Figure 4. Superior row; comparison of observed Descurainia sophia's densities in the minimum-tillage system versus predicted densities from models fitted to the data from the no-tillage system; inferior row; comparison of observed Descurainia sophia's densities in the no-tillage system versus predictions from models fitted to the data from the minimum tillage system.

a) Model 17, b) model 18, c) model 22 and d) model 23. All models are from Table S1.