title: Characteristics of boron accumulation by fly ash application in paddy soil.
abstract: Fly ash has a high content of plant available silicate which is strongly needed for rice cultivation in Korea. One concern for plants grown on soils amended with fly ash is boron (B) toxicity because most of the fresh fly ash contains considerable B. This study was conducted in paddy soil to determine B uptake by rice and characteristics of B accumulation in soil after fly ash application (0, 40, 80, and 120 Mg fly ash ha(-1)). In all fly ash treatments, B content in rice leaves and available B in soil at all growing stage were higher than those of control, but were not exceeded a toxicity levels. Boron occluded in amorphous Fe and Al oxides comprised ca. 20-39% of total B and was not affected by fly ash application. Most of the B was accumulated by fly ash application as a residual B which is plant-unavailable form, comprised >60% of the total B in soil. Thus, fly ash can be a good soil amendment for rice production without B toxicity.
authors.affiliation: Division of Applied Life Science, Gyeongsang National University, Kaswa-dong, Jinju 660-701, Republic of Korea.
authors.forename: Seul Bi
authors.initials: SB
authors.lastname: Lee
authors.forename: Yong Bok
authors.initials: YB
authors.lastname: Lee
authors.forename: Chang Hoon
authors.initials: CH
authors.lastname: Lee
authors.forename: Chang Oh
authors.initials: CO
authors.lastname: Hong
authors.forename: Pil Joo
authors.initials: PJ
authors.lastname: Kim
authors.forename: Chan
authors.initials: C
authors.lastname: Yu
mesh_terms: D001895:Boron / Q000032:analysis* / Q000302:isolation & purification; D002244:Carbon; D060729:Coal Ash; D005308:Fertilizers; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste; D007723:Korea; D009930:Organic Chemicals / Q000032:analysis; D012275:Oryza / Q000254:growth & development*; D052638:Particulate Matter; D012987:Soil; D012989:Soil Pollutants / Q000032:analysis
chemical_list: D060729:Coal Ash; D005308:Fertilizers; D007220:Industrial Waste; D009930:Organic Chemicals; D052638:Particulate Matter; D012987:Soil; D012989:Soil Pollutants; D002244:Carbon; D001895:Boron