~ 146 ~ Journal of Pharmacognosy and Phytochemistry 2017; 6(6): 146-151 E-ISSN: 2278-4136 P-ISSN: 2349-8234 JPP 2017; 6(6): 146-151 Received: 14-09-2017 Accepted: 15-10-2017 RG Goswami Ph.D. Reaserch Scholar, Department of Soil Science and Agricultural Chemistry, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India RK Bajpai HOD, Department of Soil Science and Agricultural Chemistry, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India Alok Tiwari Scientiest, Department of Soil Science and Agricultural Chemistry, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India V Bachkaiya Scientiest, Department of Soil Science and Agricultural Chemistry, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India Correspondence RG Goswami Ph.D. Reaserch Scholar, Department of Soil Science and Agricultural Chemistry, Indira Gandhi Agricultural University, Raipur, Chhattisgarh, India Effect of nutrient management and rice establishment on root CEC of rice under normal & delay planting condition during kharif RG Goswami, RK Bajpai, Alok Tiwari and V Bachkaiya Abstract A field experiment was conducted on a deep black clay loam (Vertisols) soil at research cum Instructional farm, Department of Soil Science and Agril. Chemistry, IGKV, Raipur (C.G) during kharif seasons, 2016 to study the Effect of nutrient management and rice establishment on Root CEC of rice under normal & delay planting condition during kharif. The experiment comprises various nutrient management as different source of N fertilizers and rice establishment method laid out in Strip plot design with four replications. The details of the treatments were; four level of nutrient management, seven level of rice establishment and two level of planting time. The result of the experiment revealed that, Root CEC at 30 DAT of T5N3-FRBT(M) + USG (46.25 meq 100 -1 g) which was statistically higher than all other interaction and T4N1-FRBT (S) + Control (15.75 meq 100 -1 g) had the minimum Root CEC at 0-20 and 20-40 cm depth respectively under kharif- NP and highest in T4N4-FRBT (S)+Neem cake coated urea (38.50 meq 100 -1 g) and lowest in T7N1- SRI+ Control (21.25 meq 100 -1 g) & T4N1- FRBT(S) + Control (15 meq 100 -1 g ) at 0-20 and 20-40 cm depth respectively under DP. Similarly the higher Root CEC was found in T4N4-FRBT (S)+Neem cake coated urea (47 meq 100 -1 g) and minimum under T4N1- FRBT (S) + Control (16.50 meq 100 -1 g) at 0-20 and 20-40 cm depth respectively under DP at stage of maximum flowering. It was also reported that Root CEC was positively significantly influence by the interaction of (establishment method x nutrient management) under 0-20 and 20-40 cm depth at 30 DAT and maximum flowering condition under both i.e. normal and delay planting condition. Keywords: nutrient management, establishment, planting time, root CEC, FRBT and USG Introduction Rice (Oryza sativa L.) is the most important and extensively cultivated food crop that has been referred as “Global Grain” because of its use as prime staple food in about 100 countries of the world. Its cultivation is of immense importance to food security of Asia, where > 90 % of the global rice is produced and consumed. Rice provides 32-59% of the dietary energy and 25- 44% of the dietary protein in 39 countries. In India, it accounts for >40% of food grain production, providing direct employment to 70% people in rural areas (New Delhi, 2012). Rice is the most consumed cereal grain in the world, constituting the dietary staple food for more than half of the planets human population. Globally, rice is the second most widely consumed cereal next to wheat and it has occupied an area of 163.2 million hectares, with a total production of 719.7 million tonnes (Anonymous, 2014a) [1] . Rice provides about two- third of the calorie intake for more than two billion people in Asia and a third of the calorie intake of nearly one billion people in Africa and Latin America (Shastry et al., 2000) [12] . Hence, there is a need to increase the productivity of rice. Chhattisgarh popularly known as “Rice Bowl of India” occupies an area around 4.95 million ha. With the share in rice production in India 3.39% with production 7.58 million tons in CG and productivity 1532 Kg/ha. (IGKV, Raipur, 2013) which is lower than national average. In kharif season it occupies an area of around 3.68 million hectares with production of 8.20 million tones which contributes 8.65 and 6.30% to all India, respectively and productivity of 2020 kg ha-1 in 2013-14 (Anonymous 2015) [2] . Productivity with SRI method is 6 to7 tonnes of rice/ha. Compare to usual yields of 2 to 4 tonnes/ha with farmers practices. The estimation of nutrient content in soil profiles will provide the Information regarding the status and nature of removal or uptake pattern of different nutrients by the growing plants root as well as the nature of the movements of various nutrients within the soil profile. Many factors are responsible for increasing yield and quality of crop. Among these proper and balanced application of fertilizers is one of the most important factor contributing towards higher productivity, and good health of the soil. The organic manures improve the soil health and there by enhance the crop yield per unit of applied nutrient.