The Effect of Earthworm (Lumbricus terrestris L.) Population Density and Soil Water Content Interactions on Nitrous Oxide Emissions from Agricultural Soils

Table 2

Mean initial and final earthworm biomass in the low, medium and high earthworm densities according to 𝜃_g (%) treatment.

	Density Treatment Biomass (g)
𝜃g (%)	Low^§	Medium	High
15 Initial	40.88 a^†	86.97 a	130.55 abc
15 Final	50.92 a	83.85 a	121.48 abc
25 Initial	43.08 a	86.97 a	125.85 abc
25 Final	52.19 a	101.95 b	150.85 c
35 Initial	47.20 a	103.60 b	145.63 ac
35 Final	89.94 b	123.30 c	144.50 ac
45 Initial	33.28 c	70.29 a	103.90 b
45 Final	55.59 a	75.60 a	117.10 ab
SE	2.69	4.02	5.54
𝑃 value	<.0001	.0420	.0323

^†Within columns, means followed by the same letter are not significantly different according to Tukey-Kramer means adjustment (0.05).
^§Low, medium, and high refer to densities of earthworms per 0.033 m²: 10, 20, and 30, respectively.