TY - JOUR T1 - Measuring crop residue cover JF - Journal of Soil and Water Conservation SP - 341 LP - 343 VL - 36 IS - 6 AU - J. M. Laflen AU - M. Amemiya AU - E. A. Hintz Y1 - 1981/11/01 UR - http://www.jswconline.org/content/36/6/341.abstract N2 - The photographic, meterstick, and line-transect methods of measuring the percentage of land covered with crop residue were evaluated by comparing residue cover on 10 Iowa fields farmed with conservation tillage. Although the line-transect method overestimated crop residue by 6 to 10 percent, variability in measurements proved less than with the photograph and meterstick methods. The line-transect method is preferable for field use, particularly if technicians are carefully trained in its use and in self-calibration so that overestimation of crop residue can be avoided. ER -