Disc furrow opener and method for single pass placement of seed and fertilizer

摘要

A disc furrow opener and method for single pass placement of seed and fertilizer in agricultural planting uses a scraper to both scrape the disc and form a seed shelf in the furrow formed thereby and delivers seed onto the seed shelf and fertilizer into a bottom portion of the open furrow formed by the disc below the seed shelf. Placement of seed and fertilizer is achievable in a single pass over the area to be seeded without need for a second opening implement rearward of the disc and without being limited to the use of liquid fertilizer.