Pretty girls but yellow veins

[AutoMisery]

Hello guys, ive got another grow going now with 3 orion F1 autos.

The 2 important ones are in 25l fabric pots with plagron growmix.
The small one is an experiment to see what a auto in 1l of soil with only water would yield.


Environment 20-25 night-day and around 35-50% humidity and a mars hydro ts1000.

They have never been fed since the soil is rich and when testing the runoff after 5l of plain tap water ph6,8 it gives runoff ph6,5-6,8 with 1700ppm(3,4ec)

So I thought it would be interesting to ask you guys if I should defoliate to lower chances of budrot and what yall think about the yellow veins?

 

[Smokey_LaFleur]

Sorry, I dont really see anything wrong. Other than the small one. They look good. Keep some good airflow going, and leave as many leaves as possible. Id let em be.

 

[AutoMisery]

Sorry, I dont really see anything wrong. Other than the small one. They look good. Keep some good airflow going, and leave as many leaves as possible. Id let em be.

Ive got 2 fans from the ceiling blowing from opposite sides down onto the canopy.

But the bush is pretty tight so im not sure if alot of airflow actually reaches the middle

 

[Smokey_LaFleur]

Maybe move one of those fans down low, right around pot level. The other one just above the canopy. Looks like a tent, you have an exhaust fan? With your humidity levels, you should be fine.

 

[LoveGrowingIt]

Veinal chlorosis is difficult to diagnose because there are several possible causes. It's also hard to find references. Iron deficiency can cause it but it's more likely due to a pH issue that inhibits uptake of iron. Excessive potassium can also block uptake of iron (and magnesium).

 

[carlosescobar]

Personally i would take off some of those leaves , especially the ones blocking light from bud site...BUT if its an auto in bud, i would just do one or two at a time so you dont stress it too much...
I would also take off small buds at the base which are on small stems....i noticed on my last grow all the smaller buds , if they were on a thin stem , they never bulked up . i think people call em popcorn buds.

 

[AutoMisery]

Personally i would take off some of those leaves , especially the ones blocking light from bud site...BUT if its an auto in bud, i would just do one or two at a time so you dont stress it too much...
I would also take off small buds at the base which are on small stems....i noticed on my last grow all the smaller buds , if they were on a thin stem , they never bulked up . i think people call em popcorn buds.

Yeah the thing is there arent any fan leaves blocking a thick main budsite at the top that would get decent light.
I could remove alot of big fanleaves that are getting light at the top so there would be more penetration deeper into the canopy but I don’t think that would maximise yield since those smaller buds inside the canopy will never really hold more than 1-2g each even if I give them some more light.

My issue right now is more the overall “bushyness” that would restrict airflow but im not sure if mold is really a concern in a controlled environment like this one…?

 

[AutoMisery]

Veinal chlorosis is difficult to diagnose because there are several possible causes. It's also hard to find references. Iron deficiency can cause it but it's more likely due to a pH issue that inhibits uptake of iron. Excessive potassium can also block uptake of iron (and magnesium).

PH is a bit towards the high side on the right one (runoff ph6,8).
I heard iron is less efficiently available with soil ph higher than 6,5.

But from everyone’s reaction there doesn’t seem to be an actual problem that needs to be solved

 

[AutoMisery]

Maybe move one of those fans down low, right around pot level. The other one just above the canopy. Looks like a tent, you have an exhaust fan? With your humidity levels, you should be fine.

One of the fans is on top of the tent blowing in fresh new air, the other one is needed between the canopy and the lamp so the branches sticking up wont overheat.

Ive got no exhaust fan since the environment is pretty stable and good now.
I do have a big ventilation hole in the back so there’s a hole up top where new air gets blown in and then at the bottom an escape for it

 

[AutoMisery]

Buds grown a good bit.
Plant on the right got skinnier buds though
Now its got some brown spots on yellowing fan leaves.

Doesnt seem like normale scenesence but since theyve got about a week left I think it can just cannibalise its leaves untill harvest.

Idk

 

[Ninjadogma]

Veinal chlorosis is difficult to diagnose because there are several possible causes. It's also hard to find references. Iron deficiency can cause it but it's more likely due to a pH issue that inhibits uptake of iron. Excessive potassium can also block uptake of iron (and magnesium).

I interpret it as the plant asking very politely for easier access to magnesium and iron, so you can assess whether to do it through ph correction or supplementing based on your data. You're pouring in tap and it's coming back 6.5-6.8 that should be a healthy range but it tells you the soil itself is a lower acidic value than that. This is one of those things you may just decide to let it ride because it's not really in jeopardy and you risk moving it the wrong direction with the wrong corrective move.

Bigger concern is that 3.4 EC. If you have hard water you've got some non nutrient EC in there but you want to dilute it down to 2.8 and no higher than that at any stage of the plants life unless you're supplementing CO2 or something. And from this point forward, based on stage (guessing around week 6 of flower), you want to start tapering that number down by about 0.2-0.4 with each subsequent feeding until harvest. You want to follow that bell curve demand. If you leave the EC high you'll likely start losing your fan leaves, pistils may brown prematurely, buds may not stack good, etc. and you'll watch it slowly get unhappier and unhappier, especially with the demand dropping as it completes its life cycle.

 

[Ninjadogma]

Buds grown a good bit.
Plant on the right got skinnier buds though
Now its got some brown spots on yellowing fan leaves.

Doesnt seem like normale scenesence but since theyve got about a week left I think it can just cannibalise its leaves untill harvest.

Idk

Didn't realize you were that close to finish. Kudos! You're right it doesn't look like normal senescence but about 80% of growers are in the same boat. That high EC you were running likely came back to bite you. Don't worry it should be plenty dank, get a good dry and cure on it after harvest and you'll be hitting it like a boss.

 

[AutoMisery]

Didn't realize you were that close to finish. Kudos! You're right it doesn't look like normal senescence but about 80% of growers are in the same boat. That high EC you were running likely came back to bite you. Don't worry it should be plenty dank, get a good dry and cure on it after harvest and you'll be hitting it like a boss.

My EC last time I measured runoff was 1200ppm and 1400ppm for the smaller buds plant.
Still very high but im thinking it might be because i dont collect much runoff so its probably just alot of salts that collected at the bottom.

Idk, just hoping that I get another week so i can finally get a decent harvest

 

[GNick55]

Buds grown a good bit.
Plant on the right got skinnier buds though
Now its got some brown spots on yellowing fan leaves.

Doesnt seem like normale scenesence but since theyve got about a week left I think it can just cannibalise its leaves untill harvest.

Idk

looks like a few weeks from harvest, are you using something to look at trichomes?
really there’s no such thing as senescence indoors as harvesting comes waaay before senescence, “fall colours” indoors means incorrect feeding or removal of nutrients on purpose or ph manipulation or manipulating temperature,..

 

[Ninjadogma]

looks like a few weeks from harvest, are you using something to look at trichomes?
really there’s no such thing as senescence indoors as harvesting comes waaay before senescence, “fall colours” indoors means incorrect feeding or removal of nutrients on purpose or ph manipulation or manipulating temperature,..

Just noodling this over and I guess youve kind of spelled it out, senescence doesn't happen naturally indoors but a grower can induce it, and if not induced it was either accidental or its a deficiency, not senescence. Or maybe a better way of putting it, controlled deficiency... and most of the time it's not controlled at all

 

[AutoMisery]

looks like a few weeks from harvest, are you using something to look at trichomes?
really there’s no such thing as senescence indoors as harvesting comes waaay before senescence, “fall colours” indoors means incorrect feeding or removal of nutrients on purpose or ph manipulation or manipulating temperature,..

Huh wow this is the first time someone tells me that.

Sometimes I snip off a piece of sugar leaf in the bud and check it with a microscope, its about 60% cloudy and 40% clear

I thought you were supposed to let them run out of nutrients around the last 2 weeks of flowering because the cannibalisation of the leaves makes the bud taste better… or is that just bro-science?

 

[AutoMisery]

Just noodling this over and I guess youve kind of spelled it out, senescence doesn't happen naturally indoors but a grower can induce it, and if not induced it was either accidental or its a deficiency, not senescence. Or maybe a better way of putting it, controlled deficiency... and most of the time it's not controlled at all

My day temps are 24-25 and at night 20 so I thought that would probably contribute to things.

Also I havent given a single extra dose of nutrients since the leaves stayed dark green and runoff EC was always pretty high.
Plagron growmix is a pretty hot soil.

Just to let ya know I’m not nearly experienced enough to be doing controlled deficiencies like you said


(The little yellow plant at the bottom is an experiment where im testing how much a auto can yield in a 1l container with no added nutrients)

 

[AutoMisery]

Update:
Day 65 now
Buds look more dense now.
Lots of white trichomes.

Fan leaves are quickly dying and purple colours are showing on the biggest buds.

Do they look ready to harvest?

I can only put sugar leaves under my microscope.