The Physico-chemical and biological analysis of water was carried out on the four paddy field of Thoubal District.
Temperature, transparency, pH, dissolved oxygen, carbondioxide, chloride, total alkalinity acidity, calcium hardness NO2 and
NO3 etc. are the favour on the plankton in the paddy field. Phytoplankton increase during rainy season while decrease in
zooplankton during winter. A total 492 number of phytoplankton & 471 zooplankton were recorded from the paddy field during
study period September to November 2019.