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Use of Flyash and Biogas Slurry for Improving Wheat Yield and Physical Properties of Soil

  • R. N. Garg
  • H. Pathak
  • D. K. Das
  • R. K. Tomar
Article

Abstract

This study explores the potential use of by-products of energy production, i.e., (i) flyash from coal-powered electricity generation and (ii) biogas slurry from agricultural waste treatment, as nutrient sources in agriculture. These residues are available in large amounts and their disposal is a major concern for the environment. As both residues contain considerable amounts of plant nutrients, their use as soil amendment may offer a promising win-win opportunity to improve crop production and, at the same time, preventing adverse environmental impacts of waste disposal. Effect of flyash and biogas slurry on soil physical properties and growth and yield of wheat (Triticum aestivum) was studied in a field experiment. Leaf area index, root length density and grain yield of wheat were higher in plots amended with flyash or biogas slurry compared to unamended plots. Both types of amendments reduced bulk density, and increased saturated hydraulic conductivity and moisture retention capacity of soil. The study showed that flyash and biogas slurry should be used as soil amendments for obtaining short-term and long-term benefits in terms of production increments and soil amelioration.

Keyword

biogas slurry bulk density flyash hydraulic conductivity moisture retention capacity wheat 

Abbreviations

CEC

Cation Exchange Capacity

CD

Critical Difference

DAS

Days After Sowing

DMRT

Duncan’s Multiple Range Test

LAI

Leaf Area Index

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Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  • R. N. Garg
    • 1
  • H. Pathak
    • 2
    • 3
  • D. K. Das
    • 1
  • R. K. Tomar
    • 1
  1. 1.Division of Agricultural PhysicsIndian Agricultural Research InstituteNew DelhiIndia
  2. 2.Unit of Simulation and InformaticsIndian Agricultural Research InstituteNew DelhiIndia
  3. 3.Research Fellow of the Alexander von Humboldt Foundation, Forschungszentrum Karlsruhe,Institut fur Meteorology und KlimaforschungGarmischPartenkirchenGermany

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