A TOOL FOR ESTIMATING BEST MANAGEMENT PRACTICE EFFECTIVENESS FOR PHOSPHORUS POLLUTION CONTROL
W. J. Gburek, M. W. Gitau, A. R. Jarrett
págs. 1-9
TRENDS IN PHOSPHORUS FERTILITY OF NEW YORK AGRICULTURAL LAND
Q. M. Ketterings
págs. 10-20
EVALUATION OF SOME PHOSPHORUS INDEX CRITERIA IN CULTIVATED AGRICULTURE IN CLAY SOIL
H. A. Torbert, K. N. Potter, R. D. Harmel
págs. 21-28
FIELD EVALUATION OF THREE PHOSPHORUS INDICES ON NEW APPLICATION STIES IN TEXAS
R. D. Harmel, B. E. Haggard, H. A. Torbert, P. B. DeLaune
págs. 29-41
SOIL ORGANIC CARBON VARIABILITY AND SAMPLING OPTIMIZATION IN MONTANA DRYLAND WHEAT FIELDS
R. S. Bricklemyer
págs. 42-50
MAPPING SURFACE SOIL ORGANIC CARBON FOR CROP FIELDS WITH REMOTE SENSING
D. E. Kissel, F. Chen
págs. 51-57
INFLUENCE OF SUMMER COVER CROPS ON CONSERVATION OF SOIL WATER AND NUTRIENTS IN A SUBTROPICAL AREA
Q. Wang
págs. 58-62
Carmen C. Jiménez Mendoza
págs. 63-67