help help help humidity

[original Blues]

Ok i have 20 blueberry clones 1 1/2 weeks under 140w flores then moved under a 250 watt hid for 3 days then under a 600watt son t. All looking well fed with canna coco a&b ph5.8 ec 1.2 oh and a sprinkle of mag sulphate as my previous grow fell went wrong with what i thourght was mg defiency. then over the last 2 days the leaves have started to yellow off the temp is 28c and humidity is 30% is this to low and can it cause this kind of damage





any advise would be great

 

[EvilTwin]

OB,
Nah, not humidity related. 30% is good for plants that size. Some people go higher but my house is usually lower and never a problem.

I see a little hint of Mg deficiency on one shot. never grown BB...is that a Mg deficiency prone strain? I give 1/4 tsp Epsom salts routinely and since you have some interveinal chlorosis, I'd up that to 1/2tsp/gal.

If you have further questions...try and give us more info please.
ET

 

[Flyguyd]

I would flush and feed lower EC see if they pull out of the yellowing. Obviously some lockout going on. Is that thrip damage I see in the first photo?

 

[original Blues]

yes i had a little problem with thrips so i throw some preditors in there last keek what a good job they did.

 

[*mistress*]

does not look like rh issue.

maybe iron (fe) lock-out/deficiency. maybe flush w/ 100% water, & apply iron supplement.
mag-i-cal has cal, mg & iron, seemingly balanced... there is also cheapo alaska start-up/transplant 2-1-1, which contains b1 & molasses. excellent shock/stress + iron/ca/mg revitalizer.

enjoy your garden!

 

[original Blues]

thanks for the replys guys well spotted flyguyd.
I didnt think low humidity would do that, but the guy at my local hydro shop placed doubts in my head. but i think i have gone a little over board mag sulphate I placed 2 tspoon to 10ltr but ive flushed and now spraying rizo 4-5 times a day fingers crossed any other ideas would be good

 

[*mistress*]

thanks for the replys guys well spotted flyguyd.
I didnt think low humidity would do that, but the guy at my local hydro shop placed doubts in my head. but i think i have gone a little over board mag sulphate I placed 2 tspoon to 10ltr but ive flushed and now spraying rizo 4-5 times a day fingers crossed any other ideas would be good

spraying plants 4-5 times a day???

why?

that will cause more issues than anything. how long does condensation remain on leaves?

what ph is the foliar spray?

foliar feeding 1 per day is a lot. more than that may be issue causing...

enjoy your garden!

 

[original Blues]

mistress, thanks for your comments but I dont think spraying 4-5 times is to much a day but is a max and to be honest its more like 4, we are in veg.

The ph is 6.2 but ive started to spray to try and get the goodness direct to the leaf where the help is needed. This has perked up the plants and the leaves have lifted. Under close inspection it appears the my infestation has not cleared up. A guy has put me onto a product called plant vitality plus which im getting to clear these pesky pests.

So the conclusion I think the preditors i got have helped but i need twice the amount and after spending 50 quid on preditors id rather spend 16quid and kill eggs and all the little fookers so I will give you a update on how this product works as ive heard and red on the forums its the dogs for pest control (spider mites & thrips)??

will find out soon will leave a update on this product

 

[HempKat]

I have to agree with *Mistress* that foliar feeding 4-5 times a day is excessive. As I understand it leaves can only avail themselves of certain nutrients, I know nitrogen because some nitrogen is available through the air. Really though thru the leaves is not the way plants were designed to feed nutrients. Leaves are designed mainly to feed thru light and convert that to starches, sugars and protein to combine with the water, nutriuents and minerals obtained thru the roots to create new growth. Now in your situation which does sound and look somewhat like a nute lockout condition causing difficiencies, the foliar feeds would seem to perk the plants up because it's getting something by bypassing the lockout at the roots.

Ultimately it sounds like you're trying to push the plants harder/faster then they want to go. Which is a perfectly normal and common problem amoung newer growers. They're so eager to have that totally awesome looking plant with the sweet budshots and the impressive colas. Thing is, not all plants are meant or even capable of that and whether they are or aren't you can't force it. All you can do is provide a stress free environment, a good source of light, good air circulation/ventilation and a balanced and steady normal diet of nutrients and minerals. If all that is in place the plants will do as good as they're able to do with the light available.

What generally happens though is that newer growers tend to think in ways that don't apply to a plant. Like for example they think they can make the dose of nutrients much bigger because the normal dose is such a small amount compared to a gallon of water. They think things like "I'll give it twice as much and it will get twice as big" as if the nutrients are some magic potion. What likely happens though is it's too hot for the plant, the plant gets burned, damaging the efficiency of the leaves and the plant grows less well because it's getting less light then it could.

It sounds like your issue started with the mag sulphate because you think you over did it. I assume that when you say that, it's because you know you gave a stronger concentration then what's suggested on the label? If so then yeah that could start the ball rolling, and if you didn't check the ph after adding that stuff then yeah it could throw your ph out of whack and bam, you got yourself nute lockout which shows as random nutrient deficiency issues in the leaves. Probably depending on how much of what nutrients each plant has stored in it's leaves. From your pictures it doesn't seem too bad whatever it is so just give it a good flush and get it back on a proper, ph adjusted diet the next feeding.

I would also consider on cutting down on the foliar feeds and limit them to just plain water. Foliar feeding imitates rain in outdoor growing. The plant being extremely efficient takes advantage of all resources by drawing water in whenever it can, however it can. That's true because in nature you don't get rain everyday, let alone 4 - 5 times a day every day. Anything can become too much, even foliar feeding. If you really want to do your best for the plant and in a way that is practical, find out where the strain your growing would consider home if it was growing on it's own and then track the weather of that area and only foliar feed on the days it actually rains there during the veg season. That's going to match up with the plant's genetic code on what to expect and be able to handle in terms of moisture thru the leaves.

 

[CovertCrops]

Hey OB, How much MG is in your nutes? I use canna aqua and it lacks MG entirely. Canna nutes seem to be notoriously lacking in MG. Your plants look like everyone else's plants who use canna nutes. Pale green with symptoms of MG def ,Or we see nute burn with MG def.

Often people see the MG def starting, they increase feed to compensate but if there is no MG in the mix the def progresses while the plants burn from too much of the other nutes. If you use RO water then add some calmag to your mix. If you use tap water supplement with epsom salt at 1/4 to 1/2 tsp per gallon. Good luck with your grow.

 

[*mistress*]

mistress, thanks for your comments but I dont think spraying 4-5 times is to much a day but is a max and to be honest its more like 4, we are in veg.

The ph is 6.2 but ive started to spray to try and get the goodness direct to the leaf where the help is needed. This has perked up the plants and the leaves have lifted. Under close inspection it appears the my infestation has not cleared up. A guy has put me onto a product called plant vitality plus which im getting to clear these pesky pests.

So the conclusion I think the preditors i got have helped but i need twice the amount and after spending 50 quid on preditors id rather spend 16quid and kill eggs and all the little fookers so I will give you a update on how this product works as ive heard and red on the forums its the dogs for pest control (spider mites & thrips)??

will find out soon will leave a update on this product

foliar feeding seems to works well @ 7.0+ ph.
leaves prefer slightly alkaline solution to get thru...

what is your rh, @ capony level, w/ 4x foliar spraying?

h202 @ 5:1-10:1 ratio in 1 liter spray bottle should eliminate most pests. every other day. should oxidize their exoskeletons. in separate sprayer.

enjoy your garden!

 

[original Blues]

foliar feeding seems to works well @ 7.0+ ph.
leaves prefer slightly alkaline solution to get thru...

what is your rh, @ capony level, w/ 4x foliar spraying?

h202 @ 5:1-10:1 ratio in 1 liter spray bottle should eliminate most pests. every other day. should oxidize their exoskeletons. in separate sprayer.

enjoy your garden!

I have the canopy rh at 60 % now at spraying once a day I have placed a bucket of water in the room open with a tank heater this has worked a treat.

Ill bear that inmind for the future but ive orded this plant vitality Plus

 

[original Blues]

I have to agree with *Mistress* that foliar feeding 4-5 times a day is excessive. As I understand it leaves can only avail themselves of certain nutrients, I know nitrogen because some nitrogen is available through the air. Really though thru the leaves is not the way plants were designed to feed nutrients. Leaves are designed mainly to feed thru light and convert that to starches, sugars and protein to combine with the water, nutriuents and minerals obtained thru the roots to create new growth. Now in your situation which does sound and look somewhat like a nute lockout condition causing difficiencies, the foliar feeds would seem to perk the plants up because it's getting something by bypassing the lockout at the roots.

Ultimately it sounds like you're trying to push the plants harder/faster then they want to go. Which is a perfectly normal and common problem amoung newer growers. They're so eager to have that totally awesome looking plant with the sweet budshots and the impressive colas. Thing is, not all plants are meant or even capable of that and whether they are or aren't you can't force it. All you can do is provide a stress free environment, a good source of light, good air circulation/ventilation and a balanced and steady normal diet of nutrients and minerals. If all that is in place the plants will do as good as they're able to do with the light available.

What generally happens though is that newer growers tend to think in ways that don't apply to a plant. Like for example they think they can make the dose of nutrients much bigger because the normal dose is such a small amount compared to a gallon of water. They think things like "I'll give it twice as much and it will get twice as big" as if the nutrients are some magic potion. What likely happens though is it's too hot for the plant, the plant gets burned, damaging the efficiency of the leaves and the plant grows less well because it's getting less light then it could.

It sounds like your issue started with the mag sulphate because you think you over did it. I assume that when you say that, it's because you know you gave a stronger concentration then what's suggested on the label? If so then yeah that could start the ball rolling, and if you didn't check the ph after adding that stuff then yeah it could throw your ph out of whack and bam, you got yourself nute lockout which shows as random nutrient deficiency issues in the leaves. Probably depending on how much of what nutrients each plant has stored in it's leaves. From your pictures it doesn't seem too bad whatever it is so just give it a good flush and get it back on a proper, ph adjusted diet the next feeding.

I would also consider on cutting down on the foliar feeds and limit them to just plain water. Foliar feeding imitates rain in outdoor growing. The plant being extremely efficient takes advantage of all resources by drawing water in whenever it can, however it can. That's true because in nature you don't get rain everyday, let alone 4 - 5 times a day every day. Anything can become too much, even foliar feeding. If you really want to do your best for the plant and in a way that is practical, find out where the strain your growing would consider home if it was growing on it's own and then track the weather of that area and only foliar feed on the days it actually rains there during the veg season. That's going to match up with the plant's genetic code on what to expect and be able to handle in terms of moisture thru the leaves.

Hempcat, you wanna live where i do the rain never stops lol. well ive now increased the RH to 60 and reduced the spraying to once a day. But I have to say that foliar feeding has its benifits especialy if youve usded VHO the increased veg growth is outstanding one to think about mate.

I wanted to note I have many grows under my belt with the same mother clones so I know how these ladies grow and how far I can push them in vert grows, soil, rockwool slabs in aqua trays and oxypots and what they like and never have I had problems like ive had over the last 2 grows I get the same problem and its driving me crazy.

Ive come on this website and I have become very set in my ways on how I grow and Its great for the feed back Ive had and the fresh ideas
I have been super carefull with the PH 5.8 may increase to 6 max I have been hand feeding and the numbers of thips are increasing by the day so this week they are getting nuked lol

The roots are all looking super healthy as well so I think ive got my eviorment just right I just sold a light rail so im purchasing a new rvk Lti 150mm to increasing the fresh air into the grow space and the plant vitality plus we should be back on track.

cheers for the advice I will let you know how I get on and Ill post a diary with pics of how i get on if I can get them to flower...