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Fig. 2. (A) Soil microbial biomass C, (B) total phospholipid fatty acids (PLFAs), and (C) nematode biomass C in the top 30-cm layer in December 2004 at the end of the field station trial. NT = no-tillage; ST = standard tillage; CC = continuous cropping; and F = fallow. Data are means ± SE. Means followed by the same letter are not significantly different at the P < 0.05 level. Uppercase letters compare treatments in the top 0- to 30-cm layer; lowercase letters compare treatments for each depth.
