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Authors
Affiliations
1 Department of Agronomy, Institute of Agricultural Sciences, Bundelkhand University, Jhansi, U.P., IN
2 Directorate of Soybean Research, Indore, M.P., IN
3 Division of Agronomy, I.A.R.I., New Delhi, IN
4 Department of Agronomy, Rajasthan College of Agriculture, Udaipur, Rajasthan, IN
Source
International Journal of Agricultural Sciences, Vol 9, No 2 (2013), Pagination: 692-694
Abstract
A field experiment was conducted at Instructional Farm, Directorate of Soybean Research (DSR), Indore M.P. during 2006-07 and 2007-08 to study effect of potassium application on its transformation and use efficiency under soybean - wheat cropping system. Data revealed that normal sowing date of soybean and wheat recorded significantly higher seed and straw yield (2544 and 2481 and 4908 and 7284 kg ha-1, respectively).Total K uptake by soybean-wheat system and potassium harvest index also higher over late sowing date of both the crops. With respect to K levels, application of 49.80 kg K2O the recorded maximum yield of soybean and wheat, K uptake by soybean, wheat and system and potassium harvest index. The highest agronomic and physiological K use efficiency was associated with 33.2 kg K/ha. Maximum partial factor productivity, recovery efficiency and physiological K use efficiency was recorded with JS 335. Among soybean genotypes, JS 9305 showed its superiority in case of agronomic K use efficiency, internal K use efficiency and recorded higher yield, system, total K uptake and potassium harvest index over control.
Keywords
Potassium Level, Seed, Straw, Yield, Soybean, Wheat, Genotypes, Potassium Transformation, K Use Efficiency
