A disc-opener implement for use with an agricultural implement includes a disc configured to form a trench in a surface of a field and a scraper adjacent to the disc. The disc-opener implement also includes a knife that is configured to form a furrow next to or into a sidewall of the trench, wherein the knife comprises a leading edge, and a portion of the leading edge is aligned with a trailing edge of the scraper along a lateral axis of the disc-opener implement.