Ted, this is a great experiment!
Part of me wishes I'd found it sooner but I'm glad I didn't since I'd be in constant anticipation of the outcome!
I've wanted to do an experiment like this all year, but didn't have the time or else forgot.
Anyway, I grow all of my plants in 72 cell trays because I only have one light and like a lot of plants
. However, I know that by the time I plant them out, they are root bound and only about 4 or 5 in. high. The peppers were even smaller.
If you've noticed my postings about wanting a greenhouse for seed-starting, than you how I'd like to be able to up-pot LOTS of plants (without the increase in electric bill that comes with more lights)
I'd been wondering just how much bigger the seedlings would get by being up-potted and you certainly answered that question.
Now, I do have a few more questions and I'm wondering if anyone can lend their experiences with them.
1. Did plating larger, up-potted tomatoes vs. smaller, cell-grown tomatoes really make much difference? That is, did the bigger ones produce earlier and more overall, or did the small ones catch up (as different sized plants oftentimes do) and produce the same?
You'll have to continue this experiment, Ted, when you plant your garden and let us (me) know
2. Is there a difference in size between plants planted in a smaller cell and then up-potted and plants that were just planted in the bigger pot to begin with?
3. All of the above....but for peppers! I noticed that my pepper plants went into the ground fairly small (3 or 4 in.) and occasionally root-bound. last year and while they did put out a good harvest, I can't help but think that they could have done better.
As peppers seem to be a little slower growing and less vigorous than tomatoes, I'm wondering if up-potting them would yield as noticeable results as with the tomatoes?
Keep us posted with the experiment