Burial depths favor Italian ryegrass persistence in the soil seed bank

Italian ryegrass (Lolium multiflorum Lam.) is a weed broadly found in fields cultivated with wheat and barley crops. Seed inputs into the soil before harvesting winter crops increase seed bank, ensuring survival. This study evaluated persistence of seeds subjected to burial depths over time. Experiments were carried out field for two years randomized block experimental design four repetitions. Dormant harvested from mother-plants put nylon bags containing soil. Previously, viability was 1 % tetrazolium solution, 50 viable by repetition buried at 0.5, 5.0, 10, 20 cm depths. percentage deteriorated remaining seeds, non-dormant abnormal seedlings, non-viable dormant 0, 30, 60, 90, 180, 360, 540, 720 days after (DAB). increased 10 depth compared layers up 5 cm. Moreover, showed lower (10 lower) 0.5 360 DAB. For higher 90 DAB, regardless depth. Dormancy breakage occurred until 180 more rapidly At 540 than 95 unviable, demonstrating short bank.