A field experiment was conducted on vertisols at Organic Farming Research Institute, University of Agricultural Sciences, Raichur coming under northern Karnataka during rabi season of 2015-16 to study the yield potential (q ha-1 ) and economics of rabi sorghum (Sorghum bicolor L.) as influenced by different crop residues and green biomass composts. The experiment consisted of fifteen treatments, of which twelve treatments were based on nitrogen supply though different composts, one recommended dose of fertilizer, one recommended organic and inorganic fertilizers and another was absolute control. Significantly higher grain yield (39.9 q ha-1 ) and stover yield (13.2 tha1 ) was recorded with application of FYM @ 3 t ha-1 + RDF (50:25 N:P2O5 kg ha-1 )followed by recommended NP fertilizers (T13: 37.2 q ha-1 ) and Cotton stalks +Redgram stalks + Glyricidiasp. with C: N ratio of 30:1 compost @ 50 kg N equivalent (T12: 36.6 q ha-1 ). The lowest grain yield was recorded with absolute control (T15: 18.4 q ha-1 ). Significantly higher B:C (3.08) was recorded with RDF(50:25 N:P2O5 kg ha-1 ) + FYM @ 3 t ha-1 application followed Cotton stalks +Redgram stalks + Glyricidia sp. with C: N ratio of 30:1 compost @ 50 kg N equivalent (T12:2.90) over other treatments. Application of recommended FYM @ 3 t ha-1 15 days before sowing along with 50 kg of nitrogen and 25 kg of phosphorus per hectare at the time of sowing recorded higher dry matter production, grain and stover yield and net returns and benefit: cost ratio.
Cotton stalks, Compost, RDF, Red stalks, Sorghum
Anonymous (2015). District wise area, production and productivity of major crops in Karnataka. Directorate of Economics & Statistics, Bengaluru.
Arjun, S. and Anil, K. (2009). Effect of organic and integrated nutrient management on productivity and economics of rabi sorghum. Karnataka J. Agric. Sci., 22(1): 11-14.
Feisal,M.Ismaeil, Awad O. Abusuwar and Ahmed M.El Naim. (2012). Influence of chicken manure on growth and yield of forage sorghum (Sorghumbicolor L.).Inte.J.Agric.& Forstry., 2(2):56-60.
Guled, M. B., Gundlur, S. S., Hiremath, K. A. and Surkod, V. S. (2003). Effect of organic and inorganic fertilizers on uptake of major nutrients by rabi sorghum. Karnataka J. Agric. Sci., 16(2): 304-306.
Ibrahim Elasdig Ibrahim, Ali Eltoum Hassan, Elasha,A. and SalihElagab. (2011). Effect of organic manure on yield and yield components of rainfed sorghum in Gedarif state. J. Sci. & Tech., 12(4): 48-57.
Kobayashi, Y., Suzuki, S., Watanabe, N., Yoshizawa, T., Ueki, Y., Suzuki, T. and Kaneda, S. (2008). Effect of long-term organic matter application to double cropping paddy fields on rice (Oryza sativa L.) and barley (Hordeum vulgare L.) yields in Japan. Bull. of the TochigiPrefectural Agric. Expt. Station, 59: 11-23.
Krishnamurthy, D. (2003). Impact of sole and integrated use of organics on the productivity, quality and shelf-life of Bangalore rose red onion (Allium cepa L.). M.Sc Thesis, Univ. of Agric. Sci., Bangalore.
Nandapure, S. P., Sonune, B.A., Gabhane,V.V., Katkar, R.N. and Patil, R.T. (2011). Influence of long term fertilization on micronutrients availability, their uptake and productivity of sorghum â€“ wheat sequence under semi-arid condition on a vertisol. Crop Res., 42(1,2&3):35-39
Panse, V. G. and Sukhatme, P. U. (1967). Statistical Methods for Agricultural Workers. ICAR, New Delhi.
Pholsen, S. and Sukari,A. (2004). Effect of organic amendment and chemical fertilizer on growth, yield and fodder quality of a forage sorghum(Sorghumbicolor L.). Paki. J. Bio. Sci.,7(4): 651-658.
Taylor, J R N. (2003). Overview: Importance of sorghum in Africa. Workshop on the Proteins of Sorghum and Millets: Enhancing Nutritional and Functional Properties for Africa held at Pretoria, South Africa, 2-4 April, 2003. Paper 01, pp.1-21.
Zafar, M., Abbasi,M.K., Arjumend,T. and Jabran,K. (2012). Impact of compost, inorganic phosphorus fertilizers and their combination on maize growth, yield, nutrient uptake and soil properties. J. Animal& Plant. Sci., 22(4): 1036-1041.
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