Fig. 2
From: Biodynamic compost effects on soil parameters in a 27-year long-term field experiment
a Mean catabolic response for sugars (L-arabinose (Ara), D-galactose (Gal), D-glucose (Glc), and D-fructose (Fru)), sugar alcohol sorbitol (Sor), phenolic organic acid protocatechuic acid (ProCa), carboxylic acids (malic acid (MA) and citric acid (CA)), and distilled water (≈ basal respiration), in experimental plots with four FYM treatments over 27 years. Long-term field experiment Wiesengut. Mean ± standard deviation. Different letters on top of the bars represent significant differences from other treatments (Tukey’s test) b Catabolic response for amino acids (γ-aminobutyric acid (GABA), L-serine (Ser), L-alanine (Ala), L-cysteine (Cys), L-glutamine (GluN), and L-leucine (Leu)), and amino sugars (N-acetyl-glucosamine (NAG), D-glucosamine (GlcN), and D-galactosamine (GalN)) in experimental plots with four FYM treatments over 27 years. Long-term field experiment Wiesengut. Mean ± standard deviation, t = 4, r = 6, n = 24. Different letters on top of the bars represent significant differences from other treatments (Tukey’s test)