"We've seen up to 40% better seed placement, spacing, depth, and emergence with our seed tube than with any conventional curved tube on the market," says LaVern Schmidt of Montezuma Welding and Manufacturing about the company's unique add-on seed tube that fits most row crop planters.

The 9-in. add-on tube is fitted with a 1/4-in. thick half moon disc on front that runs in the bottom of the furrow, opening and shaping the seed trench to improve seed placement and eliminate bounce. On a Deere planter, the straight-down tube drops seed a full 2 7/8 in. ahead of where the original curved tube would drop it. Because seed falls into the furrow right behind the half-moon disc, which also scrapes against the disc openers, there's no chance for soil to fall back in ahead of the seed.

The tube and disc are hard-surfaced with tungsten. The tube, which is held in place by a threaded rod, is adjustable vertically as much as 2 in. to compensate for disc wear. Fits all Deere, Kinze, Yetter, White, and Great Plains planters.