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Effect of Integrated K Management on Productivity and Nutrient Use Efficiency of Maize-Wheat Cropping System

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Title Effect of Integrated K Management on Productivity and Nutrient Use Efficiency of Maize-Wheat Cropping System
 
Creator Sanjeev Kumar, Shiva Dhar, R.S. Yadav, M. Chandrakala, S.A. Kochewad, L.R. Meena, L.K. Meena, Magan Singh and Arpan Bhowmik
 
Subject productivity, Nutrient use efficiency, maize, wheat, Potassium
 
Description PhD thesis
A field experiment was conducted during the rainy (June - October) and winter (November
– March) seasons for two years during 2010-2012 at research farm of ICAR - Indian
Agricultural Research Institute, New Delhi, India. The experiment was laid out in a
randomized block design consisting of seven treatments and three replication. Results
revealed the integrated application of 90 kg K ha-1 supplemented through muriate of potash
(MOP) @ 60 kg K and farmyard manure (FYM) @ 30 kg K resulted in highest grain yield
of 4.93 t ha-1 and biological yield of 11.71 t ha-1 in maize. Similarly, highest grain yield of
5.44 t ha-1 and biological yield of 14.03 t ha-1 were observed in treatment applied with
integrated dose of K @ 90 kg K ha-1 supplemented through MOP and FYM in wheat crop.
The highest uptake of K was observed under treatment applied through 30 kg K through
MOP + 30 kg K through FYM in both cropping cycles. Nutrient use efficiency of N, P and
K increased by K application. In soil, decline was observed in different fractions of K
irrespective of different applied K treatments. All the treatments where K was added
showed a negative balance of K availability in soil. Application of 60 kg K ha-1 through
MOP in both the season showed minimum negative K balance (-281.3 kg ha-1). Integrated
K application @ 90 Kg K ha-1 resulted in highest exchangeable and nonexchangeable K in
the soil for both seasons. To achieve a sustained yield level, nutrient use efficiency and soil
fertility integrated K application @ 60 kg K ha-1 for the rainy season in maize and a dose
of 60 kg K ha-1 through MOP alone in the winter season for wheat crop may be
recommended
 
Date 2020-07-01T06:00:56Z
2020-07-01T06:00:56Z
2018-08-31
 
Type Research Paper
 
Identifier 2319-7706
http://krishi.icar.gov.in/jspui/handle/123456789/37927
 
Language English
 
Relation Not Available;
 
Publisher Excellent publishers