Table 3. Porosity (%) in wheel-track by treatment and depth (mean ± SD). p-values from two-way ANOVA for the main effect of treatment.

Depth (cm)	Winch-assist	Non winch-assist	ANOVA p-value
5	58.02±8.05	55.05±7.04	0.011*
15	51.79±9.30	47.84±8.71
25	42.17±9.56	39.26±7.74

p < 0.05
p < 0.01
p < 0.001