Quantitative and qualitative changes of humus in whole soils and their particle size fractions as influenced by different levels of compost application

Abstract

Effect of long-term application (ca. 30 years) of compost at different levels on humus composition of whole soils and their particle size fractions in a field subjected mainly to double cropping (barley and paddy rice) was investigated. Soil samples were collected from three plots of different types of management: (a) F plot, only chemical fertilizers… (More)

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