was suggested to show and give some ideas on how I made the units,
https://permies.com/bb/index.php?topic=3087.new;topicseen#new I really did not document the process, but have some pictures so I think one can may be see what I did do,
tree planter,

the basic machine is a three point single shank ripper, in a since, there is the adjustable bar the chisel point is attached to, I think I have a colter in front of the shank,( straight disk to cut any residue, that would hang up on the shank), then on the back of the shank I welded on the shields, with the flared top 45 degrees, it is more of a funnel to feed the trees into, (the first attempt I had the wheels (press wheels),on non pivoting or floating bars, but discovered that the wheel needed some independent movement to work the best, so I rebuilt that part, attached the seat to one side and the tree tray to the other side, the wheels are off a old plow, and the angle helps the packing and closing process, the process is to take the tree, and feed it into the shields which the shank has just opened up a trench and the shields keep it open, you guide the tree until the packer wheels press the soil around it.
the spacing is done by the jug that was being drag ed, I had a pin that one could make quick adjustments with, on the length of the chain, when the jug came to the tree just planted you put in another one, you keep very busy if your putting them in at 6 feet spacing 1 mph is fast, (to make communications easer, I gave the helper, on the machine a whistle to blow as to be heard easily by the driver in the tractor.
I will try to get a few side pictures of the machine and post later,
the fabric layer is a frame, (this machine could be improved with some input, but it worked OK, so I left it), some of what makes it tricky is getting the angle on the 3 point set so that the machine is in the ground in the front and correct in the rear as well, if it had gage wheels to float on may help and if the center wheels were sprung to keep constant contact on the tarp as well,
but any way, (I found it best to not load the machine and make some runs on open ground to see how it is cutting and throwing and covering the soil, before using the mulch, first the front shanks cut a ditch and throw the soil out to the out side, leaving a place to cover the edges of the fabric, the wheels are angled to the out side so the fabric is stretch some, if the pressure is if correct it works adequate, then the back disks they throw the soil back over the edges of the fabric, to start I did a trench and put some landscaping staples in it, in the trench, and then cover the edge. The machine needs to be in the ground, then as you travel over the trees,
(the picture show the operator, with a utility knife to slit it for the trees, the trees need to be pulled up through by hand, you can see some pictures of this as well, and a landscaping staple staple is put in one the down wind side of the tree, best if a staple is put in on both sides of the tree, but the better way, to do that, is to have the operator have a can of marking paint, and spray a spot on the fabric where they think the tree should be, (what I found is some can do a very good job with the knife and be right on some people gage it up to a foot off), the other problem is if the operator cuts the slot, (make a X slot not just a slit), so one ends to make a second cut, any way) so I found a very low percent of trees cut by the knife, but some needed replanted, but I found that if the person sprayed painted the spot, even if off it was usually off consistently, and very easy to feel the tree under make a precision cut and cross cut, very few damaged trees, and the slots much more accurate,

pictures of some of the weeding and some of the young people that helped me, also note the soils and the plant life, to begin with and the last pictures with the grass that was planted around the trees that has grown in, (the last pictures are some of the first trees I planted with the system.
one replants in the fabric mulch, I make a small 3" auger on a shaft (similar to a bulb planter) and use my cordless drill to power it and drill a hole in the soils and put the tree in and add soil back in and step on it. (have some deer chew off some of the trees).
some links (for information only and illustration, not a recommendation or endorsement),
http://extension.missouri.edu/publications/DisplayPub.aspx?P=G5009 http://www.whitfieldforestry.com/Transplanters.html this company has a very good mulch machine, I would copy it if building again,
http://www.treesareus.com/products.html landscaping fabric
http://www.shawfabrics.com/Framify.php?Page=Home.php