Automated Fertilizer Applicator for Potting Machines
Richard L. Parish, Roysell J. Constantin, William Lee Brown, D. Wayne Wells · Journal of Environmental Horticulture · 1986
An automatic fertilizer metering device was designed, built, and mounted on a nursery potting machine. The device senses the presence of a container under the fertilizer spout, and automatically deposits a metered charge of fertilizer into the planting hole in the medium in the container. Fertilizer rate is readily adjustable. Operation is fully automatic.