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The present study discusses the primary productivity in the middle course of Yamuna River canal in Yamunanagar of Haryana, India by investigating different physico-chemical parameters like pH, temperature, TDS and DO with the help of water testing kit. The light and dark bottle technique was used to measure primary production. For estimating the primary productivity, various physico-chemical parameters is to be analysed and its study play a vital role in interpreting the health of aquatic water body. Three sampling locations were established along the course of the river at the average distance of 15 kms. starting from Dadupur head then at Yamuna Nagar and at last Radaur in March, 2015. Wide variations were observed in Temperature (15.9-16.8°C), pH (7.98-8.14), TDS (143-173 ppm), Dissolved Oxygen (7.64-8.56 mg/l), GPP (107.81-170.31 mgCm-3water.hour-1), NPP (25.31-120.42 mgC m-3water.hour-1). The overall average values for the GPP and NPP in Yamuna River canal, based on the data of all the three stations were 142.46 mgC m-3water.hour-1 GPP & 55.59 mgC m-3water.hour-1 NPP. The main focus of the study was to estimate the Net Primary Productivity in Yamuna River canal at various regions for analysing the water quality and fi nd the pollution level due to increased anthropogenic activities in the region as the canal water utilizes for drinking, irrigation, industrial and several domestic purposes.

Comparative study of primary productivity in Yamuna River canal of different parts of Yamunanagar Haryana, India