International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2018, Volume : 6, Issue : 2
First page : (914) Last page : (919)
Article doi: : http://dx.doi.org/10.18782/2320-7051.5147
Studies on Yield Maximization in Soybean (Glycine max.) through Different Approaches of Fertilizer Recommendation in Vertisol
C. P. Sankalpa1* and K. K. Math2
1Ph.D Scholar and 2 Professor
Department of Soil Science and Agricultural Chemistry, College of Agriculture, Dharwad, UAS, Dharwad
*Corresponding Author E-mail: sankalpacp@gmail.com
Received: 6.07.2017 | Revised: 20.08.2017 | Accepted: 26.08.2017
ABSTRACT
The field experiments were conducted on yield maximization in soybean through different fertilizer recommendation approaches at the Main Agricultural Research Station, Dharwad during kharif season of the year 2015 and 2016. The treatments consisted of different fertilizer recommendation approaches viz., site specific nutrient management (SSNM) and soil test crop response (STCR) each targeted yield at 20, 25. 30 and 35 q ha-1 and soil test laboratory (STL) approach and these were compared with graded levels of fertilizer (125 and 150 % of RDF) and control (RDF). The experiment laid out in randomized completely block design with twelve treatments replicated thrice.
The yield attributes and yield of soybean was significantly influenced by different nutrient management practices in both the seasons. Pooled data indicated that the highest grain yield was recorded in the treatment SSNM yield targeted at 30 q ha-1 which was significantly superior over 125 and 150 per cent of RDF, STL approach, SSNM yield targeted at both 20 and 25 q ha-1 and STCR yield targeted at 20, 25, 30 and 35 q ha-1 and control but was on par with SSNM yield targeted at 35 q ha-1 and the magnitude of increase was 48.62 and 40.0 per cent over 125 and 150 per cent of RDF, respectively and 48.00 and 36.80 per cent in SSNM yield targeted at 20 and 25 q ha-1, respectively, 17.28, 45.43, 38.27 and 30.59 per cent, in STCR yield targeted at 20, 25, 30 and 35 q ha-1, respectively. Accordingly, benefit cost ratio was also higher in the treatment with SSNM yield targeted at 30 q ha-1 and lowest ratio was recorded in 125 per cent of RDF and control. Therefore, fertilizer recommendation by SSNM yield targeting at 30 q ha-1 helps in getting higher yield with higher net returns over other approaches.
Key words: Site specific nutrient management, Soil test crop response, Soil test laboratory method, Targeted yield, Soybean and Graded levels of fertilizer.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Sankalpa, C. P. and Math, K. K., Studies on Yield Maximization in Soybean (Glycine max.) through Different Approaches of Fertilizer Recommendation in Vertisol, Int. J. Pure App. Biosci.6(2): 914-919 (2018). doi: http://dx.doi.org/10.18782/2320-7051.5147
