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Cool that you are open minded on this topic. :-) I think it would be good to try on both strains. More experiments, more findings... Interesting, never heard of this gg4. You seem to have very different strains in the US than here in Europe... So you gonna defoliate the two of them only...

I just realized, that I referred to exactly this tutorial in my starting post... :-P Maybe it would be a good idea to use that tutorial as a starting point for our experiments here. The author practices continous defoliation, never letting leaves get older than two weeks. I am still not sure if...

I think this was the tutorial where I got the theories about the influence of irradiation amount and airflow on bud growth from. The points which are outlined in the text are totally making sense, the only thing I am missing there is a real side by side comparison to proof the them. Actually I...

Very cool that you are in. :-) Is gg4 an acronym for the "Gorilla Glue #4" strain? I don't know exactly which defoliation schedule would be a good starting point. The question is, if the pruning should already start during veg or only later in flower. Additionally we should think about how many...

I totally agree, 50% should be a good starting point to see clear results. Moreover I think it would be important that the removed foliage on both plants match in amount, age and location on the plant. The studies I've read on other plants indicate that there might be a difference between...

I don't use any ventilation before I switch on the 3rd 36W tube as the temperatures have always been between 25°C and 30°C up to that point. Most of the time bringing them outdoors is the best option, would love to have that opportunity as well... Well good luck with your grow and have a...

Do you have some grow space to spare and would be willing to document a side by side experiment on some clones?

Don't get me wrong at this one. I meant that you alter the growth pattern of the plant, therefore limiting its self organizing abilities. That is the point where it might be beneficial to remove shading foliage which the plant produced while aiming for a normal growth pattern. So the one and the...

That's why I assumed that the results of defoliating might be more distinct in plants with altered growth pattern, but so far it is only a theory of mine...

I am actually working with a guy from the local University but our problem is, that we can't work on this topic in the labs there or even publicly because we have a little legislation problem in our country. So doing chemical analysis is a little bit sneaky for us and setting up larger test...

What are your growth parameters? Is it indoor? Do you use SOG or something like that? And what strains have you experience with? Do you have a journal of your side by side experiment? This would be very helpful I guess... Sidenote: I tried defoliating some plants in the end of the 3nd week now...

Good to hear :-) In my experience it isn't necessary to have a load of bulbs for seedlings or small clones, as I said, two 36W are absolutely sufficient for that purpose in my opinion. At the beginning I even keep them under one 36W 120cm tube, approximately 2cm away from the lightsource. I am...

I agree with you mostly on the fact that the plant is able to organize itself when left alone. I think results would be more significant in plants with altered growth pattern like topped and trained plants. However it seems -at least from studies in other plants- that there might be some...

Well that is interesting, and makes totally sense. If you already have a pheno fitting the environment, the results would be much less significant than when you alter the natural habitus of another pheno to fit them and in consequence clip the misplaced leafs in that process. I have read, that...

Well it wasn't me who said that it would be unlikely to create a thread which stays scientific. I was just trying to find some people which are interested to look into this topic a little bit deeper...

So is it an indoor grow? And which lights do you use? Is it a SOG type of grow? Have you noticed any differences or done any side by side experiments yet? Studies have indicated so far, that new growth may likely be directly influenced by the amount of irradiance which reaches the specific point...

You would classify any kind of leaf removal as defoliation, and in studies you count the percentage of removed leaf mass. In the papers I posted the ranges went from 20% to 90% removed leaves, producing different results.

I am new to this forum so maybe I am a little bit naive about that, but I hope the best. There must be people out there, who are interested in scientific exchange... ... I hope... :-/

Other plants form resins on trichomes as well, and there are a couple of plants which are studied for essential oil production from the leaves. There are some studies on the influence of defoliation on trichome development in Euphorbia spp. for example, other studies focus on the content of...

I would guess the other two bulbs are 4000K or 2700K as they appear much warmer then the other ones. My seedlings went fine under just two 6300K 36W fluorescent tubes, very compact growth and nice leaf coloring. I tend to keep the distance to the plants a little bit closer, like 2 cm or...