Laserfiche WebLink
~r <br />~. <br />M <br />1 <br />A <br />N <br />'! <br />i <br />t <br />g <br />A <br />A <br />24 <br />Table 8. EY.rosica~ control practice (P) values and slope length limits far <br />oontourisg (adapted fzrmm Wi~~;er aryl Smith, 1978). length may be <br />irr-roaes~rt 25 percent if residue cover regularly exceeds 50 peroem. <br />I~IYl Slope (peroent) P Value Mai iimim Tp*~+h (ft) <br />1-2 0.6 400 <br />3-5 0.5 300 <br />6-8 0.5 200 <br />9-12 0.6 120 <br />13-16 0.7 80 <br />17-20 0.8 60 <br />21-25 0.9 50 <br />