Reports by Daniel Olk

	Advanced Solid-State 13C NMR Analysis of Organic Matter in a Nebraska Corn Soil Amended with Cattle Manure.
	Aerobic Decomposition of Crop Residues Improves N Availability and Grain Yield for Three Rice Soils of the Mekong Delta, Vietnam: A Screenhouse Study.
	Analysis of Phosphorus in Soil Humic Acid Fractions by Enzymatic Hydrolysis and Ultraviolet Irradiation.
	Some Contributions of Resistant Compounds to Soil Organic Matter Formation and Nutrient Cycling.