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AgricultureAgronomyPlant SciencesPlant NutritionSoil ChemistrySoil Organic MatterComposting SystemsLegume-grass InteractionsComparative EvaluationCompost As Soil AmendmentComposting ProcessesHumus ChemistryHumus CompositionOrganic Waste CompostingPeat Humification
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Humic substances in soil, sediment and water
C. Calmon · Reactive Polymers Ion Exchangers Sorbents · 1986 · 1.2K citations
Physiological effects of humic substances on higher plants
Serenella Nardi, Diego Pizzeghello, Adele Muscolo et al. · Soil Biology and Biochemistry · 2002 · 1.1K citations
Information Provided on Humic Substances by E4/E6 Ratios
Y. Chen, N. Senesi, M. Schnitzer · Soil Science Society of America Journal · 1977 · 1.1K citations