Blue Spectrum In Flower Makes More Resin?

rrog · Oct 3, 2011

I'd like to use MH in veg and HPS in flower. No special bulbs, no EYE Hort.

Using a more red HPS is not ideal according to some who feel the Blue Hort keeps plants shorter and develop more resin.

I haven't found anything definitive with searches yet. Lots of opinions both ways, though.

My intuition says they're not likely to stretch less with blue. Also I'd be surprised if blue helped with resin.

I'd be more inclined to believe these opinions started with EYE Hortilux than growers.

rives · Oct 4, 2011

It would be good if you could compare the SPD charts (spectral power distribution) to see exactly what each lamp is putting out. I know from my experience with both PL-L lamps and my led fixture that blue will keep the plant shorter and the internodal spacing tighter. I don't have any idea about the impact on resin production.

rrog · Oct 4, 2011

Thanks rives. How you been? I'm thinking that the resin aspect of all of this comes about from the UV-b that MH can output. Blue likely doesn't have an effect on resin.

So you found the blue kept things shorter. Among the same strains.

I can compare charts, but essentially I'm just wondering about the potential benefits of blue in flower. I know that a blue hort has blue and MH has blue. I guess I'm thinking that if I have a standard HPS in flower, it's probably not worth it to add a MH or blue hort to get a bit more blue.

I do have a very specific bulb for UV-b, however. 8 hours a day

paladin420 · Oct 4, 2011

Tagged...this is one of the great questions imho...Puf puf pass to Phaeton. I think he can smell the colors...

alkalien · Oct 4, 2011

There are quite a few people who claim, that a higher dosage UV a/b will increase the resin production since the plant uses the resin to protect from too much light. That is claimed to be the reason highland Sativas are stronger and frostier than lowland indicas. I just saw a Howard Marks video in which he says he allways bought hash from high countries for the stronger resin production on higher fields.

My LEDs Systems seem to have that effect, I get frosty buds. I don't touch my buds for smoking an longer I allways use something so my fingers don't get sticky. I love it!

However on the downside I have plants with about 2 monts of veg which don't stretch at all in flower. A plant that comes from a fully rooted 15cm clone and gets two monts of veg shoould be more than 50cm high when stretch is over, shouldn't it?

rrog · Oct 4, 2011

I'm can't answer your question, but in my opinion, the resin has nothing to do with light protection. I believe that is simply a perpetuated urban legend.

I believe there is a relationship between resin and UV-b, so I use UV-b. So far, still not seeing a compelling reason to add blue, however. Internodal spacing may be shortened, but I'm not tempted to add blue just to get that feature. I'm much more concerned about producing crazy good quality

BudZad7 · Oct 4, 2011

Wide Spectrum lighting

Wide Spectrum lighting

:tiphat:

Hi All !! Nice Info from all ....Experience is the key, and lots of years of trial and error, also, people tell you what they like/dislike, then you dial in various qualities of certain strains, looks like Haze crosses and making a comeback, anyway the topic of LIGHTS

In the 80's we had MH lighting the bulbs had 5500 Kelvin color temp
people loved all that was grown under these lights,lots of RESIN
The idea of growing indoors, was to simulate outdoors inside......
So, during bloom 12 hr period turn on your HPS the 1st 3 hrs only, then
the next 6 hrs MH only, no HPS, then the last 3 hrs HPS only.....
this as you can see, simulate outdoor light in the fall
Early in the morning outdoors, it's orange glowy light is Awsome for photography, and all plants love it, and this happens again in the early evening, but mid day is more white light, so MH light,,,your budz will be of a Better balanced quality Try this lighting setup, you will be Happy! :wave:

Also, here on this planet, is there a place that has orange light only all day long, yeah, maybe on MARS !!! LOL!~

rrog · Oct 4, 2011

Thanks BudZ. I can appreciate people wanting to mimic the light during a typical day, as you've described. In general, nature does it best. I haven't yet seen a real smoke-quality advantage to a lot of blue during flower. UV-b, I'm on board with. Blue? Not on board.

supermanlives · Oct 4, 2011

when i used mh in flower . plants were shorter with tighter node spacing and i believe a tiny bit more resin. yield was a bit lower than hps

rrog · Oct 4, 2011

Thanks Super. Seems consistent that the blue shortens internodes. I think the resin is more related to the UV-b that you apparently get a bit of with MH

VerdantGreen · Oct 4, 2011

i dont think there is much difference between normal hps and horti blue type hps - because they still have very little blue in them.

MH on the other hand certainly seems to keep the stretch down and give close internodes.
i use MH for the first 3 weeks and then swap out to hps.

rrog · Oct 4, 2011

Some don't feel there's a need for MH at all. Some prefer straight HPS the whole grow. I'm not in that camp yet, but getting there. The internode compression is a good thing, especially in my micro grow scrog, so per my original post, I'm looking at veg with MH, then to HPS for flower. Textbook. I'm now just not seeing the need for the Blue Hort specialty ($$$) bulbs.

longwaters · Oct 5, 2011

i thought the hortilux hps wasn't worth it, then saw this:
http://www.rollitup.org/indoor-growing/355137-think-your-bulb-doesnt-matter.html

FunkBomb · Oct 5, 2011

I've gotten buds bigger than my arm with cheap $10 HPS lamps. Do the $70 lamps do a good job as well? Sure. I just don't want to pay that much.

rrog · Oct 5, 2011

Longwaters. Thanks for that link. I read the entire thread and commented at the end of it. Not all bulbs perform the same, that's all that comparison MIGHT have concluded. I'm not all moved to spend $80 on a bulb. And I use blue hort HPS now.

My original question was with respect to the addition of blue wavelengths during flower. Other than shorter internodes, I'm not finding much else that would make a guy want to add blue.

longwaters · Oct 5, 2011

sorry rrog, i didn't mean to sound so conclusive. i saw verdant's comment about the extra blue in a hortilux hps and was reminded of that thread. my conclusion from that bulb comparison thread was if a little extra blue in the hortilux spectrum can make such a big a difference, maybe it's not an orange or blue spectrum the plants like but more of a mixed one.

i am derailing the thread a little, the question is if the blue enhances resin not yield. i tend to notice that uv and metal halide add more resin, but i can see how there could be more uv from a mh than hps as well. next run i'll be using a mixture of sunpulse 10000k and hortilux hps, i'm interested to see how much resin there is.

rrog · Oct 5, 2011

Longwaters, no worries my friend. I'm looking for data, and you helped. I'm grateful.

I'm not finding much hard evidence of blue benefits during flower except for the shorter internodes, which may be a big benefit for some. Otherwise, so far, no compelling reason to run around trying to add blue.

longwaters · Oct 5, 2011

i just read your comment on that thread and realized you are very right about the test being inconclusive. i would also love to see a comparison of some more of the major brands, along with a spectrum chart for each bulb. that could prove to be some very informative data! it is a shame the plant is illegal and such scientific studies aren't done every day.

rrog · Oct 5, 2011

I agree with every aspect of your post. Also, the same bulbs after 100 or 500 hours, since most bulbs pop out after some hours, but likely to different degrees.

Thanks very much for helping me

VerdantGreen · Oct 5, 2011

i would say that the shorter internodes from MH can increase yield because you then have more buds closer to the light than if you have big gaps between your nodes - but you will probably have to switch out to an HPS after the stretch to realize the potential extra yield.

my comment about the hortilux still not having much blue relates to the fact that they have say 20% extra blue but then 20% of bugger all is still bugger all.

i have a couple of 24w t5 tubes either side of my 250 cab and ive been experimenting with blue, red, green and UV tubes in these as supplemental lighting. cant say definitively that anything has made a huge difference yet, but i reckon blue tubes in both of those will give more blue than you get in an 'enhanced' hps like hortilux.

VG

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