Effects of Fly Ash Application to Soil on Growth of Sorghum

토양중 석탄회(石炭灰) 시용이 수수의 생육에 미치는 영향

  • Kim, Jai-Joung (College of Agriculture, Chungbuk National University)
  • Published : 1995.12.30

Abstract

To investigate the utilization of fly ash in agriculture, sorghum [Sorghum bicolor(L.) Moench] was used as the test crop. Soil was treated in pot experiments with anthracite and bituminous fly ash at 5 levels of 0, 6, 12, 18, and 24%, respectively. Growth status in terms of plant height and the number of nodes was improved in the order of bituminous treatment > anthracite treatment > control. The increment of fly ash had a positive effects on plant growth in both anthracite and bituminous treatment. The ratio of the senescent leaves to the all leaves during the maturing period was higher in fly ash treatments than in the control. As increasing the fly ash treatment, the ratio of senescent leaves was increased. Total yield was higher in the order of bituminous treatment > anthracite treatment > control. Grain yield also was higher in fly ash treatment than in the control. Bituminous fly ash treatments were more favourable in grain yield than anthracite. The increment of up to 12% fly ash to soil increased grain yield in both anthracite and bituminous. Application of bituminous fly ash could be recommended due to the fact that high pH of soil is favorable for growth of sorghum.

석탄회의 농업적 활용 방안을 모색하기 위하여 포트에 수수를 재배하였다. 토양은 무연탄회와 유연탄회로 각각 0, 6, 12, 18, 24% 처리되었다. 생육시기중 초장과 줄기의 마디수는 무처리 보다 석탄회처리에서 그리고, 무연탄회보다 유연탄회처리에서 효과가 더 좋았다. 석탄회처리는 24%까지 수수의 생육에 좋은 영향을 미쳤다. 성숙기의 고엽화(枯葉化)율은 석탄회처리에서 현저히 심하였고 석탄회의 농도가 증가할수록 그 율이 증대되었다. 줄기와 잎을 포함한 전수확량은 무처리보다 석탄회처리에서 그리고, 무연탄회보다 유연탄회처리에서 더 높았다. 알곡수량은 무처리보다 석탄회처리에서 그리고, 무연탄회보다 유연탄회처리에서 효과가 더 좋았다. 일반적으로 석탄회처리는 12%까지 수량이 증가되었다. 수수 생육은 pH가 높은 토양에서 왕성하므로 유연탄회 처리는 권장될 수 있다.

Keywords