dittoit's just nearing the end, only two or three weeks left, try the recommended light feeding. Some will put on their bulk in the last couple or three weeks
You have plenty of time for that plant to fatten up. Just by look you have more like 4 weeks left. What strain?oh and i forgot to mention that is indoor with 250 W HPS
70% humidity In late flower???? This sounds like and invitation for mold. alot of people use 35-40% humidity In flower. your temps are on higher end If you can bring temp down to 72-75f you would be In the perfect temp/rh zone imho.Alright brother .... It looks like youre doing things can directly for the most part. Like I said, most plants will get yellow towards the end alittle early though yours is doing it a little early perhaps......i noticed your humidity is very low for that temp. At these times, towards the end, little stress will exaggerate any little deficiency you might have, and may show worse on the plants! Raise your humidity to at least 60s (70s with goooood air circulations) right now So that the girls can drink and eat better ... high temps and low humidity lead to closed stomata on the leaves and reduced perspiration .... and THEN you can lower it to where it is now towards the very very end (when theyre done fattening up) so that the low humidity help stresd them and increase trichome production. When the humidity is very low for the temp, the girls cant eat or drink like they want to and deficiencies will show faster especially if the girl is fattening up n has high demands for those nutrients at the moment ..... this would be my guess right now. I suggest you try to keep your humidity as close to VPD as possible and read a little about VPD (Vapor Pressure Deficit) and watch her bounce back
Good luck brother and let us know how things go
Check out my new QuadStrain grow :
https://www.rollitup.org/index.php?threads/916619/
and my previous TriStrain grow :
https://www.rollitup.org/index.php?threads/883569/
I agree with you brother. Totally agree.70% humidity In late flower???? This sounds like and invitation for mold. alot of people use 35-40% humidity In flower. your temps are on higher end If you can bring temp down to 72-75f you would be In the perfect temp/rh zone imho.
Its one of those many ways to skin a cat things. I keep my humidity at 40% all the way through flower with good results. Another great grower on here @afganking keeps his flower room at 35% through flower I believe with awrsome results.I agree with you brother. Totally agree.
Humidity in the 70s late in flowering is like you said pretty much asking for trouble. His best bet is to LOWER the temps and increase humidity at least a little. My point was that for THAT high temps his humidity has to be that high in 60s n 70s. Attaching a vpd chart here for future reference.
I used to think running lower humidity in flowering is better. Its better only to prevent mold and to increase resin production towards the end. However, i learned that while the girls are actually growing and producing bud, you want the humidity to be within the good VPD range to allow the plants to breathe and thus uptake water.
So assuming hes keeping the temps that high, he has to raise humidity and improve air circulation to avoid mold. Or better yet lower the temps and increase humidity just a little since the girl is (i think based on the pic) still shooting out white pistils. Then later when she slows down and shes all fat, lower the humidity in the very last week to increase resin production.
I had this same issue very recently. The girls slowed down their water and nute uptake ALOT when the humidity dropped. I had to lower my temps a little and increase the humidity a little before they started drinking again.
Anyway sorry for the rant. Long story short OP should make sure the temps and humidity are within a range the ladies like and hopefully we see her bounce back
Check out my new QuadStrain grow :
https://www.rollitup.org/index.php?threads/916619/
and my previous TriStrain grow :
https://www.rollitup.org/index.php?threads/883569/