ANITA KUMARICHAUHAN, SHREYA2021-10-212021-10-212021-10https://krishikosh.egranth.ac.in/handle/1/5810177194ABSTRACT The present study was confined to six populations selected from three districts comprising of Elaeagnus umbellata Thunb. in Himachal Pradesh. There was significant variation in the morphological characters of E. umbellata Thunb. in six natural populations. The fruits of E. umbellata Thunb. were collected during the month of September, and their characteristics were studied. The fruit weight and seed weight was observed maximum in Kalaghat population and TSS was noted maximum in Kujji population. The repeatability coefficient of population was highest in TSS. The phytosociological survey was conducted in Elaeagnus growing and non- Elaeagnus growing sites. In Elaeagnus present sites E. umbellata Thunb. was dominating shrub, it was due to the invasive nature of this shrub. The account of herb species was also highest in these sites as compared to where this shrub was absent. The nitrogen content found in the Elaeagnus growing sites was greater than other sites because E. umbellata Thunb. has ability to fix nitrogen especially in infertile soils due to the presence of nodules on its roots that houses nitrogen fixing actinomycetes.EnglishThesis