3.1 Chlorophyll fluorescence parameters
Redroot pigweed’s leachate affected chlorophyll fluorescence parameters of cucumber and wheat species differently (Table 2). Leachate treatment significantly increased the F0, Fm, Fv, NPQ, q0, qA, Rfd, and SV0 values in cucumber (p ≥0.01). The same treatment in wheat increased F0, NPQ, and SV0 and decreased ETR and Fv/Fm parameters significantly (p≥0.01).