Effects of Fly Ash, Gypsum, and Shell on the Chemical Properties of Soil and Growth of Chinese Cabbage in Acidic Soils

산성토양에서 석탄회,석고,패각시용이 토양화학성과 배추의 생육에 미치는 영향

  • Ha, Ho-Sung (Dept.of Agricultural Chemistry,Gyeongsang National University) ;
  • Kang, Ui-Gum (National Yeongnam Agricultural Experiment Station, RDA.) ;
  • Lee, Hyub (Dept.of Agricultural Chemistry,Gyeongsang National University) ;
  • Lee, Yong-Bok (Dept.of Agricultural Chemistry,Gyeongsang National University)
  • 하호성 (경상대학교 농화학과) ;
  • 강위금 (농촌진흥청 영남농업시험장) ;
  • 이협 (경상대학교 농화학과) ;
  • 이용복 (경상대학교 농화학과)
  • Published : 1998.06.30

Abstract

In order to evaluate the utility of the bituminous coal fly ash, gypsum, oyster shell as soil amendments, acid sandy loam soil with low boron content were amended in the upper 15cm with amendments, and then chinese cabbage was cultivated in fall. Amendments treated were, in metric tons per hectare, i ) none(Check) ; ii) 80 fly ash(FA) ; iii) 4shell(SH) ; iv) 56 fly ash+24gypsum (FG) ; v) 40 fiy ash + 24 gypsum +0.8 shell(FGS). On the whole, amendments imoroved soil chemical properties and contents of N, P, K, Ca, and B in leaves. Among treatmens, FA prominently neutralized soil pH and increased available $P_2O_5$ ,B but decreased Fe contents in soils. FGS also affected the increment of exchangeable Ca, Mg, and available B. Yield response in fresh weight of chinese cabbage was in order of 85% for FGS>77% for FG>66% FA>5% for SH plants. Reducing sugar and vitamin-C contents of leaves depending on treatments showed the same tendencies as that in yields, whereas crude fiber opposite to theme. In particular, FA, FG, and FGS plants showed normal growth without boron deficiency symotoms which appeared in Check and SH plants.Taken together, FGS was an effective combination enable to maximize the utility of fly ash, gypsum, and shell as soil amemdments, especially in cabbage yield and quality.