Fig. 4. Observed and Case II simulated monthly NO3–N losses during 1990–1993 at Lamberton, MN, for (a) continuous corn (CC) and (b) corn–soybean (CS).
Fig. 4. Observed and Case II simulated monthly NO3–N losses during 1990–1993 at Lamberton, MN, for (a) continuous corn (CC) and (b) corn–soybean (CS).