Are you working for the industry ?
respect
yes, and may i add "God fuck me to tears!" i guess reading a little bit of a thread is not necessary anymore before you start dropping knowledge bombs.
Every genetic, every plant reacts differently depending on the genes from its ancestral make up...A swazi will react completely differently to an Afghan, will react differently to a thai all is not 12/12..
and our stuff today is all poly poly poly hybrid...
Every genetic, every plant reacts differently depending on the genes from its ancestral make up...A swazi will react completely differently to an Afghan, will react differently to a thai all is not 12/12..
Only way to know, is to go...What I do know is there are ways to work outside the normal 12/12 and things are 100% fine, I do habitually. It all comes down to how the individual plant reacts. Same as planting a clone straight into flower, you will never know how a particular cut reacts, until you try it, some cuts love it some hate it, one plant may love it, its sister may hate it, due to the unstable parent makeups. Most plants DO NOT at the same time need 18/6 to veg, I don't use 18/6 at scale and 99.99% of plants are 100% fine with what I run them under.
Many plants will flower perfectly fine under 14 hours of light, some will hate it, all depends on the latitudes the parents came from, as well its winter, how harsh that is, afghans want to flower through no matter most time once the ball is rolling and they have triggered.. In swaziland they flower crops year round these days, with hybrid genetics that have a fair amount of affie in them, or at least ten years back was like that. If plant happily stays in flower, the the more DLI, the more biomass if all other demands are met.
At the same time, the increase in yield may be offset by longer ripening times and longer cycles, where there are ways to speed up a cycle and gain more overall in a given amount of time. Ie. make a normal 9 weeker be completely done at week 8, without hormones and PGR's etc. but with environment manipulation and also one can make that 9 weeker go for 11 weeks if one does something else.
One could get the same increase in DLI that the longer day, ie shorter night provides, while not getting the drop in ethylene that the shorter night provides. Some plants will produce enough ethylene to flower no matter once started, autoflowers then on the extreme of that spectrum, while others need more or produce less so are more sensitive to the night hours. As said depends on the latitudes the ancestors came from and the particular combination of genes in each plant as its all so hybridized at this point. One can supplement or increase light ppfd, to achieve the same DLI, in a shorter day and achieve both ends, more biomass, and quicker ripening and budding onset. Of course other factors involved in quickening up cycles. If you spend the money on power, for longer hours, or for running more wattage during normal 12/12 and are achieving the same DLI, then your power costs are the same, the longer nights will shorten up your cycle, or rather the shorter nights of 14hr days, will lengthen your flower cycle by a little bit for most genetics. On the otherhand, if someone has a real production type afghan leaning plant, that will power through a flower once started no matter, and they cannot afford to put in more lights, then they could achieve a little more yield yes by paying a little more power and running 14/10 hour flower cycles. But over any given timeframe over a few crops, the most yield would be gained from increasing light during flowering times to get the max DLI that your environment can cope with.
Sealing a room, doing everything optimal, maxing out the lights with LED...you will squeeze the most from a normal cycle I'd guess as the upper limit for light once all else is met, for weed is pretty damn high..about 3x more that what most of us run our rooms at...but then temps/humidity/vpd must be right, co2 must be right, food right, if all else is met, yield just goes up to the same degree..Bugbee already shown the taper off on the graph if all else if met, is like over 3000ppfd i cant remember..I know here in summer our midday light outside approaches that, most rooms running at 1000 or below..only once you hit that limit, would increasing DLI through longer day hours give added benefit over dialing existing hours, ie increasing light and matching all to support that testing environment so plant doesnt stress. Weed can take full advantage. If no viroids and shit..LOL If inherent infectious shit, its like cranking the NOs on an old jalopy, something will blow up. When you pushing a plant, as said food demands go up, etc..everything must be met. But there are guys pushing it..Guys mentioned their names on here..they probably getting 3x the yield of decent growers by having it so fundamentally dialed for high performance. And then their genetics they run suit their system, as here different plants will always react differently to being pushed in different ways, some will thrive and some not like it, one has to work out which also suit ones situation.yes true it is different between strains
It's currently 5° here today I second this
Run a sealed room and then it doesnt really matter, if anything it just keeps your aircon bills down.
first of all, the Internet began; January 1, 1983 is considered the official birthday of the Internet. which is 41 years ago. you weren't even alive then.
and here is the fountain of knowledge that will wow us all.
O U C H ....
