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

Figure 1

The relationship between N₂O emissions, earthworm density per 0.033 m², and gravimetric soil water content (𝐏=.𝟎𝟒𝟓𝟕, SE = 4.07, 5.29, 6.10, and 4.52 for 15%, 25%, 35%, and 45%, resp.). Bars with same letter indicate no significant difference between treatments at 𝐏=.𝟎𝟓 according to Tukey-Kramer means adjustment.