Field studies were conducted in Lebanon to investigate the effect of different durations (0–6 wk) of solarization alone on scarified dodder seeds, and solarization with/without chicken manure on non-scarified seeds at various soil depths (0–20 cm). For both scarified and non-scarified dodder seeds, the effect of solarization periods on percent total seed germination (PTSG) was consistent only at 0 depth. At this depth, most of the solarization effect on scarified dodder seeds occurred during the first 10 d, where the reduction in PTSG was 95%. Non-scarified dodder seeds required 6 wk of solarization alone for significant reduction (69%) in PTSG at 0 depth. Chicken manure reduced the period of solarization from 6 to 2 wk for significant PTSG reduction. However, reduction in PTSG for solarization alone and solarization with chicken manure were similar after 6 wk.