Abstract

                               Field experiment was conducted at wetland farm of Tamil Nadu Agricultural University, Coimbatore during samba season of 2014 to study the effect of organic and inorganic sources of nutrients on transplanted lowland rice. The experiment was laid out in a randomized block design with three replications and nine treatments. Rice variety CO(R) 48 was used. Dhaincha (Green manure), vermicompost, farmyard manure were incorporated before transplanting of rice as per treatment schedule. The observations on nutrient uptake and yield were recorded. Higher nutrient uptake, soil available nitrogen, phosphorus, potassium and organic carbon were recorded with application of 100 % NPK through inorganic fertilizers + 6.25 t dhaincha (Green manure) followed by application of 100 % N through dhaincha (Green manure) + balance P and K through inorganic fertilizers. The results revealed that higher grain yield (6248 kg ha-1) was obtained with application of 100 % NPK through inorganic fertilizers + 6.25 t dhaincha (Green manure) followed by Application
of 100 % N through dhaincha (Green manure) + balance P and K through inorganic fertilizers.

Key words : Rice, Organic manure, Soil nutrient status, Yield.