Thanks for the welcome and info
Good suggestion about different seed-I haven't thought too much on that so that will be good for me to look into also. So far I haven't found the Persons book for...are you ready..less than 78$!! I would be ecstatic to find one for 5$, I'll probably invest in it though since it is so highly recommended and I enjoy his writing style. The area I want to experiment in never has deer-high population of Amish dutch and they shoot the deer year round here, so I may get lucky avoiding too much of that problem with my first attempt.
I don't disagree with anything anyone has said thus far -not even Whitjr! I'm the guy who will tell you that seed from other areas will work fine. However, he is correct as there are differences in the plant characteristics sometimes.
There are other books out there which are targeted mostly for beginners. You would have to look around the web to find some of them. Most will have some useful info for you.
Now, to the crux of your questions. Lenno hit it on the head. No way to answer those questions with any authority at all. The best anyone can do is speculate.
I recommend a different approach to my customers and friends, however. Crop in crop out doesn't really work well for ginseng. Particularly when you consider replant failure in the equation. As a new grower, plan on a several year learning curve and then never stop learning. Plan on a number of small test plots this fall to see what areas the ginseng does the best in. What conditions does it seem to like most. Then, you can start planting in earnest the following fall after preparing the area through the next summer.
I think the key to wild simulated ginseng is to never try and cut corners or shave time. More and more I'm recommending no soil additives. Let the ginseng grow naturally and if the ground is suitable, you will have a superior product in the end. I currently am recommending the establishment of naturally reproducing patches through the wild simulated method. Let me explain. If you plant seed wild simulated and let it go, by about the fifth or sixth year you will start seeing babies you didn't plant. If you only selectively harvest the largest roots carefully leaving the area as undisturbed otherwise as possible, you will maximize your profit by only producing the highest quality roots which the market wants and is willing to pay for, and you will not cut short the maturation of the remaining plants which will continue to grow and reseed naturally.
The more seed you plant the more mature plants you will have eventually, and the sooner you plant them the sooner some of them will be ready. I'm speculating that at ten years, only about 40% of your plants (which are 10 years old) will be large or larger in size and ready to harvest. By leaving the smaller roots, they increase their age and size, and when they become large enough to harvest they will be more valuable because of the increased age. Additionally, that plant will continue to produce seed while it keeps growing.
Seed. The others are correct. It is nearly impossible to harvest a commercial quantity of seed from wild simulated plantings. not impossible, but nearly so. Plan on picking every ripe berry every other day if you want them!
Don't get discouraged, but look from a different perspective from traditional gardening/farming and realize that you must produce ginseng which the market will want on a continual basis or about the time you get it down you will be out of ground.
I would add to BCastle's recommendation on taking it slow, doing test plots, before you jump into it full force.
You can get a 3 leafer to sprout just about anywhere.. but it really takes 2 or 3 years (growth) to see if an area is really going to produce well.
I have some spots I planted that looked great that first year, and even the second year not too bad, but they just have not grown much since then. 4 years old and still mostly small 2 prongs.
Now if you make it to year 3 or 4 and you are seeing lots of 3 prongs, perhaps occasionally a 4 prong... and some are even starting to produce berries at year 3 and more at year 4 - then I would say that is a sign that you can go all out in those areas and know you are going to do well.
It does take time to find out for sure on this crop.
Its bad to say but it will take 3 or 4 years to figure your own situation and grow site out and another 7 to harvest a decent crop.... And you may not then.
I know you asked for some numbers so ill throw out a few speculative figures....
Look at it this way,43,560sq' ÷ 4= 10,890sq'. Every 1.5sq' you have a plant then that gives you 7,260 roots. If they are a decent size then you may have 200 per lb root count. If they look plenty wild and brought $650 per pound x 36.3lbs then you would have grossed $23,595. If you don't count labor you might as well say your net would be $20,000 over that seven year period.This is almost a best case scenario and I can't stress enough on how many things have to go right for that to happen, when everything is trying to go wrong. A 5-$10,000 net profit is more realistic for several years (if you dont have a catastrophy)until you get things dialed in.... And that's not deducting your labor on maintenance. Everybody has to pay for their schooling first it seems.