Changes In Different Forms Of K In Rice Rhizosphere Under K Application

Authors

  • MS Uddin Dept. of Agriculture, Govt. V.M. College, Saturia, Manikgonj
  • MJ Abedin Mian Dept. of Soil Science, Bangladesh Agricultural University (BAU), Mymensingh
  • MR Islam Dept. of Soil Science, Bangladesh Agricultural University (BAU), Mymensingh
  • MA Saleque Soil Science Division, Bangladesh Agricultural Research Institute (BRRI), Joydebpur, Gazipur
  • AZM Moslehuddin Dept. of Soil Science, BAU, Mymensingh

DOI:

https://doi.org/10.3329/bjar.v36i3.9279

Keywords:

Rice rhizosphere, exchangeable K , non-exchangeable K

Abstract

A pot experiment was conducted with four soils from two locations (BAU farm, Mymensingh and BADC farm, Madhupur, Tangail) in order to monitor the transformation of added K (soil solution K, exchangeable K+ and nonexchangeable K) in BRRI dhan-41 rhizosphere at saturation condition. There were six levels of K viz., 0, 30, 60, 90,120 & 150 kg/ha from MoP. Eight kg soil was taken into each pot. The K concentration in soil solution increased with increasing K addition and decreased with increasing incubation period. Soil solution K was drastically reduced at 45 days due to higher crop uptake. The amount of exchangeable K also increased with increment of added K and gradually decreased over time. The non-exchangeable K increased up to 45 days and then decreased up to 105 days.

Keywords: Rice rhizosphere; exchangeable K+; non-exchangeable K

DOI: http://dx.doi.org/10.3329/bjar.v36i3.9279

BJAR 2011; 36(3): 513-519

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How to Cite

Uddin, M., Mian, M. A., Islam, M., Saleque, M., & Moslehuddin, A. (2011). Changes In Different Forms Of K In Rice Rhizosphere Under K Application. Bangladesh Journal of Agricultural Research, 36(3), 513–519. https://doi.org/10.3329/bjar.v36i3.9279

Issue

Vol. 36 No. 3 (2011)

Section

Articles