Journal of the Indian Society of Soil Science
SCOPUS
  • Year: 2007
  • Volume: 55
  • Issue: 4

Residual effect of integrated nutrient management with coir pith compost and other organics on subsequent ragi crop yield and chemical properties of vertisols

  • Author:
  • A.R. Sushma, P.K. Basavaraja, M.S. Badrinath, S. Sridhara
  • Total Page Count: 5
  • Page Number: 500 to 504

Department of Soil Science and Agricultural Chemistry, Agriculture College, UAS Campus, GKVK, Bangalore, Karnataka, 560 065

*Corresponding author: (E-mail: pkbraj@sancharnet.in)

Abstract

In field experiment the residual effect of coir-pith-based compost (CPBC) with organics and inorganics was studied over a period of five years. Application of CPBC with pressmud (PM) and 100% recommended dose of fertilizer (RDF) produced significantly higher grain (3.75 t ha−1) and straw yield (7.60 t ha−1) of ragi crop and recorded significantly higher available N (257 kg ha−1), P (14.3 kg ha−1) and S (67.0 mg kg−1) in the soil. Whereas, available K (147 kg ha−1) and Ca [20.3 cmol(p+)kg−1] was found to be high in farmyard manure (FYM) with 100% RDF applied treatment over five years. The Mg availability [10.5 cmol(p+)kg−1] was high in CPBC with green manure and 100% RDF applied treatment. The Fe and Cu were high in CPBC with copper ore tailings (COT) and 100% RDF-treated plot, whereas CPBC with PM and 100% RDF applied treatment recorded high Zn availability.

Keywords

Coir pith-based compost, pressmud, green manure, farmyard manure, copper ore tailings, recommended dose of fertilizer, residual effect, ragi