I can't tell, but you can guesstimate with your experience with your sqare footage and equipment used (experience).
If you haven't changed lights or other factors, you'll ikely hit that same ceiling regardless of size of plant -- in fact if overfilled, you'll get less than normal. A differnt strain may very well hit 1lbs doing th esame exact things, so don't think it's self-inflicted problem specifically.
I grew a plant out longer and get same yield with same equipment.. just more fluff and trash below - even if lollipopped.
the amount of energy you provide will be the limiting factor (along with CO2 if you have strong lights), Increase fertilizer all you want, but without more light you won't produce more bud. It'll be relative to strain too (relative to each seed of same strain too).
Can you do better with the same equipment? i bet you can, because no one is doing everythign perfeclty and efficiently as possible. But, if you are doing things mostly the same way and only grew it out more, that will have a similar yield as what you experienced in past... potentialy a greater portion of fluff if unrolly and unamanaged (doesn't look like yours are that way with a screen, just saying in general)
Something i am coming to terms with -- likely better to grow smaller plants with greater control over how it shapes and grows. A more even canopy and more consistent growth on all colas will result = more yield in same space. Totally avoid the weak colas by simply not having them.. lol.. i have a photo of a single plant taking up half my bloom area -- my old way of doing things. It does well, but i expect am uch better yield when i switch to 4 plants filling that same 1/2 space. Looks you you already do that to some extent, but altering how you prune or train may help.
