Influence of Continious Application of Gypsum, Popped Rice Hull, and Zeolite on Soil Aggregation of Reclaimed Sandy Loam Soils

석고, 팽화왕겨 및 제오라이트 연속시용이 간척지 세사양토의 입단화에 미치는 영향

  • Baek, Seung-Hwa (Department of Biofood Science and Biotechnology, Chungbuk Provincial University of Science & Technology) ;
  • Kim, Jae-Young (Department of Food Environmental and Science, College of Life Science and Natural Resources, Wonkwang University) ;
  • Lee, Sang-Uk (Department of Food Environmental and Science, College of Life Science and Natural Resources, Wonkwang University) ;
  • Kim, Seong-Jo (Department of Food Environmental and Science, College of Life Science and Natural Resources, Wonkwang University)
  • 백승화 (충북도립대학 바이오식품생명과학과) ;
  • 김재영 (원광대학교 식품환경학과) ;
  • 이상욱 (원광대학교 식품환경학과) ;
  • 김성조 (원광대학교 식품환경학과)
  • Received : 2010.10.22
  • Accepted : 2010.10.25
  • Published : 2010.10.30


We investigated influence of continious application of gypsum (G: $CaSO_4{\cdot}2H_2O$), popped rice hulls (H) and zeolite (Z) on soil aggregation of reclaimed sandy loam soils. The application rates amended to fine sandy loam from reclaimed soils at Kyehwado were varied as follows:1550 (G1), 3100 (G2), 6200 (G3), 1000 (H1), 2000 (H2), 3000 (H3), and 200 (HZ1), 400 (HZ2) and 800 (HZ3) added to 1500(H) kg $10a^{-1}$, respectively. Soil aggregates were analyzed for 60, 90 and 120 days after treatments (DAT). At 60 DAT, The amount of aggregate from soil samples treated with gypsum was slightly increased with G1 while the aggregation was decreased by 4.66% for G3 for soil aggregates than thar of control. The treatments of H or HZ were effective in soil aggregation. The effect of treatment was in the order of H > HZ > G. At 90 DAT, increasing amount of gypsum attributed to decrease in soil aggregates. Therefore, we could conclude that suitable amounts of gypsum for soil aggregation in fine sandy loam might be 1550 kg $10a^{-1}$ or less. H1 increased aggregation by 7% for aggregate size between 1.0 and 2.0 mm. HZ1 was most effective in aggregation by 52.78% among the treatments while H2 and HZ3 51.50% and 48.51% at 120 DAT, respectively. As a result, we found that the effect of the treatment for soil amendments was in order of H > HZ > G.


Supported by : 원광대학교


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