Establishment of optimal barley straw biochar application conditions for rice cultivation in a paddy field

S. W. Kang, J. H. Park, S. H. Kim, D. C. Seo, Yong Sik Ok, J. S. Cho

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

This study was conducted to establish the optimal application conditions of barley straw biochar (BC) for rice cultivation and to determine the effects of combined application of BC and inorganic fertilizer (IF) on rice cultivation in a paddy field. Based on the characteristics of rice growth in pot-based experiments, the selected optimal application conditions of BC were application of 20 ton ha−1 at 14 days before rice transplanting. The effects of BC application on rice cultivation in a paddy field when using those conditions were then evaluated. Each treatment was separated by a control (Cn), IF, BC, and combined BC + IF treatments, respectively. The rice yields in the BC + IF treatment were 38.6, 21.7, and 24.5% greater than those in the Cn, IF, and BC treatments, respectively. In addition, yield components of rice were significantly improved in the BC + IF treatment relative to the other treatments. Following rice harvest, soil status was improved, showing greater soil aggregation stability, decreased bulk density, and increased porosity in the BC-treated areas compared to those in the Cn- and IF-treated areas. At the time of rice harvesting, soil chemical properties such as pH, EC, SOC, TN, Avail. P2O5, and CEC in the BC-treated areas were improved over those in other areas. The results of this study indicate that using BC as a soil amendment is effective at improving rice cultivation and can benefit the soil environment.

Original languageEnglish
Pages (from-to)1793-1803
Number of pages11
JournalEnvironmental geochemistry and health
Volume41
Issue number4
DOIs
Publication statusPublished - 2019 Aug 1

Keywords

  • Barley straw biochar
  • Black carbon
  • Charcoal
  • Rice cultivation
  • Soil environment

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Chemistry
  • Water Science and Technology
  • Environmental Science(all)
  • Geochemistry and Petrology

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