Nute Burn?

SmokinOGkushTrees

SmokinOGkushTrees

Active Member
My plant has been in a Veg. state for 3.5 weeks now.Outdoors. It is 14-15 inches tall and lookin very healty. It is in a 5 gallon pot, FoxFarm soil (ocean forest), i have fed it once with Super Natural Gro terra (half the recomended amount), and when planted i used Super Thrive. I fed it 6 days ago with the Gro Terra(half recomended dosage), and 2 days ago with half the amount of Super Thrive. I had a few spider mites or even aphids land on my plant and i have been spraying the leaves and underleaves with water and a very light amount of dishsoap, then re spraying again with water. All at night time with no sun out. all bugs gone. plant looks GREAT EXCEPT FOR THIS SHIT!!!! (ph is @ 7.2, not over watered, temps have been getting into the 95+ lately, and it has only been getting 8 hours of direct sunlight.) why do i have brown spots?






 
SmokinOGkushTrees

SmokinOGkushTrees

Active Member
It is in only 8 hours of sun because i am vegging in the shade until about 4.5 weeks. once i get there i will place in location to get 12+hours of direct sunlight. But before i do that i need to found out my problem. I highly doubt overwatering is the case, i live in hot/dry conditions and i water about twice a week. I think it might be a Magnesium build up between my soil/nute combo. other than that, i am clueless. could it be my plant is trying to flower and i am feeding it veg. nutes and that there is a lack of nutes instead of too much?? i am lost here, everything looked healty until about 6 days ago when i started spraying the leaves with water because of dry/hot conditions (which was very light, and a mist not a spray, and it was at dark) It has healthy new growth at the top 5 inches, all damage looks below the 5 inch line. stem is green, and only about 15% of the leaves are showing signs of brown spots and blotches, and only new growth is curling downwards (not all, but some). Let me know if you have any answers.​
 
Marlboro47

Marlboro47

Well-Known Member
Calcium (Ca) - From slight chlorosis to brown or black scorching of new leaf tips and die-back of growing points. The scorched and die-back portion of tissue is very slow to dry so that it does not crumble easily. Boron deficiency also causes scorching of new leaf tips and die-back of growing points, but calcium deficiency does not promote the growth of lateral shoots and short internodes as does boron deficiency.
Manganese (Mn) - Starts with interveinal chlorotic mottling of immature leaves and, in many plants, it is indistinguishable from that of iron. On fruiting plants, the blossom buds often do not fully develop and turn yellow or abort. As the deficiency becomes more severe, the new growth becomes completely yellow but, in contrast to iron necrotic spots, usually appear in the interveinal tissue.

Usually Cal/Mag nute solutions are added with your fert. Thats should fix it. Def not nute burn.
 
SmokinOGkushTrees

SmokinOGkushTrees

Active Member
so i should add the cal/mag nute? i am using Gro Terra by supernatural and it has a concentration of 0.005% Manganese, and Boron is at 0.005%. does it need more? i didn't really understand what your telling me to do. Thank you very much for the info though.
 
C

college+MMJ=winning

Member
<< Bump >> Was this a cal mag issue?

Also what PH are you feeding your babies? (you said PH @7.2 is that the soil PH) >> or water going in....

I would recommend feeding with purified water that has sat out for 24 hours or so unless you know it does not have any chlorine in it.
(tap water has chlorine in it)
If you feed comfortable bring that water ph down to more like 6.3 - 6.7 (see attached chart - This will work with your soil.

Hope they already getting better

hydro_ph_chart.jpg
 
I

Irieking

Active Member
i would say 7.2 is pretty high... my water comes out of the tap/fridge at about 7.6 and i drop it to just under 7.
 
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