Looking for expert opinions on yield per light/ per square ft

Juggernaut

Dope Dynamo
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Going to court so I need to present what expected yields are.

Per 1 k hps light and per square ft.

So please post these yields.

Grow us top notch.
Co2
Nutrient film technique
Sentinel grow monitoring system

Tyvm
 
Good luck in court!
But everyone's yield is gonna be different. Anyone could have a "top notch grow" and yield super low. It's all based on experience not equipment imo.
 
The internet says 400-500 grams per sq.meter is average.
It also reports optimal PPF indoors is 700umol per sq.meter.
This is not specific to your set up at all. 🤷‍♂️
 
117.6g per sq ft is about theoretical maximum probably, which I know commercial grows arent even getting, I could probably pull it off though , 😎, lol, With the works.

You'll probably get 40-80g/per sq ft

Really need you're data/more data.

And if you cant get 30-80 g/sqft Im not sure about staying afloat with profit margins
 
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I say depends on grow style , genetics, then type of light , let’s rock the boat , LED out perform thd HPS ? 🙄
That's why I bought into led's I got an SF1000 and grew 1 of 3 triplets under the led and 2 under a 1000w hps. I got more from the led grown plant than either of the 2 hps grown with harder buds about 1/3 more smoke able bud from my first grow with led lights....sold!
 
The unanswered question is relative also -- VALUE of 1 gr of weed.

Average price per unit of purchases, by product type​

People who purchased cannabis in the past 30 days reported the average price paid per unit, by product type. Over the past 30 days, people spent the most on cannabis cartridges/vape pens ($38.64/cartridge) and concentrates and extracts ($35.32/gram) [both unchanged from 2021]. The average price per unit for more frequently used product types was $8.79 per gram of dried flower/leaf and $6.18 per serving of edible cannabis (both unchanged from 2021).
Given that the audience for the answer is a third party that may or may not know shit from shingle jizm (I put in Shineola put got auto corrected) if is important to cite a knowledgeable source. Not sure if peeps remember the answer to-- How much wood could a woodchuck chuck if a woodchuck could chuck wood?
Cannabis Business Times 2016
Measuring Yield
Yield per square foot ranged among research participants from 60g/sq. ft. or more to less than 20g/sq. ft., but the average yield per square foot, during the most recent harvests, rested just about in the middle at 39.5g.


  1. STATE OF THE CANNABIS LIGHTING MARKET

Measuring Yield​


CBT STAFF | SEPTEMBER 2016
Yield is the holy grail of cannabis cultivation. So, it’s not surprising that most professional cultivators measure yield in some form. Most — nearly three-fourths (72%) of the cultivators who participated in CBT’s research project — say they measure yield per square foot. However, 38% of those who say they measure this metric didn’t know the actual yield per square foot of their cultivation operation’s most recent harvest, and some respondents who elaborated further on the question indicated they measure this metric somewhat informally.
Joe Romano of The Indoor Garden Shop in Detroit, Mich., who participated in the research project, says that his operation measures yield per square foot “in a roundabout way.” His team looks at “given a particular space, how many harvests can we get in a year,” he says.
Measuring yield per square foot, he believes, is one of the more important stats to track, if even informally, but looking at yield per strain also is important. “I think we spend more time balancing looking at different strains [and] … what they produce,” Romano says. “For example, the majority of what we’ve been growing lately is Gorilla Glue, [for] which yield per square foot is fantastic compared to a number of sativas. Ours have been more of a focus on a variety of plants and [their] marketability than anything else.”
Vince Hanson, cultivation director at Leaf on the Mesa in Pueblo, N.M., another participant in the research, also believes measuring yield per square foot is important (“You can have all these lights in the room, and you can be wasting a tremendous amount of square footage,” he says), but time constraints have not yet enabled his team to do so. “This grow started about a year and a half ago. We just got over all of our weird growing pains,” he says. “And so … the last six months, we’ve been producing steady.”
measuring_yield_chart_2_fmt.png

In the future, he says, Leaf on the Mesa will probably track this metric.
Right now, Hanson says, ‘We look more for our averages. … We have to do a wet plant weight and a dry plant weight, so when I enter everything into the metrics, I can find an average plant weight. So if I find a drop-off in the average plant weight, there’s something going on, wherever they came out of, or something going on with the strain. So I pretty much focus on average yield,” he adds. “I keep logbooks of everything. … I build spreadsheets for all of these and print them off. As they harvest plants, I write down its tag, its wet weight, its waste weight, its bud weight, all those things.”
Research participant Robert Mead of Sound Cannabis in Aberdeen, Wash., says his business does not measure yield per square foot, but, he says, “that’s something we’re going to be looking at specifically. I’m watching the market, and the prices are starting to come down. I see a lot of really cheap concentrates in the market, so I really want to look at my return on investment.”
Yield per square foot ranged among research participants from 60g/sq. ft. or more to less than 20g/sq. ft., but the average yield per square foot, during the most recent harvests, rested just about in the middle at 39.5g.
Another metric that some cultivators feel is even more important to measure than yield per square foot is yield per watt of light; however fewer measure this than yield per square foot. Two-thirds of respondents (66%) say they measure yield per watt of light; but, again, nearly one third (31%) of those cultivators say that their operations measures this, but that they don’t know what the yield per watt of light was during their most recent harvest.
Thirty percent of cultivators say they don’t measure yield per watt of light at all.
Jacob White of R. Greenleaf Organics LLC in Albuquerque, N.M., says, “We track all of our production by grams per watt of lighting. We add up the total yield of all primary and secondary bud and divide by the number of watts illuminating the room.”
This metric is important to measure, he says, because of New Mexico’s canopy limit. “Because of a restrictive plant count (450 plants total), we must grow larger plants. Because of variation in yield between strains, we have varying amounts of plants in each flowering room to compensate. Comparing rooms in terms of grams per watt allows us to compare apples to apples,” Greenleaf says.
 
Every seed description claims 500/600 grams per mtr but that's not reality, some plants just won't ever yeild well and some yeild great without too much trouble.

Imo it's a good example of genetics not working like a recipe or all plants would yeild well.

With 1k hps 0.5/1g per watt is fair balpark figure depending on your experience.

Good luck at court
 
That's why I bought into led's I got an SF1000 and grew 1 of 3 triplets under the led and 2 under a 1000w hps. I got more from the led grown plant than either of the 2 hps grown with harder buds about 1/3 more smoke able bud from my first grow with led lights....sold!
Wow, I like my LED's but that much of an increase? With electrical cost going up, I may still grow in July & August. SS
 
Wow, I like my LED's but that much of an increase? With electrical cost going up, I may still grow in July & August. SS
I'm running 900w led's in a 5x5 + a 1250 w heater....Its not saving me anything on electricity. I never needed a heater with my 1000w hps.
 
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