Table 4.
Combined mortality of Palmer amaranth progenies following herbicide drift exposure in a wind tunnel studya.
| Population | Progeny | Nozzle | Herbicide drift | ||
|---|---|---|---|---|---|
| glyphosate | 2,4-D | dicamba | |||
| Mortality (%) | |||||
| Perkins | P0 | air inclusion | 67.5 | 11.3 | 18.8 |
| flat fan | 93.75 | 42.5 | 62.5 | ||
| P1 | air inclusion | 23.5 | 5 | 10.5 | |
| flat fan | † | 26.75 | 44.5 | ||
| Chase | P0 | air inclusion | 76.25 | 13.75 | 23.25 |
| flat fan | 96.25 | 61.25 | 61.25 | ||
| P1 | air inclusion | 100 | 12.5 | 2.75 | |
| flat fan | † | 21.25 | 55 | ||
aTotal of 80 plants per population*progeny*nozzle*herbicide*, with 20 plants per distance (1.0, 1.5, 2.0, and 2.5 m from the nozzle).
†Progenies were not established.