Liquid is streamed into the root zone for easier access by the plant to give your crops the edge they need in their early stages of development and to give you a big yield boost. Installation is quick and easy, and our Brackets are made to fit most major planter manufactures and models. Click on the links below to download installation instructions for a variety of planter manufactures and models. Fertilizer Brackets Our Dual Placement Fertilizer Brackets allow you to accurately and easily apply liquid fertilizer at planting time. Fertilizer where the plant needs it Instead of spraying on top of the ground, the Brackets position fertilizer for rapid uptake by the plant, 1.