Authors: WOLLENHAUPT NC WOLKOWSKI RP CLAYTON MK

Citation: Nc. Wollenhaupt et al., MAPPING SOIL TEST PHOSPHORUS AND POTASSIUM FOR VARIABLE-RATE FERTILIZER APPLICATION, Journal of production agriculture, 7(4), 1994, pp. 441-448

Authors: MOTAVALLI PP KELLING KA SYVERUD TD WOLKOWSKI RP

Citation: Pp. Motavalli et al., INTERACTION OF MANURE AND NITROGEN OR STARTER FERTILIZER IN NORTHERN CORN PRODUCTION, Journal of production agriculture, 6(2), 1993, pp. 191-194

Authors: BUNDY LG ANDRASKI TW WOLKOWSKI RP

Citation: Lg. Bundy et al., NITROGEN CREDITS IN SOYBEAN CORN CROP SEQUENCES ON 3 SOILS, Agronomy journal, 85(5), 1993, pp. 1061-1067