Fig. 3. Soil test K following fall harvest, as influenced by N and K fertilization rate and year. (a) 0 kg N ha-1, (b) 112 kg N ha-1, and (c) 224 kg N ha-1. Error bars are standard errors of two sites and four replicates.
Fig. 3. Soil test K following fall harvest, as influenced by N and K fertilization rate and year. (a) 0 kg N ha-1, (b) 112 kg N ha-1, and (c) 224 kg N ha-1. Error bars are standard errors of two sites and four replicates.