Sediment, Nutrient, and Bacterial Runoff from Biosolids and Mineral Fertilizer Applied to a Mixed Cool- and Native Warm-Season Grassland in the Ozark Mountains

Table 5

Untransformed treatment means for all analyzed mineral fertilizer nutrients in runoff from Experiment 2 simulated rainfall plots. Note: values have been extrapolated to a kg ha⁻¹ basis.

Contaminant	C^†	MFF	MFW
	Kg ha^−1
TSS	15.6^a‡	17.6^a	5.7^a
TKN	1.1^b	5.9^ab	16.7^a
DTKN	0.33^b	5.4^ab	16.4^a
NH4-N	0.067^b	5.4^ab	15.7^a
DNH4-N	0.067^b	5.4^ab	15.6^a
NO3-N	0.033^b	0.2^ab	0.4^a
TP	0.10^b	5.4^ab	18.9^a
DP§	0.07^a	1.5^a	13.9^a

^†C: untreated control; MFF: fertilizer, filtered by a 1.0 m grass strip; MFW: fertilizer applied to whole plot.
‡Values within a row followed by different letters are significantly different according to a protected LSD test (𝛼=0.05).
§Three DP samples were lost due to a laboratory error. The consequent loss of statistical power may have contributed to a failed F-test (𝑃=0.147) for the protected LSD procedure.