I like your style Doc, always have, including the long posts, and not just because they make mine look less abnormal
Sure, and I was explicitly talking about aiming for max yield over time and per run and not what makes a more desirable pheno or "happier" plants. If max yield were my goal I'd be growing in my tubes (NFT), veg on 24hr, flower with the longest photoperiod.... but it's not, so I grow organic in soil and flower 11/13 flower (less electricity while still giving me plenty till next harvest).
You mentioned that in a previous post too, forgot to reply to that: I certainly think that's a valid reason to
try 11/13. Credit for that approach goes especially to DJ Short imo, he has old posts about it at another more respectable grow forum, probably wrote something about it in his book too. I would not run a pure haze on 13/11 for example... but then those don't really need a veg period either. He wrote that to suggest being able to select more sativa dom phenos earlier on though, i.e. for breeding purposes. I disagree when it comes to growing for max yields. For that it makes a lot more sense to run 13/11 and select towards plants that can handle a longer photoperiod. Just as we can still produce enough food to prevent the world from starving largely because we select and breed plants that can take up and process more nutes, not feed the same plants more, or even less.
Also, I don't believe there's a 11/13 pheno that is so much better than what can be found in 12/12 or 13/11 phenos and justifies the decreased lighting requirement. Surely the same taste, cannabinoids, structure and yield can be found in one of the many other hybrids. Same reason clone-only strains that hermie should not exist. At most, it (the hermie or the 11/13 pheno) has desirable genes that should be bred into a better variety (breeding out the gene(s) that mask the desirable gene(s) under 12/12).
Have you tried something like 11.5/12.5? Changing the light period half an hour makes a full hour difference between dark and night already and may be enough to get the desired pheno. I got to ask though, does the pheno expression really go further than just leaflet broadness, i.e. is there an actual difference in the bud it produces?
[ offtopic ]
HPS vegs and ripes just fine for the best growers I know and measure with. Experts from philips and gavita as well as the greedy dutch cannabis grower herd have been testing blue to red ratios for decades. HPS>MH but HPS+MH > HPS/MH. And Gavita DE > All
Run a gavita DE and you won't bother with MH anymore. As I mentioned in the Light???? thread I'm aware that most people here have different standards. We grhttp://
www.rollitup.org/t/flowering-24-12.881499/page-3#post-11856125ow and count only trimmable nugs. I.e. the part that can be sold. The leafy buds from spreading out an MH so much it produces over 1gpw is close to worthless when you get tens of thousands of competitors growing hard nugs with a high pistil to leaf ratio.
[ / offtopic ]
I grow a lot more plants than I flower, giving me plenty of plants to experiment with. Like this one:
View attachment 3486855
Wish I had a pic from the side to show how much it stretched after 4 days no light. Also notice the halted chlorophyll production...