11/13 and 10/14 schedule during flowering

whether you give 35 dli over 12h or 11h or 18h (with an autoflower) won't make a difference in yield, ceteris paribus. It won't 'unlock' anything. if you do reduce hours of light, make sure DLI remains unchanged or it's just going to be a net-negative even if the unproven hypotheses related to longer dark cycles is true. This concept relies entirely too much on anecdote and that's how you end up spraying milk on your plants, lol. it's unlikely this can change potential growth rate, so shorter flower phase just means smaller yields with less time to develop, relative to any 1 genotype's potential growth rate. Productivity cannot increase if vege time remains same and flower is shorted with some proportional loss to yield (just basic math), then productivity goes down. (productivity is a rate not a counting stat) There's no magic here. if there is a correlation that is statistically significant it won't be groundbreaking. Energy is a currency. Unless it is somehow making more efficient use of it due to the extended dark cycle, it can't possibly cause more molecules to be formed or more active transport to take place or plant maintenance etc-- anything that requires an input of energy. The cost to form and break covalent bonds does not change because the dark cycle got longer. The cost of growth and maintenance is very unlikely different just applying common sense. Also, how does it accrue more carbon faster to support any faster growth to mitigate the shorter flower time? You can't manifest mass from nothing. even if a longer dark cycle speeds up flowering, there is unlikely any benefit to doing so. A lower grams / kw-h used and a reduced productivity is most likely.

I flower on 11/13 just fine. Match the DLI and its good within a given ratio. Oby 1/23 is not going to work. blasting a whole days worth of light in a 1hr period would destroy it if you could even hit that DLI. No idea of the min light on time. prob varies by plant, with cannabis I try and give it a min of 8hrs on. Small changes in light cycle should not alter anything much. -/+ 2-3hrs, the gold standard and biggest thing that has shown measurable effect across the board is DLI. Hit the DLI and get the yield. lower DLI and less yield.

Yeah, just shortening flower time. Other maths relate to hormones and secondary metabolite ratios. This is still from the same known science you were emulating with your first experiment.

Try not to mess with a photoperiod's circadian rhythm; it's an extremely stressful thing that can cause a plant to become hermaphroditic. I've done it many times over the years; once the flower is initiated, stick to your guns. The idea of switching times to better suit nature's season was something I thought would be beneficial, possibly help plants better transition, but yeah, all it does is create seeds from the extreme stress, You wouldn't think it, but upon my study as into why such a strong response, I discovered its one of the most stressful things you can do is messs with a photoperiods circadian clock. Plants' clock becomes destabilized, out of sync, disrupted rhythms lead to altered expression of genes, lots of ROS and JA are released, kinda like ripping/resetting the clock out of a central processor, forcing a reboot. Gluck.

Hello, i am using the 11/13 over 5 years and the results are very good. I use it because i mostly grow sativa strains and it helps a lot for reducing excessive streching. I also provide 24 hours darkness before switch in 11/13. Some sativas, like these i usually grow, can easily strech for 5 weeks in flowering. So i think depends from the type of strain you grow. Indica strains will not benefit but many sativa strains especially 100% sativas or haze strains will be much more manageable for you. What kind of strains do you grow now?