Impacts of nutrients nitrogen, phosphorus, potassium and their role in the sediment of Manakudy estuary, Tamilnadu, S. India

Seasonal variation of nutrients like nitrogen, phosphorus, potassium of the sediment were studied in six stations. The study was conducted at monthly once during the morning time interval from May 2011 to April 2012. The pH (8.71) of the soil remains alkaline in nature throughout the study period. Nitrogen (82.67mg100g) in station 4, phosphorus 21.08 (mg/100g) in station 6 and potassium in station 4 21.08 (mg/100g). Sediment nutrients brings numerous pollutants and play an important role in the remobilization of contaminations in aquatic system between water and sediments. Nutrients becomes maximum ranges in the freshwater flow of riverine sides because of more plantations and agricultural wastages. The nutrients of sediments in the six stations were subjected to two way Anova found that they were not significant. The ecosystem of Manakudy estuary adversely effected by nutrient pollution.