Targeted yield approach for optimizing the fertilizer prescriptions for chickpea

Gautam, P. and Singh, S. and Ghosh, D. and Saxena, A.K. (2014) Targeted yield approach for optimizing the fertilizer prescriptions for chickpea. International Journal of Basic and applied Agricultural Research, 12 (1). pp. 65-67.

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Abstract

To establish the relationship between soil tests and response of chickpea to applied fertilizers, a field experiment was conducted during 2003-2004 following Ramamoorthy's targeted yield approach on Aquic Hapludoll soils of Uttarakhand. Using the data on grain yield, initial soil test values, applied fertilizer doses and nutrient uptake, the basic parameters viz., nutrient requirement, contribution from soil and fertilizers were computed. It was found that nutrient requirement for production of one quintal of chickpea was 4.91, 0.63 and 3.27 kg N, P and K, respectively. Efficiency of soil nutrient was 25.54, 41.73 and 19.71% while that of fertilizer 114.23, 15.38 and 109.08% for N, P and K respectively. Making use of these basic parameters, fertilizer prescription equations were developed for chickpea (var. Radhey) and an estimate of fertilizer doses was formulated for a range of soil test values and desired yield targets. It was observed that fertilizer rates increased as yield targets of chickpea increased while its rates decreased as the initial soil test level increased.

Item Type:	Article
Uncontrolled Keywords:	Chickpea, Soil test crops response, Yield target, Fertilizer prescription, Mollisol
Author Affiliation:	Department of Soil Science, College of Agriculture, G B. Pant University of Agriculture and Technology, Pantnagar - 263 145, U.S. Nagar, Uttarakhand, India.
Subjects:	Crop Improvement
Divisions:	Chickpea
Depositing User:	Mr B Krishnamurthy
Date Deposited:	04 Aug 2015 07:31
Last Modified:	04 Aug 2015 07:31
URI:	http://eprints.icrisat.ac.in/id/eprint/13666

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