Help from MI brothers - seen this before?

Bad things happening to Kush type strains, doesn't effect others very much. At first I thought it was ph probs, discounted that. Very little nutes in last two weeks. Into week 5, has not affected buds. Grow in soil. Anyone one know what this is? It is not a bug and it doesn't move. I've been able to detect this on the under side of leaves in the last few days. The plants have been going down hill for about 2 weeks (that's when I began noticing a problem). I would try the MSU extention, but the last person that went there for mj related problems was not real welcomed. Here's the picks. Wish Prof PS was still around. Thanks in advance. (hope this comes out, first time trying this)

phosphorous and calcium deficient-

Are you scouting at 100x plus? It kinda looks like Broad mites if its not some mind of lockout. What soil do you use?

That pitting looks like broad mites, as does the leaf damage, I think I see a yellow one in the third picture from last south of the middle and towards the right end of the frame.

I know this from experience and must second HGK

Based on the size of the little white trichomes in the photo, that yellow mite in the last pic looks like a perfect match for a broad mite

TonightYou said:

That pitting looks like broad mites, as does the leaf damage, I think I see a yellow one in the third picture from last south of the middle and towards the right end of the frame.

I know this from experience and must second HGK

Click to expand...

If you can find a shop that's still got it get some wipe out. Or get yourself some avid and take care. Of they are in bloom you can really just limp then along and the hit EVERYTHING as soon as you chop. That's how I got rid of mine.

This whole thread reminds me to go treat veg just in case.... It's gettin cold outside fellers our gardens are little oasis to these bastards. Good time to double check.

These pictures are at ~200x. I've seen eirouphydes (spelling, very small mites that cause the galls on leaves here in mi, like fruit and pine trees) with this scope (too small even even make out with a 100x scope), to have an infestation with this type of damage, the mites were literally crawling all over the place, plus all the plants in the grow were being attacked. FFOF is the soil, I've ruled out ph, they've been flushed at least twice, ph checked.

good thin you didnt just spray AVID?-

sorry guys. just cant get behind it. i think its reckless.

Avid can be used responsibly, and science explains why. I would agree that its better to not have to use it, it is an option to use at or before flowering. I'd try a less chemical approach but I'd be lying if I said it would get rid of these fuckers as well as Avid or another miticide.

Are you using a digital scope? That doesn't seem to be 200x, but that pitting and the little yellow guy is definitely a mite. I've found digital scopes especially cheaper usb ones to be inferior in measurement when compared to an old fashioned lenses micro scope.

ETA: check many more of your leaves. I'd suspect you will find them on healthy appearing leaves. That leaf is usually the aftermath oce they are done with it and moved on to greener pastures.

I found mine mainly in between the thick support veins in the leaves. Like where they come together at the stem of the leaf. Hiding I there. They are smart. I spent 5 months battling "deficiencies" and "ph issues" then I finally found one. A fully loaded male is just a little smaller then a normal spider mite so they are harder to spot but these guys don't run in open groups all over the plant either. The males harvest the females a keep them in harems stored away nicely somewhere, sometimes up to 20 females on their backs to help spread their plague.

They suck and by the looks of those pics you will work your way to avid or wipeout soon enough.

Notice all the dead spots are along the support veins. I got some K deficiency in a few plants right now from ph and the dead spots are all right down the strip of meat on the leaf between the veins.

Idk im no expert but your plight feels very familiar to what i went through before sadly.

Gotta again second HGK, in fact he steered me in this direction before. I thought I had some deficiencies or something, and attributed the damge to everything but these bastards. Spider mites have nothing on these dope eatin insects.

Its a long battle ahead and ya may as well slash and burn any flowering plants, clean your area and nuke the fuckers. Use a miticide on vegging plants and start anew. That's what I did, and avid knocked those fuckers dead.

Btw I tried every thing under the sun and you may as well save money and frustration by doing it right the first time.

What's the humidity like in the room and what type of containers are they in?

Definitely feel free to exhaust any and all avenues you want too before taking any drastic steps but in the end you will prolly find the buggers some where. I wish I could find the MI thread when I got em it would be pretty pertinent here. Over a 2 weeks time I was following someone here who had "deficiencies" and all of Michigan's brainiest came out to help. After about 10 days they figured out it was mites and then so did I lol. It was terrible. I really almost cried. Nothing would kill those fuckers either. Wipeout is all that did the trick.

Ps. Tonightyou, the active ingredient in wipeout is simply avid. Heard it from the horses mouth. Just pre diluted to a safe level.

Ah makes sense. Thanks my friend. I ended up buying 2 ozs which will last a very long time for about $40 on Amazon. I put probably less than .5ml (ppipette barely sucked up much) for a dedicates spray bottle which lasted three treatments 2-3 days apart. No sign of them since and I've literally gone over every inch of the plant.

Thanks for the input. I've spent the last hour looking everywhere on the plants that are distressed and the ones that show no sign of anything wrong. I have not seen one living thing. I assume that these broad mites move like any other pest? All the different mites I've seen can be seen moving. The plants that are affected have kush in them. Plants right next the the affected plants, non-kush plants, look great. The buds are not affected in anyway. From the bad mite stuff I've seen, buds are just as affected. 3 gal plastic pots, humidity ~45% to 50%, temperature ~ 80F.
Yes I looked in all the placing you mentioned, even non-affected leaves.

http://pogenetics.com/?page_id=389

in the pics of the plants they show thats what they look like when its getting really really bad. if you look at the leaves you can see all the little dead spots where ever you can get a glimpse in between the curled up edges. they look like little dots all down the veins like yours. these guys are less then a half a millimeter long and the females are even smaller.

i hope to whatever god it is that rules this rock that you dont have em because if they go unchecked plants will simply wilt and die. i lost 2. at 100x they are about the size of a spider mite to the naked eye. i usually scope em out between 60-100x and just look for any little round pimple looking abnormality and then zoom in to 200x and they should be apparent. i guess even at 100x they are a little more noticeable then a pimple but these guys are pretty friggin small. SOOOOOO MUCH smaller then spider mites. dont go into the grow shops askin either they will runaway makin a cross with there fingers..... (not even joking real life experience lol)

Are you letting the soil dry out and then watering?

I can't see this being mites of any kind. Once you get them you know it. You would have seen them in the pics (Great pics of the affected area by the way!) I have seen root rot cause this look as well from the roots being wet constantly. I could be way off but that's what it looks like to me.

That necrosis leaf can be caused by anything at the end of the day, but the giveaway for mites is that pitting. Plus I see the little bastard. When they suck on the chlorophyll, it leaves a toxin in the leaf causing it to eventually become necrotic. At this point when the leaf is that damaged, the mites move on to a new leaf/plant.