish and promote tree growth especially in pines and the value of fungi as a source of food are also displayed.