PT  - JOURNAL ARTICLE
AU  - Laflen, J. M.
AU  - Amemiya, M.
AU  - Hintz, E. A.
TI  - Measuring crop residue cover
DP  - 1981 Nov 01
TA  - Journal of Soil and Water Conservation
PG  - 341--343
VI  - 36
IP  - 6
4099  - http://www.jswconline.org/content/36/6/341.short
4100  - http://www.jswconline.org/content/36/6/341.full
AB  - 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.