Hi Hmmm,
From what I learned this year size matters. Leave the little bitties in the ground for the next year as they don't seem to transport well. The medium size tubers would be what I would suggest for pot culture. The big ones need to be divided and they do make well when cut up(like potatoes you do want one or more "eyes" per cut up piece, but think they would do better in the ground.
I haven't tried using them as goat food other than the sunflower top part. My ladies love sunflower leaves and flowers. The tubers
should work well as poultry, pig food or
cattle feed. Will be doing that next year myself-just going by what I know of the other animals and birds typical eating habits.
What size pots are you planning on using for these? When digging these up I have found they can be spread a couple of feet across and may be a foot down. That was on medium sized tubers. I don't think this is something you want to crowd in too small a pot.
As long as tubers are planted right away the propagation and success is pretty good, better than 90%. The only ones I lost this year were small ones I didn't get planted quick
enough. The other tubers made up for it though. Ten feet of a double row of small/medium yielded better than 10 lbs or roughly 1/2 lb.per plant. Some had 4x times that-those that got the most
water (planted them in a keyhole-which used to suck up water off the roof after it went through the terraces). Think a lb + per plant is a good guesstimate based on what I've already dug up.
Sunchokes will send out multiple stems given a chance. If there is more than one eye on a tuber, they definitely should produce multiple shoots. Care will dictate how many new plants(tubers) you'll get as they do like moisture, but also periods of relatively dry conditions. Think they do need to dry out a bit between waterings- just an observation.
Did have some yellowing leaves later in the monsoon season after we had 1.5 inches 4 X in a month. That's a lot here. As soon as it stopped raining most grew new leaves and were ok, it was the smaller tubers that didn't make it. Would say drainage is important.
I'll have to weigh out some tubers to see how many should make a lb and will let you later tomorrow. Have to work in the am.
Pat