Soil microbes are important in processes such
as soil aggregate formation, nitrogen cycling, compound
breakdown, and other transformations. Understanding
how microorganisms react to chemical and organic
fertilizers is critical for long-term agricultural
intensification. Soil samples were collected from three
distinct ecological sites of Nepal including terai
(Parwanipur), mid-hills (Pakhribas), and high hills
(Jumla) during winter seasons for period of three years
2017, 2018, and 2019. Sandy loam soils of Agricultural
Research Farm, NARC, were used to assess the effects of
compost and inorganic fertilizers on microbial dynamics in
the continuous rice wheat cropping system. The results
showed that the farmyard manure-treated plot had the
highest microbial population counts (fungal and bacterial)
in all years, followed by the inorganically treated plot and
the control at all locations. The Pakhribas location had the
highest bacterial and fungal population across all
treatments. A significant change in fungal population was
observed between treatments and experimental sites.
Across all treatments, the Jumla location had the lowest
fungus population and Pakhribas had the highest.
Altitude, Bacterial Population, Farmyard Manure, Fungal Population, NPK.