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Nute problem or pest dmg?

Moco

New member
Hi!
I have three lowryder 2 on my terrace in Spain.

They have been growing for about 6 weeks now, 3 weeks flowering more or less.

After fighting pests the whole time ( occasionally watering with neem as well as foliar feeding), I noticed these spots the other day on the larger fan leaves on the middle of the plants. These marks usually start in between the veins and towards the back of the leaf, but not always.

I ask this because I am not sure if this is just damage caused by bugs or if it is some type of nute problem. It does look like something has just eaten the chlorophyl off the top of the leaf and on the underside there isn´t much sign of damage. I looked at the guide here, but I couldn´t tell because it also looks like a Potassium or Mg deficiency.

Anyways some info:
Soil: Bio Nova (prefert for 3 weeks)
Nutes: Plagron Alga Grow (given twice at half strength so far)
Plagron Bloom (given once at half strength)
Watering: watered every 3 days more or less, when the pot is light and/or the soil is dry again.
Sun: Close to 11 hours of direct Spanish summer sun.
Pots: painted white
PH: I mix my ferts, let them sit for awhile, and then adjust the PH to 6 before watering.
RH: The humidity here is low.

I recently watered with the grow nutes at about 1/2 the recommend dose because I noticed there was a N def forming as the stretch finished, but the marks were already there on the leaves before hand. They were, however, not as pronounced as they are now.

I also attach a photo too.
I hope someone can help me. I don´t want my plants to die jeje.

 

Blackvelvet

Member
You don't need the grow portion...your just not ferting enough. You have full intense sun! You should apply weak ferts with every watering. (bloom 4-6-8 @ 2ml per liter) Make sure you get quite a bit of runoff everytime you water/fert. Great your ph adjusting the water before applying.

I could not find much info about the ferts other than having npk and micronutrients. I doubt it has calcium and magnesium. Dolomite if in your soil mix at the beginning is probably running out. I would at least apply epsom salts once at 1 teaspoon per 3.8 liters fert water. If your using tap water, this may have enough calcium from calcium carbonate.

If you definately need calcium or/and magnesium, you can topdress the pots with powdered dolomite lime if the ph is low @ 1 1/5 teaspoon per 4 liters of soil mix. If ph is ok or high, add cal mag with the fert water everytime using epsom salts + powdered gypsum at 1/4 teaspoon of each per 3.8 liters fert water. Calcium nitrate could be used instead of gypsum at the same rate but adds nitrogen you don't really desire during flower. (ok still though) Calcium chloride could be used instead of gypsum but I would need % ca and net weight of the bottle to give you a rate of 60 ppm ca.

Didn't really answer your question. :D
 

Core

Quality Control Controller
ICMag Donor
Veteran
got more pics of the problem?...my thought is like yours .....looks like a bug eating the leavessurface :2cents:
 
Last edited:

DrLongbottom

Well-known member
Veteran
Is it possible you sprayed with neem on those leafs while the sun was on em...could be that kinda damage....DLB
 

Moco

New member
more pics

more pics

Hi thanks for your help all.

I thought maybe it was form underferting too...

So anyways what I did today was water all three plants really well with about 1.5 liters of water each, with 3/4 strength plagron bloom nutes. Alot of water came out of the bottom of them. I also gave them a light spraying of neem. I think that perhaps the soil was too dry in some parts of the pot, and it got quite warm during the day, These blotches remind me a little bit of what happened when I first put these guys out under the Sun. They got some weird blotches too.... I think from the heat on the roots....

I also decided to put up some more pics. It´s too late for me to go looking for epsom salt, so that will be for some other day.






 

Core

Quality Control Controller
ICMag Donor
Veteran
i see no def or overferting signs what so ever.....they are looking verry health 2 me...i'm also gonne lean towards Dr's explenation....but it looks a little similar as bug eating....eather one of them could be the prob....IMO
 

Moco

New member
Well I know that I didn´t not spray the plants ever in the Sun. I always waited until Dusk.


I am hoping it won´t bother my plants much more, because the truth is that it spread really quickly on two plants and a third has a small signs... if it doesn´t stop it could do damage due to the small size of these guys
 

inflorescence

Active member
Veteran
NOT a nute problem.
Most all nute problems show some form of pattern as opposed to complete randomness. This is becuase the plant is essentially a pattern of network veins and drains so a nute problem affects some portion of the plant in the same way. (upper vs lower, mobile vs immobile)
 
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