Given the following representative soil log for a field: \table[[Soil Layer,Soil Texture,\table[[Depth],[(in)]],\table[[Thickness,],[ft]],\table[[AWHC,],[in/ft]]],[1,Sandy Loam,
0-12,1.0,1.20],[2,Loamy Sand,
12-18,0.5,1.13],[3,Silt Loam,
18-24,0.5,1.75],[4,Clay,
24-30,0.5,2.09]] If the effective rooting depth of the crop is 21 inches, and the MAD is
35%, what is the SMD just prior to irrigation? 1.03 inches 0.70 inches 0.77 inches 0.57 inches 0.88 inches