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1st grow, 1 plant. WHAT ARE THIS WHITE MARKS ON LEAVES???

S

swarrrm

Member
You really should give some info when asking for a diagnosis, it's not as simple as look at a pic and diagnose usually.
I'm guessing over feeding and possibly thrip damage.
Flush/look for pests
 
K

krompir

Member
OK.Sorry for that . This baby was overfert in previous soil ( too strong soil). I transplanted here few days ago i new soil with much less nuts in it and the soil PH is 6.5, i water them 2 times a week with water PH 6.5. Air humidity is 40-50%, temperatur is 25-27 degrees celsius when light is on and 20-22 when is off. Im adding no nutes .
 
K

krompir

Member
Ill see if there is gonna be more of this, if not im OK :) .Strange that PM apeard here , becouse air is dry almost all the time at 40% rh , sometimes even less, temperatures dont go under 20 degress celsius(when light is off) and the 120mm fan is blowing in the plant.

edit: Could it be becouse of to much spraying the leaves,becouse i spray it like 3 times a day? Is that too much,and that could be a reason that PM apeard?
 
O

olderthanbefore

Member
Are you getting some of the leafs wet when you water, especially on lower leafs?
It does appear to be powdery mildew. Humidity in the lower part of the plant will be much higher than room humidity, and if your getting a few drops of water on them; just sayin.
Its so slight its not likely to become a major issue, but I suggest get a good air filter, and I also noticed you have a slightly high pH. Drop down to 5.8 - 6.0 and the brown edges and spots will disappear.
Good luck.
 
K

krompir

Member
thnx for the answers;).

Paladin420 will the PH of soil lower if it water them with PH 6.0 water?

sorry for my crapy english:)

edit:So just a few drops of dish soap in gallon of water will do the job? nice one
 
paladin420

paladin420

FACILITATOR
Veteran
krompir said:
thnx for the answers;).

Paladin420 will the PH of soil lower if it water them with PH 6.0 water?

sorry for my crapy english:)

edit:So just a few drops of dish soap in gallon of water will do the job? nice one
Click to expand...

You want to check the runoff water for a proper PH readin IME..what come thru will give information on what is happenin in your soil..

Read that whole thread before you spray anything on them little gurls

Sorry for my crappy typin..Vonforne thinks it sux also
 
K

krompir

Member
This Eagle20ew is the stuff that cant get in our country.So i think ill give a try with some baking soda and few drops of dish soap.First ill spray only one leaf too see what happens.And ill upgrade my ventilation with one more 120mm pc fan blowing in the plant.
 
H

Hydro-Soil

Active member
Veteran
krompir said:
This Eagle20ew is the stuff that cant get in our country.So i think ill give a try with some baking soda and few drops of dish soap.First ill spray only one leaf too see what happens.And ill upgrade my ventilation with one more 120mm pc fan blowing in the plant.
Click to expand...

Ok... you should really re-read that entire thread on PM. You seem to have missed some info there.

If you cannot get Eagle20ew... get a comparable product with the same active ingredient. You may have to do some math to find the right concentration but it will be loads better than 'slowing' it with baking soda.

A really good way to keep PM out of your grow (after killing it in your current plants) is to use pollen/allergy type filters on your fresh air intakes. If you plant is just 'in' your house, that will be a problem since your house is probably infested with mold spores from outside.

One thing that can help is to find where the PM is growing on outside plants upwind and get rid of them. Or cure them.

I grow in low RH... about 20% humidity so PM is much less of an issue unless I artificially raise the humidity. I would recommend a de-humidifier if you'll be doing late flower when it's 40% or higher in your area or the PM will be out of control.


Please re-read the entire PM thread... there is a LOT of great info on how to deal with PM until you can eradicate it.

Stay Safe! :blowbubbles:
 
K

krompir

Member
Dread i was asking my self a same question:)

Hydro-soil thnx for advice. My RH is almost al the time under 40%, and ill do my best to prevent this bastards:)
 
pinecone

pinecone

Sativa Tamer
Veteran
krompir said:
This Eagle20ew is the stuff that cant get in our country.
Click to expand...

Eagle20 is nasty stuff anyway. In US you can use it on fruit trees, grapes, and ornamentals. It is not approved for use on other food crops. Personally, I'd chuck plants before I used it.

There is a product called Serenade that is safe and some have found to be effective against PM. It is basically a bacteria that out competes the PM. It is cheap and available at many nurseries. I think I had a bit of PM this past summer and it was cleared with the Serenade.

Pine
 
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