The Effects of Biochar from Rice Husk and <i>Chromolaena odorata</i> on the Soil Properties and Tomato Growth in Cambodia

DOI Open Access
  • LORN Vicheka
    United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology
  • TANAKA Haruo
    Institute of Agriculture, Tokyo University of Agriculture and Technology
  • BELLINGRATH-KIMURA Sonoko Dorothea
    Institute of Land Use Systems, Leibniz Centre for Agricultural Landscape Research (ZALF)
  • OIKAWA Yosei
    Institute of Agriculture, Tokyo University of Agriculture and Technology

Abstract

<p>Supplies of soil amendments and fertilizers are major constraints to increasing crop productivity in rural Cambodia. In order to test and compare potential soil amendments, we examined the effects of biochar from rice (Oryza sativa L.) husk and Siam weed (Chromolaena odorata), with and without fertilizer on plant growth and soil properties. Tomato (Solanum lycopersicum L.) was grown on loamy sand (clay-silt-sand = 9-10-81), with a pH of 7.7, and exposed to the following seven treatments: no input (control), rice husk biochar (RB), rice husk biochar + compost (RBcom), rice husk biochar + NPK (15:15:15) fertilizer (RBchem), C. odorata biochar (CB), C. odorata biochar + compost (CBcom), and C. odorata biochar + NPK (CBchem). The results showed that only CBchem provided significantly greater fresh root weight (+58%) and total fresh biomass (+166%) than control. RB, RBchem, and RBcom did not increase all the parameters on plant growth and soil properties. The soil pH of CB (7.8), CBcom (7.9), and CBchem (7.7) were significantly enhanced as compared to control (7.3). Compared to CBchem, CBcom caused greater increases in soil pH, EC, available P, available N, exchangeable Ca, and exchangeable K, although those increases were not statistically significant. Hence, C. odorata biochar was considered as a nutrient-rich amendment that had a high amount of N, P, Ca, Mg, and K after the charring process, and contributed to improve plant growth.</p>

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Details 詳細情報について

  • CRID
    1390001205297068416
  • NII Article ID
    130006900216
  • DOI
    10.11248/jsta.61.99
  • ISSN
    18828469
    18828450
  • Text Lang
    en
  • Data Source
    • JaLC
    • CiNii Articles
    • KAKEN
  • Abstract License Flag
    Disallowed

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