TY - RPRT TI - The integration of geophysical and enhanced Moderate Resolution Imaging Spectroradiometer Normalized Difference Vegetation Index data into a rule-based, piecewise regression-tree model to estimate cheatgrass beginning of spring growth AU - Stephen P. Boyte AU - Bruce K. Wylie AU - Donald J. Major AU - Jesslyn F. Brown PY - 2013 DO - 10.1080/17538947.2013.860196 UR - https://pubs.usgs.gov/publication/70140943 ID - 70140943 ER -