Furrow Guidance System for Vegetable Production. Developed by Professor John Wilhoit at the University of Kentucky. Please see a YouTube video of it in use by searching under John Wilhoit and furrow guidance. The furrow digger is on the front right wheel and comes down to orient the system in the field. We’ve used the unit to plant potatoes, beets and broccoli very successfully. It can be used for other seed crops. Original price was 00. We’re selling because we want to be closer to our grandson. The farmer just has to be on the unit at the end of each row to turn it around. The unit carries harvest containers for you. It cultivates close to the row where your plants are growing and controls weeds without using herbicides. During harvesting broccoli you can cut broccoli and place it in containers carried by the system as it moves along the row automatically.