Thanks for your reply, I have just increased my grow space from tent space to a room and it's pretty full I'm maintaining good VDP but my humidity is around 60% and just going into the second week of flower. It's the bud rot threat and PM I'm a little concerned about.
How are you all talking about vpd and humidity like there different aspects?
vpd is humidity x temp so regardless of your humidity that means nothing to vpd unless you state your temps or kpa
Your saying that vpd is good but humidity is at 60? That is explaining that your temp range matches the safe route on humidity currently didn’t really state anything but then you all blast on about the rot and stuff?
I feel like many haven’t read or understood vpd properly or the reasons why
If VPD is too low then nutrients are not taken up with water as successfully which can lead to mineral deficiencies, such as calcium for example, and lower growth rates in general. Low VPD is also associated with highly saturated water in the surrounding environment leading to moulds and root rots in plants. If, however, VPD is too high then plants will have high transpiration rates causing heavy water uptake and along with this water higher nutrient uptake leading to toxic levels being present in plants resulting in rot.
if your vpd (humidity vs temp) is in the green zone meaning it doesn’t matter what your humidity is as if it’s right you DONT get rot at all that only sets in to damaged deficient or locked out buds it finds weaknesses it doesn’t outright attack unless it has the given grounds to vpd outa range the plant can’t protect its self
try going out in the snow and having a fight naked you’ll freeze then put 10 layers on and try again easy too much u fall over you need just the right amount of layers..
aslongas there is proper airflow a fan moving air no stable patches your humidity can go to and have flowered at 85 terrines increase if you dare haha but it’s better to increase and decrease humidity when you can’t manage temps too if they go high 32c you need to raise the humidity accordingly you can’t sit there going I don’t want to go above 45 cause I’ll get rot if the vid chart says u need to raise it YOU RAISE it god damn if you don’t your gona be in negative or positive kpa and cause lockoutsthat WILl lead to rot cause you caused an illness in the buds worrying about humidity values you was once’s quoted for beginners when your trying to follow advanced growing practises that rely on control of these factors
humidity doesn’t equal rot improper airflow and shit conditions in vpd management do
The charts there fuck the rest of you need to raise it raise it the idea is you keep the pressure right in the leaf or you get problems
I run organic I compost on my soil I throw rotting veg down till the end I have fungus growing all over my soil big hairy 3inch webs wet and dripping bugs and spiders you’d have a heart attack in my room and guess what I don’t get rot from my soil lol it increased my yields
