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w4ban <br /> mmdP— <br /> inasnouncxnioi�, <br /> Table 5. Analysis of Variance for Biomass, Percent Herbage Cover and Bare Ground Over <br /> Four Years and at Two Topsoil Depths Within Each Year. <br /> Biomass <br /> Mean F Significance <br /> Source D.F. Square Value of F. <br /> Year (Y) 3 54347 ll.6 .001 <br /> Depth (D) 1 41547 25.9 .001 <br /> Y x D 3 14225 4.0 .016 <br /> Error 32 3578 <br /> Cover <br /> Mean F Significance <br /> Source D.F. Square Value of F. <br /> Year (Y) 3 1387.1 10.3 .001 <br /> Depth (D) 1 960.4 7.1 .012 <br /> Y x D 3 30.3 0.2 NS <br /> Error 32 134.7 <br /> Bareground <br /> Mean F Significance <br /> Source D.F. Square Value of F. <br /> Year (Y) 3 81.5 1.84 .159 <br /> Depth (D) 1 160.0 3.62 .066 <br /> Y x D 3 4.8 0.11 NS <br /> Error 32 44.1 <br /> 12 <br />