This is pretty much what we've used here since 1954. David Bradley sold by Sears years ago. Still a lot of them out there for sale but have to be in the right spot at the right time. Many think they are worth their weight in gold. I've never paid over $100 and all have had an attachment or two. A non-runner can be repowered with a small 3 hp. Briggs engines. I've boughten more than several gas powered sidewalk edgers with Briggs engines for a replacement engine. HF engines bolt right up too. Mark rows out, then plant in those small furrows. Mark 2 rows on the first pass, then one shovel/sweep in a row for spacing. When all rows are marked, I'll trickle some stater fertilizer in the row, then run through them to stir it as little. A little extra work, but worth the effort. When it comes time to cultivate, you're dead nut on for spacing. Cleans up real nice. Still have to hoe in between plants. I plant row crops in 30" spaced rows. You could go with a 3 pt. cultivator but have to set up planting to match wheel spacing on the tractor. Most have to go 48" minimum on like a CUT, and that's lots of wasted space.
I have a set of hillers on one set of cultivators I use, usually the last pass of cultivating. Corn & beans are tall enough the shade out most weeds.
I do set my tomato plant row spacing at 6', and for that I have a couple cultivators for the Wheel Horses. One set has the OEM slot hitch, the other the sleeve hitch system. These too can be used for 36" rows. If your ground is perfectly flat the slot hitch will work well but you have to keep it straight. A slight turn of the steering wheel and you've rooted out some plants. Allowing the sleeve hitch to pivot some will give you a little wiggle room allowing it to pivot swing and pull cultivator in the direction being pulled when correcting.
Ther's a fellow out in Washinton State that does market gardening and works 5 acre fields with a smaller unit called a Planet Junior. Prices on those are out of sight. More for in between row cultivating, or short crops such as lettuce, etc. I like the Bradley's because of the 15" and 16" wheels/tires for ground clearance. Last pic is from last year cultivating tomatoes for the last time. Did between rows with Wheel Horses. Last pass before mulching with leaves and caging.
