2013•International Journal of Agronomy and Plant ProductionRequires access
Effect of chemical fertilizers and bio-fertilizers application on some morpho-physiological characteristics of forage sorghum
S N Eshaghi Sardrood, Y Raei, A Bagheri Pirouz, Behzad Shokati
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Abstract
To evaluate effect of chemical and biological fertilizers on growth of the forage sorghum, a factorial experiment was arranged as factorial, based on randomized complete block design with three replications at the research farm of the faculty of agriculture, university of Tabriz, Iran in 2011. Treatments were chemical fertilizers levels (210 Kg/ha (100%), 150 Kg/ha triple superphosphate (100%), (100%) + triple superphosphate (S.P.T, 100%), + S.P.T. and control) and bio-fertilizers (biosuper, phosphate barvar-2, biosuper + phosphate and control). Results indicated that the highest (3090.99 g.m2) and the lowest (1226/29 g.m2) forage yield and plant height were obtained from urea (100%) + S.P.T. (100%) + phosphate Barvar-2 and control, The highest and lowest of leaf area index (LAI) were achieved in urea (100%) + S.P.T. (100%) + biosuper + phosphate Barvar-2 and respectively. Chemical and bio-fertilizers had significant effects on Natural Detergent Fiber (NDF), as the control and treatment of 50% + S.P.T. + phosphate Barvar-2 produced higher and lower NDF than other treatments Also the most gas production was observed in 50% + S.P.T. + biosuper + phosphate Barvar-2. In conclusion, application of 100% chemical fertilizer with bio-fertilizers resulted the maximum of quantitative values such as forage yield, and the reduced doses of chemical fertilizer (50%) with bio-fertilizers had more positive effects on qualitative traits such as NDF.