Weed emergence and seedbank after three years of repetitive shallow cultivation in a muck soil field

Frequent cultivation is often used to control weeds in crops such as lettuce. The efficacy of this technique on weed populations has been evaluated, but the effect emergence and seedbanks less documented. Studies mineral soil indicate that disturbance can increase both seed persistence depending where seeds are redistributed profile. Evaluations done muck scarce. This study evaluated two four repetitive shallow (3.4 7.1 cm deep) cultivations seedbank soil. Cultivation treatments (0, 2, 4 using a inter-row rototiller) were lettuce plots from 2017 2019. Weed density was by species before each date after crop harvest. Viable collecting samples growing season placing them greenhouse flats. Statistical analyses based mixed models. Results showed modified patterns did not reduce total during subsequent years or viable seedbanks. After seasons without inputs, reduced 46.6% 31.7% regardless treatment. However, very abundant common purslane (Portulaca oleracea) remained high.