Table 4: Minimum threshold water potential for germination of weed species grouped by intervals of germination sensitivity to water potential.

Sensitivity interval (MPa)  Minimum threshold  (MPa) Common name Scientific name Reference B (−0.1 to −0.5)  −0.10 Common cocklebur Xanthium strumarium L. [6]  −0.20 Redroot pigweed Amaranthus retroflexus L. [38] C (−0.5 to −1.0)  −0.50 Common groundsel Senecio vulgaris L. [39]  −0.50 Large crabgrass Digitaria sanguinalis (L.) Scop. [40]  −0.60 Wild oat Avena fatua L. [41]  −0.64 Common lambsquarters Chenopodium album L. [42]  −0.64 Velvetleaf Abutilon theophrasti Medik. [43]  −0.69 Yellow foxtail Setaria glauca (L.) Beauv. [5]  −0.70 Green foxtail Setaria viridis (L.) Beauv. [5]  −0.80 Goosegrass Eleusine indica (L.) Gaertn. [44]  −0.80 Common ragweed Ambrosia artemisiifolia L. [45]  −0.83 Large crabgrass Digitaria sanguinalis (L.) Scop. [5] D (−1.0 to −1.5)  −1.13 Common chickweed Stellaria media (L.) Vill. [46]  −1.15 Rigid ryegrass Lolium rigidum Gaudin [47]  −1.20 Wild oat Avena fatua L. [48]  −1.21 Goosegrass Eleusine indica (L.) Gaertn. [5]  −1.50 Wild oat Avena fatua L. [49]  −1.50 Perennial ryegrass Lolium perenne L. [50]  −1.53 Blackgrass Alopecurus myosuroides Huds. [51]