Maximum yield potential

As title says, what is my maximum yield potential?
- Total light wall watts?
- PAR watts?
- Strain yield (breeders write on their website for example 550-600g/m2) which is determined with tent size?

what do you define by "yield"?

you could veg a plant for 6 months and then flower it and get an enormous yield

you could also flower several cycles of freshly rooted cuts in that same space in that same time

Yeild = dry bud weight. Maximum what you can get, whatever is your tecnique (veg for 6 months or 12 months) in a tent.

If you're looking for a formula for maximum yield, there's really only one:

Patience x patience x light x water/nutrients = maximum yeild.

You can easily get a pound per plant if you grow it long enough and properly.

My observations lead me to believe yield per par watt will average 1.5-2.5g and can possibly be as high as 4g. I think 2.5 is a good goal in soil while 3 is a good goal in hydro.

TacoMac said:

If you're looking for a formula for maximum yield, there's really only one:

Patience x patience x light x water/nutrients = maximum yeild.

You can easily get a pound per plant if you grow it long enough and properly.

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Yea, I know that.
I am looking for optimum answer, theoretically.

Rahz said:

My observations lead me to believe yield per par watt will average 1.5-2.5g and can possibly be as high as 4g. I think 2.5 is a good goal in soil while 3 is a good goal in hydro.

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That I was also thinking. I have 280W COBs or 135 PAR W and 0,64m2 tent. If I look at example from above...
- 280W wall watts ---> 280-560 (840) grams ---> which is 1-3 GPW
- 135 PAR W ---> 337-540 grams from @Rahz formula
- 0,64m2 ---> strain from breeders never excedeed 700g/m2 (I didn't saw higher number, so let it be 700) ---> 700*0.64 = 448 grams

So we can see numbers are from 280, 337, 448 to 540 or 840. I am looking for maximum number which is theoreticaly possible... so guys, which one is achievable?

Skill plays a part too. Those maximums are what pro's with ample resource and skill can attain.

Nugachino said:

Skill plays a part too. Those maximums are what pro's with ample resource and skill can attain.

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There is some upper limit which cannot be exceeded. You can't expect 1000g from 200W light, right?

This is a silly thread, started by a total noob. Why are you folks with experience even wasting your time saying anything besides "do your research, grow, then tell us what YOU get."

Bout a pound

KonopCh said:

There is some upper limit which cannot be exceeded. You can't expect 1000g from 200W light, right?

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The same can be said for a plant known only to produce a couple hundred grams. You cannot possibly expect it to suddenly become a several pound monster just because you've thrown it under 1000w hps.

There's too many variables to give you a definitive answer. You'll just have to plant a couple beans. Try to follow the instructions provided. And hope for the best.

There's an entire thread about it...
https://www.rollitup.org/t/co2-fixation-calculation-tool-for-cobs.896232/#post-12240011

KonopCh said:

So we can see numbers are from 280, 337, 448 to 540 or 840. I am looking for maximum number which is theoreticaly possible... so guys, which one is achievable?

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I don't think 3 GPW is achievable without the light being close to 100% efficient. 2 GPW is a rarity. I think I remember one person making the claim. High numbers are usually in the 1.5-1.8 range by output watts. 135 PAR watts you can expect 200-475 grams. Realistically in hydro you're looking at around 400 grams (1.4 grams per output watt from your lamp) for a good grow and somewhat less in soil. Obviously there are a variety of other factors that work their way into the final number.

Nugachino said:

The same can be said for a plant known only to produce a couple hundred grams. You cannot possibly expect it to suddenly become a several pound monster just because you've thrown it under 1000w hps.

There's too many variables to give you a definitive answer. You'll just have to plant a couple beans. Try to follow the instructions provided. And hope for the best.

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Ahhh guys... you didn't read when I write "when in optimum conditions"...

Rahz said:

I don't think 3 GPW is achievable without the light being close to 100% efficient. 2 GPW is a rarity. I think I remember one person making the claim. High numbers are usually in the 1.5-1.8 range by output watts. 135 PAR watts you can expect 200-475 grams. Realistically in hydro you're looking at around 400 grams (1.4 grams per output watt from your lamp) for a good grow and somewhat less in soil. Obviously there are a variety of other factors that work their way into the final number.

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That is answer I was looking for.
Thanks!

So I guess I need some experience to achieve that. I only manage 380-400g in soil with 4 autoflowers.

KonopCh said:

That is answer I was looking for.
Thanks!

So I guess I need some experience to achieve that. I only manage 380-400g in soil with 4 autoflowers.

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I think that's really good for soil. I see pictures of autoflowers and they just look packed with bud.

KonopCh said:

Yea, I know that.
I am looking for optimum answer, theoretically.

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go watch growmau5's vids he usues g/kWh over the entire cycle which is the best metric.

you should also include veg energy and climate control energy in this as well

Rahz said:

I don't think 3 GPW is achievable without the light being close to 100% efficient. 2 GPW is a rarity. I think I remember one person making the claim. High numbers are usually in the 1.5-1.8 range by output watts.

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Grams per watt is, frankly, the most useless measure there is. It all depends on how many plants you're growing, for how long, and the amount of light, and many other variables that are so out there that it's simply not possible to count it as a reliable measure.

Take my example, for instance. I grow two plants at once one time per year under a 600 watt HPS. I usually net between 4 and 6 ounces per plant. Let's say I get 5 from each. That's 10 ounces. That's 284 grams. That's .47 grams per ounce.

If I just grow two more plants, which is very easily doable, that nets me 20 ounces which equates to 567 grams which is .945 grams per watt.

If I go back and grow 3 plants but run a scrog on them, I can easily get 8 to 10 ounces per plant. That scenario leaves me with up to 30 ounces, which nets you 851 grams, which runs it up to 1.41 grams per ounce.

And that's still not a maximum effort.

There are so many different possibilities, strains of high yeild plants, growing methods and lighting combinations that grams per watt is, sorry to say, a completely and totally useless measure.

TacoMac said:

Take my example, for instance. I grow two plants at once one time per year under a 600 watt HPS. I usually net between 4 and 6 ounces per plant. Let's say I get 5 from each. That's 10 ounces. That's 284 grams. That's .47 grams per ounce.

If I just grow two more plants, which is very easily doable, that nets me 20 ounces which equates to 567 grams which is .945 grams per watt.

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if you can double the yield of a light simply by adding 2 more plants something is wrong, like your light is way oversized for the space in the first case. i guess thats where leds win with continuous dimming at any power