Authors: VANDERPLOEG RR RINGE H MACHULLA G HERMSMEYER D

Citation: Rr. Vanderploeg et al., POSTWAR NITROGEN USE EFFICIENCY IN WEST-GERMAN AGRICULTURE AND GROUNDWATER QUALITY, Journal of environmental quality, 26(5), 1997, pp. 1203-1212

Authors: VANDERPLOEG RR RINGE H MACHULLA G

Citation: Rr. Vanderploeg et al., LATE FALL SITE-SPECIFIC SOIL NITRATE UPPER LIMITS FOR GROUNDWATER PROTECTION PURPOSES, Journal of environmental quality, 24(4), 1995, pp. 725-733

Authors: VANDERPLOEG RR MACHULLA G RINGE H MEINS C

Citation: Rr. Vanderploeg et al., UPPER LIMITS FOR SOIL NITRATE IN LATE FAL L AS FUNCTION OF SOIL PROPERTIES, CLIMATE AND SOIL USE - MODEL CONSIDERATIONS, Zeitschrift fur Pflanzenernahrung und Bodenkunde, 158(5), 1995, pp. 435-443

Authors: VANDERPLOEG RR MACHULLA G RINGE H

Citation: Rr. Vanderploeg et al., A MIXING-CELL MODEL FOR ESTIMATING NITRAT E SEEPAGE LOSSES FROM AGRICULTURAL SOILS IN WINTER, Zeitschrift fur Pflanzenernahrung und Bodenkunde, 158(4), 1995, pp. 365-373