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Unknown autoflower!

2
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845
2 years ago
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2
Mastergrow 2x2x2
Indoor
Room Type
Defoliation
weeks 2-8
Soil
Grow medium
Perlite
Grow medium
Compost
Grow medium
Manure
Grow medium
11 l
Pot Size
0.6 l
Watering
Grow Conditions
Week 2
Flowering
160
cm
inch
Height
26
°C
°F
Day Air Temperature
8+ conditions after
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Grow Technique Usage
Defoliation
Technique
Commented by
Stonehigh Stonehigh
2 years ago
I discovered GW a couple of days ago so i am starting my first diary at week 7. Unknown strain but heh lets be honest, she is looking better and is far more resilient than my other 3!
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Grow Questions
Stonehigh
Stonehighstarted grow question 2 years ago
My first time monitoring vpd values on a grow. Day time vpd value : 1.5-1.6. Night time vpd value: 1.2-1.4. I think recommended value for mid to late flower is 1-1.3. I hit it at night but during the day temps going up makes my life difficult. How much off range is not good?
Solved
Other. Other
2 likes
Sciolistic_Steve
Sciolistic_Steveanswered grow question 2 years ago
Depending on the chart you look at, 1.5 may be great for a mature plant or it might be considered too high... early on for seedlings and such this is probably too much but they'll still grow fairly healthy if not as fast. there are ways to mitigate high VPD, like lowering concentration of nutes, since water uptake is increased you can still give it the same rate of nutes by reducing concentration. Anyway, while the concepts behind this are rock solid, i don't beleive there is a lot of reseaarch to fully flesh it out, especially specific research on marijuana plants and any variances it may have to the general reaserch down on other plants on this subject. So, as always ppl take a concept and run with it.... and not always with any evidence to back up what they say.. So, use the charts, but always let plant observations be the last say. If you cannot control the temps and RH, knowing VPD will limit it's usefulness... liek i said above you can react to high/low vpd by changing nute concentration in an ateempt to maintain rate of what the plant takes in. roots are not selective beyond what fits through semipermeable memebranes.. though there is some active diffussion for some molecules occuring too. otherwise it's just factors of osmosis.. conecntration gradients dictate flow. Think stomatas close in darkness? so the vpd at night may not be suprememly relevant or at least not as important as light hours (might want to google how stomata function just to be sure) i have a chart that shows .5-1.2 being in teh "green". i've seen others that show higher rnages like you mention... they both are doing the math correctly and look professional, but i doubt either has done any proper reseaarch with a proper baseline comparison. It's good science but i highly doubt anyone can be certain about what is "optimal" for the marijana plant species and genetics will likely vary quite a bit due to region the plant comes from or the mish-mash of genetics from multiple regions... consider it a good ballpark to start in and further refine through observing how the plant reacts... just like anything else we do. what's? too much? start approaching 2.0+ and growth slows in my exp with some vege plants last winter... when i reduced concentration of fertilizer (soilles, provided each time), i had a good reaction under bad VPD conditions. My RH was below 30%.. temps were high... it was high VPD and yield suffered due to slow growth and alotted time (schedule)
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bobbystone
bobbystonecommentedweek 32 years ago
😍 Good luck 💪
Stonehigh
Stonehighcommented2 years ago
@bobbystone, thanks so much bro 💚🙏
GrowingGrannie
GrowingGranniecommentedweek 22 years ago
Good luck with her!!
Stonehigh
Stonehighcommented2 years ago
@GrowingGrannie, thank you so much!
Kitties_and_Colas
Kitties_and_Colascommentedweek 22 years ago
Happy girls! ❤️💡🌱
Stonehigh
Stonehighcommented2 years ago
TeamQuality420
TeamQuality420commentedweek 62 years ago
Journey into the great unknown!!!! That is really cool growmie! May the force be with you 🖖🌌😂💨💥💥🤯
TeamQuality420
TeamQuality420commentedweek 62 years ago
Hey I also have an answer to you VPD question, I have never measured it nor even thought 2 minutes about it . To me it is only for large areas . Don't sweat the small stuff !! Just enjoy the ride !
GoodGiggles
GoodGigglescommentedweek 22 years ago
Happy Growing Buddy! 🍀