Cupping of leaves

[Abzon]

I have tried several things to correct the problem after reading several other post.1. Moved lights 2. Low Mag. added Epsom salt 3. Heat trying to balance temp better 50-85f. right now day to night, lights areon 18/6 Greenhouse light supplemented by overdriven fluorscents

 

[Storm Shadow]

Broad Mites ...

 

[Avinash.miles]

it does look like Broad Mite damage...... could be, ur gonna wanna get into integrated pest management, rotating cycles of different pesticide/ovacide/preventative measures..... sounds nasty but it doesnt have to be.

 

[Abzon]

There are no pest at all in the greenhouse anywhere. I work in Pest Control and have all the materials needed to treat for pest, but after very careful inspection I found no pest of any kind.

There are 5 plants all started the same time and appears to be only the newest shoots. It appears to not be getting worse.

 

[Storm Shadow]

Break out the Microscope dude... your about to add some stripes to your Pest Control Exp...

 

[Vash]

Looks like BM damage to me also, and if it is, detecting them is not an easy thing to do. They're nothing like spider mites. This is a different ballgame, altogether. I needed at least 60X to pick up on them. Good luck, Abzon.

 

[Devilman]

Hmm, I had exactly the same look to some of my plants late on in flower, is it always Broadmites that cause this? Or can the kinda "canoe shape" occur due to other things such as heat stress?

 

[medicalmj]

Looks like BM damage to me also, and if it is, detecting them is not an easy thing to do. They're nothing like spider mites. This is a different ballgame, altogether. I needed at least 60X to pick up on them. Good luck, Abzon.

A dissecting stereoscope at 40x (4x objective and 10x eyepiece) works perfectly due to the wide field. I added my own top light tho. Two hundred bucks...

 

[medicalmj]

I work in Pest Control and have all the materials needed to treat for pest,

Then start spraying with Pylon...Safe for veggies, translaminar, and one of the best miticide on market for these guys.

 

[Avinash.miles]

ya. usb microscope to computer screeen ftw against broads and hemp russets....

visual inspection doesnt find the pests, just the damage...

also could perhaps be Vapor pressure deficit? VPD....

 

[Abzon]

Thanks for all the help everyone . I will try some Avid on them and see. If it does not work I do also have a material with the same active as Pylon I will try.

 

[Vash]

Avid is what worked for me.