Medigrow
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I remove all leaves that remain under the grid after two weeks of flower or longer but that one's obvious I suppose.
THE RESULTS ARE IN!!
This is the time you all have been waiting for, the product has been dried and has started the curing process. Overall I would say the test is a success, and I think I've done a good job at keeping all things equal. However, the results were not what I expected.
And the winner is.... Control group! (no defoliation)
Control group:
Plant 1: 142.5g
Plant 2: 148.0g
Plant 3: 133.0g
Total: 423.5g
Defoliation group:
Plant A: 137.5g
Plant B: 116.5g
Plant C: 130.0g
Total: 384.5g
Total yield 808 grams, 1.56g/w (average power draw during flowering)
Control group also had bigger flowers, less larfy shit, so it was easier to trim and has a better bag appeal.
My conclusion is, pruning plants for increased light penetration (during week 2 flowering) decreases yield. Mind you, this doesn't prove that pruning doesn't work to increase yields, and needs further studying and testing done using different techniques.
Next time I will be conducting a test of the lollipop technique.
Overall, I'm really happy with this grow, I smashed my goal of achieving 1 gram / watt, using my new "quantum board" lights, and I highly recommend these lights to anyone else.
Discuss, argue, point to me what I did wrong, so I can make better testing in the future.
Thanks for sticking with the ride! :)
Hey @FatManatee I'd say this is the best controlled trial I have seen on any forum yet re defoliation verse control. What you should do is a summary of the trial re substrate type, genetics, nutrient regime, light wattage/type, flowering period from start to finish, level of defoliation and approach to defoliation (e.g. percentage of leaves removed from where?) and outcomes re weight to tidy up and finish the whole thing off (a summary). I'm actually going to cite your trial in a new book I'm writing if that is okay (??) and link to this thread. I may also publish online citing the trial if that is okay also. I have to say that after wading through forums I have come across loads of defoliation threads but the methodology was highly flawed in all cases - whereas your methodology was pretty decent and certainly gives reasonably accurate data that growers can trust. Again nice job man. Always good to see a grower approaching things the right way re research. PM me if you want to chat.
Me to I also notice that highering the light frosts them up the last few days to a week. But I ain't running gavitas which you have to run high in my opinion anyway.shedhead out.No. Im saying the pumping with nutes would hurt quality.
And when i used to sell to the dispensary i had to submit samples.
But we found the opposite about thc concentration.
I lower my plants away from the light a few inches as they ripen. Increases potency and flavor/smell in my experience with hid lighting.
Lol, chubby dolphin:)Call me crazy, but I feel like an organism evolving over millions of years wouldn't purposely do so in a manner to retard it's ability to survive and flourish(shading it's reproductive bits and making them grow smaller/poorly).
I've tried this myself on a few plants and never managed to increase yields.
Also, bang up grow there ya chubby dolphin. Well done.
when growing inside you can/must defoliate in relation to grow space and strain growing - no way around it - FAN LEAVES MOST OF THE TIME NEED TO BE REMOVED--- feed after any defoliation
Call me crazy, but I feel like an organism evolving over millions of years wouldn't purposely do so in a manner to retard it's ability to survive and flourish(shading it's reproductive bits and making them grow smaller/poorly).
Yea ! when it comes to defoliation many different ideas/thought - but basicly one shouldn't remove any leaves unless dead, ect the big fan leaves are need by the plant - I total agree with you but sometimes one needs to remove someI think you may have it backwards. Most of the time there is no need to remove leaves.
Proven in this thread and in my personal experience. And it is just another tool to use if needed.
I get decent buds down low but nothing close to yours, but i also fill my canopy so it's like a wall, I suppose I'll take some pics and post some shit, its been awhile and typing is for suckers.I think indoors it is more important to break apical (top flower) dominance and train the plant for the branches to stretch up for more or all tops than to remove leaves. That is only neccessary when there are stale air and humid pockets forming between leabes and plants. Air flow not light penetration is the real reason defoliation can help.
But indoor light is distance limited unlike the sun which also moves across the sky lighting plants from all over.
I have shown many 2-3’ tall bent plants with all their leaves intact at harvest quality buds grown down to the bottom. Even the flowers completely hidden by the canopy can get huge.
Plenty in my thread link signiture
I get decent buds down low but nothing close to yours, but i also fill my canopy so it's like a wall, I suppose I'll take some pics and post some shit, its been awhile and typing is for suckers.
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