Ap. Vandeventer et al., USING THEMATIC MAPPER DATA TO IDENTIFY CONTRASTING SOIL PLAINS AND TILLAGE PRACTICES, Photogrammetric engineering and remote sensing, 63(1), 1997, pp. 87-93
Landsat-5 Thematic Mapper (TM) data from 11 May 1990 for Seneca County
, Ohio were used to develop TM-based probability models far classifyin
g agricultural management practices and soil properties. Logistic regr
ession techniques were used to relate field data for 27 fields to TM b
ands and indices. Field data, including tillage and drainage practices
, soil plain, and soil texture, were collected from 1988 to 1990. Both
soil plain and tillage logistic regression models classified 89 perce
nt of the fields correctly. Simple ratio and normalized differences of
TM bands 5 and 7 proved most useful for classifying tillage practices
. TM bands 1, 2, 3, and 4 were found useful for identifying soil plain
. Spectral differences were attributed to soil color differences betwe
en lake and till plain soils and surface residue differences between c
onservation and conventional tillage. The developed models were tested
with independent data from 15 additional fields and classified 88 per
cent of the soil plain and 93 percent of the tillage attributes correc
tly. Using TM data to identify drainage practices, organic matter cont
ent, and soil texture was generally inadequate for scientific purposes
.