Effects of Lime-Treated Sewage Sludge Compost Application on Soil Chemical Properties and Soil Organic Matter

• Aoyama Masakazu

  Fac. Agric. Life Sci., Hirosaki Univ.

• Zhou Baoku

  Soil Fert. Inst., Heilongjiang Acad. Agric. Sci.

• Saitoh Masato

  Aomori Agric. Exp. Stn.

• Yamaguchi Norihiko

  Aomori Agric. Exp. Stn.

Bibliographic Information

Other Title

• 畑地への石灰系下水汚泥コンポストの施用が土壌の化学性と有機物の性状に及ぼす影響
• ハタチ エ ノ セッカイケイ ゲスイ オデイ コンポスト ノ シヨウ ガ ドジョウ ノ カガクセイ ト ユウキブツ ノ セイジョウ ニ オヨボス エイキョウ

Abstract

The effects of the application of lime-treated sewage sludge compost on soil chemical properties and soil organic matter (OM) were investigated using soils receiving lime-treated sewage sludge compost for four years at the rates of O, 20, 40 and 60 Mg ha^<-1> year^<-1>. The soils were subjected to chemical analyses and humus characterization, and were separated into four fractions of water-stable aggregates (>1000, 250-1000, 53-250, <53 μm) by slaking of air-dried soil followed by wet sieving. Particulate (>53 μm) and mineralassociated OM (<53 μm) were separated from water-stable aggregates larger than 53 μm by sieving following mechanical dispersion. The application of sewage sludge compost increased significantly the amount of exchangeable Ca^<2+>, and thus resulted in a considerable increase in the soil pH. It also increased signlficantly the amount of soil OM and induced changes in soluble-humus composition. With an increasing rate of compost application, the proportion of the sodium pyrophosphate (NaPP) -soluble fraction increased, while that of the NaOH-soluble fraction decreased. The analysis of humic acid (HA) showed that the application of sewage sludge compost did not affect significantly the humification degree or molecular size distribution of NaPP-soluble HA whereas it induced a significant decrease in the degree of humification and an accumulation of high molecular weight components of NaOH-soluble HA. The OM derived from the applied compost accumulated preferentially in water-stable macroaggregates as particulate OM, but had little effect on the formation of waterstable macroaggregates.

Journal

• Japanese Journal of Soil Science and Plant Nutrition

  Japanese Journal of Soil Science and Plant Nutrition 74 (6), 749-757, 2003

  Japanese Society of Soil Science and Plant Nutrition

Keywords

• humic acid
• humus composition
• macroaggregates
• sewage sludge compost
• soil organic matter

Details

• CRID: 1390001206557798272
• NII Article ID: 110001746767
• NII Book ID: AN00195767
• DOI: 10.20710/dojo.74.6_749
• ISSN: 24240583
• ISSN: 00290610
• NDL BIB ID: 6785730
• Web Site: https://agriknowledge.affrc.go.jp/RN/2030682313
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I6785730
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed