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Copy numbers of 16S rRNA gene of total bacteria (A) and Lactobacillus (B), 26S rRNA gene of yeasts (C), and 18S rRNA gene of fungi (D). Purple prairie clover was ensiled without (control) or with polyethylene glycol (PPC-p) in terminal silage (day 0) and after 7 and 14 days of aerobic exposure. *, P < 0.05; **, P < 0.01.
