National Academy Science Letters

, Volume 41, Issue 4, pp 193–196 | Cite as

Adaptation Mechanisms of Winter Pulses Through Rhizospheric Modification in Mild-Alkaline Soil

  • K. K. HazraEmail author
  • S. S. Singh
  • C. P. Nath
  • D. N. Borase
  • N. Kumar
  • A. K. Parihar
  • D. K. Swain
Short Communication


The root induced changes in soil chemical and biological properties of five winter pulses (rajmash, fieldpea, lathyrus, lentil, and chickpea) were examined in mild-alkaline soil (pH ~ 7.8). Rhizospheric acidification was common in all pulses, and chickpea resulted in maximum reduction in rhizospheric pH in (4.8%). The resulted acidification substantially influenced the rhizospheric nutrient availability and scale of increase was highest for available-P. The relative changes for different nutrients followed the sequence P (37.4%) > Zn (35.8%) > Fe (32.4%) > N (18.4%) > S (17.5%). However, the available K did not differ significantly. Soil biological indicators like microbial biomass carbon (C) and fluorescein diacetate were enhanced by 63–243.5 and 9.8–36.3%, respectively over the bulk soil. Likewise, improvement in soil organic C was also evident. The rhizospheric soil had higher passive C-pool indicating pulses can improve soil resistant C-fractions, which persists for a longer time. Among the pulses, chickpea had the maximum rhizospheric alteration and thus distinguished as most potential winter pulse crop under the mild-alkaline soil.


Carbon pools Fluorescein diacetate Pulse rhizosphere Soil available nutrients Soil microbial biomass carbon 



The study was funded by ICAR-Indian Institute of Pulses Research, Kanpur, India.


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Copyright information

© The National Academy of Sciences, India 2018

Authors and Affiliations

  • K. K. Hazra
    • 1
    • 2
    Email author
  • S. S. Singh
    • 1
  • C. P. Nath
    • 1
  • D. N. Borase
    • 3
  • N. Kumar
    • 1
  • A. K. Parihar
    • 4
  • D. K. Swain
    • 2
  1. 1.ICAR- Indian Institute of Pulses Research (ICAR-IIPR)KanpurIndia
  2. 2.Agricultural and Food Engineering DepartmentIndian Institute of Technology (IIT) KharagpurKharagpurIndia
  3. 3.Basic Science DivisionICAR-Indian Institute of Pulses Research (ICAR-IIPR)KanpurIndia
  4. 4.Crop Improvement DivisionICAR-Indian Institute of Pulses Research (ICAR-IIPR)KanpurIndia

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