Growth of Spinach by Using Nickel Electrodes in a Culture Solution with Urea

• TAMAKI Masahiko

  <I>School of Bioresources, Hiroshima Prefectural University</I>

• HOTEHAMA Chie

  <I>School of Bioresources, Hiroshima Prefectural University</I>

• YOSHIDA Shigetaka

  <I>Graduate School of Bioagricultural Science, Nagoya University</I>

Abstract

Nickel (Ni) electrodes were placed in a culture solution to release Ni, a component of urease. The growth of spinach (Spinacia oleracea L.) cultured in nutrient solutions containing urea (U solution) with Ni electrodes was superior to that cultured in nutrient solutions without electrodes; the best growth was observed when the nutrient concentration was 1 unit and a 3 μA current was applied. Urease activity of spinach leaves was higher in the U solution with Ni electrodes, and the activity that occurred 4 weeks after planting was the highest when 3 μA current was applied to Ni electrodes. The application of electric current to Ni electrodes in the U solution increased the urease activity and promoted the conversion of urea to ammonia, thereby promoting the growth of spinach.

Journal

• Environment Control in Biology

  Environment Control in Biology 43 (4), 295-298, 2005

  Japanese Society of Agricultural, Biological and Environmental Engineers and Scientists

Keywords

• hydroponics
• urease activity

Details

• CRID: 1390001205260919168
• NII Article ID: 130003856958
• NII Article ID: 10018078198
• NII Book ID: AA12029220
• DOI: 10.2525/ecb.43.295
• ISSN: 18830986
• ISSN: 1880554X
• NDL BIB ID: 7744880
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7744880
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed