IJIRST –International Journal for Innovative Research in Science & Technology| Volume 1 | Issue 11 | April 2015 ISSN (online): 2349-6010 All rights reserved by www.ijirst.org 462 Influence of Integrated Nutrient Management Practices on Yield and Yield Attributes, and Economics of Transplanted Rice (Oryza Sativa) in South Zone of Tamil Nadu R. Jeyajothi S. Nalliah Durairaj Ph. D. Scholar Professor & Head of the Department Department of Agronomy Department of Applied Science Tamil Nadu Agricultural University, Coimbatore – 641 003 Agricultural College and Research Institute, TNAU, Killikulam–628 252 Abstract A field investigation was carried out during rabi season (Pishanam rice) of 2012-2013 at wetland of Central Farm, Agricultural College and Research Institute, TNAU, Killikulam, to study the effect of integrated nutrient management practices on yield and yield attributes, and economics of transplanted rice. The treatments were laid out in a Randomized Block Design and replicated thrice using the rice variety ADT(R) 45. Among the different nutrient management practices, application of GLM @ 6.25 t ha-1 + Azophosmet + 100 % NPK registered significantly the highest yield attributes. The grain yield was increased, when GLM was integrated with 100 % NPK application (6030 kg ha-1). The grain yield was further increased, when Azophosmet was applied through seed and soil application along with GLM and 100 % NPK (6617 kg ha-1). However, it was on par with application of FYM + Azophosmet + 100 % NPK. The same trend was noticed in straw yield also. Application of GLM + Azophosmet + 100 % NPK recorded the highest net return of 74,108 ha-1 and B:C ratio of 3.63. From the experimental results, it could be enlightened that application of GLM @ 6.25 t ha-1 at basal, Azophosmet application through seed treatment @ 600 g ha-1 and soil application @ 2 kg ha-1 and recommended fertilizer dose of 150:50:50 kg NPK ha-1 could be considered as a better option for achieving higher productivity and profitability of ADT (R) 45 rice under transplanted condition. Keywords: Azophosmet, Economics, Farmyard Manure, Greenleaf manure, Yield attributes and Yield _______________________________________________________________________________________________________ I. INTRODUCTION Rice is one of the most important food grains produced and consumed all over the world. Global rice demand is expected to rise from 439 million tonnes in 2010 to 496 million tonnes in 2020 and further increase to 553 million tonnes in 2035 (FAO, 2013). This shows an overall increase of 26 per cent in the next 25 years, thus global rice yields must raise much faster. Among the rice growing countries, India has the largest area (44 million hectares) and it is the second largest producer (131 million tonnes) of rice next to China (197 million tonnes). The rice productivity in India is 2.98 t ha -1 , while the world average is 4.25 t ha -1 (IRRI, 2011). To meet the food requirement of the growing population, the rice production has to be enhanced with good management practices with shrinking availability of land and water resources condition. The increasing demand for rice grain production has to be achieved by using an integration of organic and inorganic fertilizer to maintain the sustainability in crop production. Probably, there will be no universally best integrated nutrient management practice. Thus more efforts are needed to identify the improved nutrient management strategy for a particular target environment. II. MATERIALS AND METHODS A field investigation was carried out during rabi season (Pishanam rice) of 2012-2013 at wetland (Field number 37a of ‘B’ block) of Central Farm, Agricultural College and Research Institute, Tamil Nadu Agricultural University, Killikulam (8°46' N latitude and 77°42' E longitude at an altitude of 40 m above MSL). Experimental field soil was sandy clay loam in texture with slightly alkaline in reaction (pH 7.6) and electrical conductivity of soil was 0.32 dSm -1 . The fertility status of soil was low in available N (252 kg ha -1 ), and with medium levels of available P 2 O 5 (19 kg ha -1 ) and K 2 O (246 kg ha -1 ) content. The soil was medium status in organic carbon content (0.55%). The treatments were laid out in a Randomized Block Design and replicated thrice. The treatments were: T1- Farmyard manure (FYM) @ 12.5 t ha -1 + 100 % N and P, T2 - FYM @ 12.5 t ha -1 + 75 % N and P, T3 - Green leaf manure (GLM) @ 6.25 t ha -1 + 100 % N and P, T4 - GLM @ 6.25 t ha -1 + 75 % N and P, T5 - FYM @ 12.5 t ha -1 + Azophosmet + 100 % N and P, T6 - FYM @ 12.5 t ha -1 + Azophosmet +75 % N and P, T7 - FYM @ 12.5 t ha -1 + Azophosmet, T8 - GLM @ 6.25 t ha -1 +