...www.ccsenet.org/jas Journal of Agricultural Science Vol. 3, No. 3; September 2011 Effect of Organic Fertilizer on Growth and Yield Components in Rice (Oryza sativa L.) Morteza Siavoshi (Corresponding author) Ph.D. Student, Department of Botany, Fergusson College, Pune, India Tel: 91-989-098-7811 E-mail: morteza_siavoshi@yahoo.com Alireza Nasiri Department of Agronomy, Science and Research branch Islamic Azad University, Tehran, Iran E-mail: a.nasiri1362@gmail.com Shankar. L. Laware Associate Professor, Department of Botany, Fergusson College, Pune, India Tel: 91-982-274-2384 Received: December 14, 2010 Abstract In order to study the effect of organic fertilizer on growth and yield components in rice, an experiment was carried out in 2008 and 2009, in randomized block design based on 4 replications. The chicken manure, cow manure and paddy rice were mixed together in 1:1:0.5 ratio to from organic fertilizer. The treatments of organic fertilizer were given in 5 levels (0.5, 1.0, 1.5, 2.0 and 2.5 ton/ha). At one level organic fertilizer 1.5 ton/ha was mixed with inorganic fertilizers (N-50, P-25, K-25 kg / ha) and recommended dose of inorganic fertilizer-NPK (N=100, P=50, K=50 kg/ha) was used as check. The plants without treatments were served as control. Grain yield and its components were significantly increased in all the treatments over control. The maximum grain yield in 2008 (4335.88 kg/ha) was noted in plants treated with 2 ton/ha organic fertilizer and it was (4662...
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