• An empirical model for estimation of capillary rise from a shallow groundwater table in cropped soil

    • Fulltext

       

        Click here to view fulltext PDF


      Permanent link:
      https://www.ias.ac.in/article/fulltext/sadh/047/0236

    • Keywords

       

      Crop variables; capillary rise; evapotranspiration; lysimeter; shallow groundwater table; Averianov formula.

    • Abstract

       

      The present study investigates the performance of six pre-existing models to estimate the capillary rise from a shallow groundwater table using data from the lysimeters experiment. Essential parameters for estimating capillary rise were observed for nine crop species, i.e., Wheat, Indian mustard, Potato, Maize,Sorghum, Guar, Pea, Spinach, and Tomato. Based on a comparative evaluation, Modified Averianov Formula showed better agreement between the observed and estimated capillary rise than other evaluated models. However, its performance was not satisfactory. An empirical model comprising soil-crop-climatic variables for estimating the capillary rise is proposed using experimental data on nine crop species. Further, the performance of the proposed model was compared with pre-existing models and the observed capillary rise for three cropspecies, i.e., Wheat, Maize, and Pea. The values of R2, NSE, and MBE ranged between 0.82 to 0.85, 0.80 to 0.83, and -0.07 to 0.11, respectively for Wheat, Maize, and Pea, indicating good agreement between observed and the proposed model estimated values.

    • Author Affiliations

       

      ARUNAVA PODDAR1 NAVSAL KUMAR1 VIJAY SHANKAR2

      1. Civil Engineering Department, Shoolini University, Solan, Himachal Pradesh 173229, India
      2. Civil Engineering Department, National Institute of Technology Hamirpur, Hamirpur, Himachal Pradesh 177005, India
    • Dates

       
  • Sadhana | News

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

© 2022-2023 Indian Academy of Sciences, Bengaluru.