My leaves are dying

[jimmyd42]

As to root aphids, nothing supports this theory yet. There are simply no insects here. None. Not a single one in weeks.

We had a look at a root (not the affected plant), and they looked fine. I cant look inside the 7 gallon pots though and we cant move them out. I'll try a potato slice on the coco.

Can anyone even confirm that they have seen this coco mold before? is this really beneficial mold?

I cant find any pictures like from that mold online.

 

[jimmyd42]

We investigated the root zone a bit by digging into the coco.

The first roots become visible around 2-3 inches into the soil and there is no root ball just a few single roots. The medium is wet but not soaked. I couldnt see any signs of mold, fungus or bugs bellow the surface.
We tried to lift the plant at the stem base but again it looked like it wouldnt grip a root ball but the plant was coming out of the pot.

Ill have a look at a sample of the coco under the microscope later.

 

[Buddler]

Judging by the first pic id say the bulb is to close 18 inches 1000 watt scorching those leaves. those leaves are hooped. might as well pluck them dim down the ballast. canna is great coco nutes shouldn't need calmag too much N if any thing use Epsom salts..

 

[jimmyd42]

The leaves on the backside not facing the light have the same symptoms, so I doubt its the light.

 

[ozzieAI]

As to root aphids, nothing supports this theory yet. There are simply no insects here. None. Not a single one in weeks.

thats exactly what i thought as well...but they were there...

there is no root ball just a few single roots

really...then you do have problems...when i had RA i could pull the plants out of the pot bringing only a small ball of roots at the base of the stem...about the size of a golf ball, my plants were small though. the roots were brown and didn't look healthy at all

 

[ozzieAI]

To fight root rot only, and make no mistake, you CAN overwater coco, Water/feed 4 times with 30 ml of 3% Peroxide/gal. Water, then wait till the weight of the pot/medium is noticeably lighter before you water again. Use a good root stimulator. After the 4th peroxide treatment, reinoculate the medium with EWC ACT or an inoculant product like Great White, Plant Success, or some such product. Do this every week. Use an enzyme product like Hygrozyme. You can increase watering interval as roots re-grow. Foliar is very beneficial while re-growing roots. Good luck. -granger

this is good advice here...i would throw some neem oil in the mix as well

 

[whadeezlrg]

root aphids...they cause crazy lockouts(purple stems?) and many times the symptoms look like incorrect ph, usually you will start getting yellowing leaves with blotches of dead leaf tissue here and there...run-off will start to smell like rotten eggs, they won't drink very much, roots seem fragile etc.

bayer citrus tree & shrub root drench and TONS of sticky traps(blue i beleive) will have them gone in no time.

also looks like a little bit of light burn...maybe you just need more air blowing from the bottom of the bulb

 

[jimmyd42]

We could identify the problem as magnesium and a bit of potassium deficiency.

He increased the mag-cal from 3 to 10ml of mag-cal per gallon which fixed the plants deficiency, sadly tons of leaves are dead by now.

Thanks for the help on the forum!

 

[Medicgray]

I'd still do a few days worth of peroxide 35% 5ml/gal. Check your ph meter too. I found 5.5 in, feed at 1/2 weight of fully watered pot works for me. I had probs like this once... Chased my own tail for a few weeks. Ph was biggest part of it. And not a good runoff. Jm2cent