Fig. 1. Interaction effects of residue removal and N rate on available P across four Illinois locations after five years of treatment. The bar indicates the size of the least significant difference (LSD) among treatment means at alpha = 0.05.
Fig. 1. Interaction effects of residue removal and N rate on available P across four Illinoislocations after five years of treatment. The bar indicates the size of the least significant difference(LSD) among treatment means at alpha = 0.05.