Bioactive Compounds in Agricultural Soils

Introduction. Biologically Active Substances.- 2. Free, Bounded and Included in Humic Acids Amino Acids from Cropping Systems. Thermal properties of Humic Acids from Cropping systems.- 3. Conversions and Pathways of Organic Carbon and Organic Nitrogen in Soils.- 4. Free Sulfuric Amino Acids and the Activity of Rhodanese in Soils under Continuous Cropping of Rye and Crop Rotation.- 5. Amino Acids, Indole -3-Acetic Acid, Stable and Transient Radicals, and Properties of Humic and Fulvic Acids as Affected by Tillage System.- 6. Leaching Kinetics of Organic and Inorganic Compounds in Tilled and Orchard Soils.- 7. Phytohormone in Peats, Sapropels and Peat Substrates.- 8. Auxin, One Major Plant Hormone, in Soil.- 9. Transformations of Organic Matter in Soils Under Shelterbelts of Different Age in Agricultural Landscape.- 10. Impact of Long-term Agricultural Management and Native Forest Ecosystem on the Chemical and Biochemical Properties of Stagnic Albeluvisols' Organic Matter.- 11. Cranberry - The Plant Growing on Organic Soils with Broad Spectrum of Pharmaceutical and Medical Utilization.- 12. The Importance of Horticultural Growing Media and Biochemical, Chemical and Physical Processes.