In a no-till system, mulching the soil is a fundamental part of weed management, as it alters the weed community and also affects the dynamics of herbicides. Therefore, the interference of the herbicide Diclosulam on the germination and growth of crabgrass plants (Digitaria nuda) under different amounts and types of mulch (Avena strigosa, Lolium multiflorium, Brachiaria ruziziensis, Secale cereale, Lupinus albus, Triticum spp. and X Triticosecale Wittmack) will be elucidated.