Fourier transform infrared and fluorescence spectral features of organic matter in conventional and organic dairy manure.

摘要: Organic dairy production has exhibited potential for growth in the United States sector. However, little information is available on whether there any difference manure composition and quality between organic (OD) conventional (CD) even though are important parameters with respect to availability, utilization, cycling of nutrients environmental impact evaluation. We comparatively characterized whole water-extracted materials 15 OD seven CD samples by Fourier transform infrared (FT-IR) fluorescence spectroscopies. features matter varied mainly 1650 1550 cm range, reflecting presence different N compounds these samples. Fluorescence data revealed five fluorophore components present from manures. found no clearly distinct value ranges water-extractable two types C contents FT-IR spectral features. based average values, we observed general pattern differences effect farming composition: contained less soluble dry weight basis but more hydrophobic aliphatic groups manure. The stable humic- lignin-related amino/protein N-related their spectroscopic These might be attributed forage feedstuffs management protein additives feedstuffs. Information this work may useful aiding farmers making decisions.