Relationship Between The Quantity And Intensity Of Potassium In Some Maize Soils Of Central Kashmir (India)

Authors

  • S A Bangroo Krishi Vigyan Kendra, SKUAST-K, Kulgam, 192 233, Jammu & Kashmir (India)
  • M A Wani Division of Soil Science, S.K. University of Agriculture Sciences & Technology of Kashmir (SKUAST-K), Shalimar, Srinagar - 190 025, Jammu & Kashmir (India)
  • M I Bhat Krishi Vigyan Kendra, SKUAST-K, Budgam, 193 411, Jammu & Kashmir (India)

DOI:

https://doi.org/10.48165/

Abstract

Plant K uptake depends on its intensity, capacity and removal rate of soils  which can be modeled using K exchange-equilibrium obtained from  quantity-intensity (Q/I) isotherms i.e. activity ratio at equilibrium (AReK),  labile K (KL), potential buffering capacity (PBCK) and free energy change  (-∆G). These relations were studied in five major maize growing soils of  district Ganderbal (Kashmir, India). AReKranged from 0.26 to 1.21 x 10-3  (Mol L-1)0.5, KL from 0.26 to 0.67 cmolc kg-1, PBCKfrom 23.2 to 37.6 cmolc kg-1/(Mol L-1)0.5 and -∆G from 3.98 to 4.81 K cal mol-1oK-1. AReK was found  significantly correlated with clay (r = 840**) and K0 (r = 988*). Magnitude  of labile K (KL), K held on non-specific sites (K0) and specific sites (KX)  were higher in Sumbal silty clay. The negative values of ∆G indicated that  K- (Ca + Mg) exchange in all the soils was spontaneous.

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References

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Published

2014-08-12

Issue

Vol. 16 No. 2 (2014): Applied Biological Research (Jul) 2014

Section

Short Communications

How to Cite

Relationship Between The Quantity And Intensity Of Potassium In Some Maize Soils Of Central Kashmir (India). (2014). Applied Biological Research, 16(2), 255–260. https://doi.org/10.48165/
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