Fig. 3 Nitrogen leached from filtration units after each of 11 incubation periods and average daily temperature during each incubation period. Net mineralized N data are the mean of duplicate soil samples from each of three field replicates of continuous corn (CC), corn–soybean (CS), and corn–soybean–wheat/alfalfa–alfalfa (CSWA) rotations managed at zero N (0N), low N (LN), or high N (HN) fertilization incubated at field soil temperature