D.K. Gupta* and V.K. Singh
RMD College of Agriculture & Research Station, Ajirma, Ambikapur, Surguja (Chhattisgarh) – 497001 email id.: gupta_dinesh11@yahoo.co.in
Department of Agronomy,
Indira Gandhi Krishi Vishwavidyalaya, Raipur (C.G.), 492 012 India
Received-08.08.2017, Revised-24.08.2017
Abstract: The field experiment on “Yield maximization of HYV and scented varieties of rice” was conducted during kharif seasons of 2015 at the Research Farm, IGKV, RMD College of Agriculture & Research Station Ambikapur, Surguja (Chhattisgarh). In experiment first the main plot consisted two treatment of varieties viz. Chandrahasni (V1) and Bamleshwari (C2). While the sub- plot consisted of seven treatments of nutrient management viz. N1- 20×10 cm with RDF(120:60:40 NPK kg/ha), N2- 20×10 cm with 125% RDF(10% N at flowering)+5t FYM, N3- 15×10 cm with 125% RDF(10% N at flowering)+5t FYM, N4- 20×10 cm with 150% RDF(K in two splits + 10% N at flowering)+5t FYM/ha, N5- 15×10 cm with 150% RDF(K in two splits +10% N at flowering)+5t FYM/ha, N6- 20×10 cm with 150% RDF(K in two splits + 10% N at flowering)+10t FYM/ha and N7- 15×10 cm with 150% RDF(K in two splits + 10% N at flowering)+10t FYM/ha. In experiment second the main plot consisted two treatment of varieties viz. Jeerafool (V1) and Pusa Basmati (C2). While the sub- plot consisted of seven treatments of nutrient management viz. N1- 20×10 cm with RDF(60:50:50 NPK kg/ha), N2- 20×15 cm RDF+5t FYM, N3- 20×15 cm with RDF + 5t FYM + 5 t GM, N4– 20×15 cm with 75% RDF+10t FYM/ha, N5- 20×15 cm with 50% RDF+10t FYM/ha+ 10 t GM + mechanical weeding, N6- 20×15 cm with 50% RDF+10t FYM/ha+ 10 t GM + mechanical weeding + silicon spray + ZnSo4 and N7- 20×15 cm with 150% N + 10 t FYM +Staking. The both experiment was laid out in split plot design with three replication. In experiment first the rice variety Bamleshwari recorded significantly higher grain (7.93t/ha) and biological yield (16.82 t/ha) over Chandrahasni (6.97t/ha) and (14.74t/ha) which was 13.7 and 14.1% higher. In case of nutrient management practices the higher grain and biological yield was obtained with closer spacing and 150% RDF +10 t FYM (7.83 and 16.67 t/ha) followed by same geometry and dose of NPK + 5t FYM/ha (7.70 and 16.55 t/ha) the yields with these two treatments were at par, however wider spacing (20×10cm) 150% RDF+10t FYM gave marginally lower grain 2.2 and total yield 1.4% over closer spacing 15×10 cm. 150% RDF + 5t FYM/ha may be on account of higher plant population (33% higher hills/m2) per unit area and the difference of only organic manure FYM 5t/ha. In experiment second the Local scented fine rice variety Jeerafool had significantly tallest plants while Pusa Basmati-1 had the shortest plants, number of total tillers, effective tillers (panicle/m2) and 1000-grain weight were significantly higher under Pusa Basmati -1 but panicle length number of grains/ panicle and panicle weight were significantly higher under jeerafool over Pusa Basmati -1. The data grain yield showed significant differences in the both rice cultivars. Jeerafool produced 11.4 % higher grain yield over Pusa Basmati-1. Application of 50% NPK of RDF with 10 t FYM + 10 t GLM+, mechanical weeding + silicon 3% spray+ 20 kg/ha ZnSo4 produced grain and biological yield of 4.3 and 9.16 t/ha, respectively while both the yields were almost equal in application of 150% N only with 10t FYM + staking and the yield were also at par with the treatment i.e, 50% NPK + 10t FYM + 10t GLM + mechanical weeding.
Keywords: Yield maximization, Rice, Fertilizer, Production
REFERENCES
Jha, S.K., Tripathi, R.S. and Malaiya, S. (2004). Influence of integrated nutrient management practices on growth and yield of scented rice (Oryza sativa L.). Annals Agricultural Research 25 (1): 159-161.
Lakpale, R., Pandery, N. and Tripathi, R.S. (1999). Effect of levels of nitrogen and preconditioned urea on grain yield and N status in plant and soil in rainfed rice. Indian journal of Agronomy 44 (1): 89-93
Mhaskar, N.V., Thorat, S.T. and Bhagat, S.B. (2005). Effect of nitrogen levels on leaf area index and grain yield of scented rice vaieties. Journal Soils and Crops. 15 (1): 218-220.
Mishra, M.M. (1992). Enrichment of organic manures with fertilizers. (In) Non-traditional sectors for Fertiliser Use, pp. 48-60. Tendon, H.L.S. (Ed.) fertilizer Development and Consultant Organization, New Delhi.
Sarawgi, S.K, Sarawgi, A.K., Purohit, K.K. and Khajanji, S.N. (2006). Effect of nutrient management on tall and short to medium slender scented rice verities in alfisol of Chhattisgarh plain. Journal of Agricultureal Issues 11 (1): 91-93.
Sengar, S.S., Wade, L.J., Baghel, S.S., Singh, R.K. and Singh, G.(2000). Effect of nutrient management on rice in rainfed low land of southeast M.P. Indian Journal of Agronomy 45 (2): 315-322.