Response of Chinese Cabbage, Radish and Soybean Exposed to Sprinkle and Mist of Simulated Acid Rain

인공산성(人工酸性)비의 철수(撤水) 및 분무(噴霧)가 배추, 무, 콩에 미치는 영향(影響)

  • Park, Suen-Do (Kyongpook Provincial Rural Dvelopment Administration) ;
  • Lee, Suk-Soon (Department of Agronpmy, College of Natural Resources, Yeungnam University) ;
  • Kim, Bok-Jin (Department of Agronpmy, College of Natural Resources, Yeungnam University)
  • 박선도 (경상북도 농촌진흥원) ;
  • 이석순 (영남대학교 자연자원대학 농학과) ;
  • 김복진 (영남대학교 자연자원대학 농학과)
  • Published : 1996.09.30

Abstract

A green house experiment was conducted to investigate the growth of Chinese cabbage, radish and soybean and change in the chemical properties of the soil after the 10mm application of the simulated acid rain(SAR) of pH 2.7 in the form of sprinkle and mist. It was applied 30 times for Chinese cabbage and radish and 62 times for soybean at the two-day intervals. The results obtained are summarized as follows: 1. Visual damages caused by SAR were dark-brown or red brown leaf spots in Chinese cabbage, and dark-brown and wrinkled leaf margins in radish and soybean. 2. The degree of visual damages became severer as the number of SAR applications increased and it was severer with mist than with sprinkle of SAR. 3. Chlorophyll content was reduced by SAR, but it was not affected by the form of SAR application(sprinkle or mist) in all crops, although it was slightly lower with mist than with sprinkle of SAR. 4. Fresh weight of Chinese cabbage heads and radish roots and grain yield of soybean were reduced by SAR, and were not affected by the form of SAR application. 5. Contents of K, Ca, and Mg in leaves were reduced, while S content increased by SAR in all crops. The forms of SAR application did not affect contents of mineral nutrients in all crops. 6. SAR decreased soil pH and the contents Ca, Mg, and K of soil, while increased $SO_4$ content. However, the contents of soil organic matter, N, and P were not affected by SAR. Forms of SAR application did not affect soil chemical properties either.

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