Runoff and Nutrient Losses from Constructed Soils Amended with Compost

Table 3

Above-ground dry-mass yield (g m⁻²) of a bermudagrass, Cynodon dactylon L., and big bluestem, Andropogon gerardii, Vitman grass mix grown on soils amended with composted dairy manure (CDM) or composted municipal biosolids (CMB) using TxDOT specifications for stabilizing soils affected by highway construction. See Table 2 caption for description of treatments.

Treatment	Compost	Rate	1st harvest		2nd harvest
		(m^3 m^−3)	(g m^−2)		(g m^−2)
Control	NA	NA	35	c	58	c
CMT	CDM	0.125	56	bc	244	ab
CMT	CMB	0.125	103	abc	272	ab
CMT	CDM	0.25	42	bc	284	ab
CMT	CMB	0.25	113	abc	211	bc
ECC	CDM	0.50	184	a	215	bc
ECC	CMB	0.50	130	ab	382	a

^†Different letters in columns represent significant differences using Fisher’s LSD means separation test.