parameters on the diversity and distribution of phytoplankton in the different paddy sites. Principal component (PC)1 explains 53.9% of the overall variance and PC2 44.2% contributing 98.1% in the paddy field sites (Table 2). In the paddy – field sites, pH, potassium, sodium, nitrate – nitrogen, phosphate – phosphorus and conductivity were the factors that contributed to phytoplankton diversity and density. There was a positive significant correlation between pH and potassium (r = 0.99, P ≤ 0.01), and pH and sodium (r = 0.977, P ≤ 0.05). a negative correlation (r = -0.992, P ≤ 0.01) was observed between pH and evenness (Table 3).