Aanderud, Z.T., C.S. Bledsoe, and J.H. Richards. 2003. Contribution of relative growth rate to root foraging. Oecologia 136:424-430. Adams, T.E. 1976. Brush Management-The Ball and Chain. Berkeley, CA, USA: California Division of Agricultural Sciences Leaflet 2920. 7 pgs. Adams, T.E. 1976.