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Leaves slowly turning black

- - - - - coco

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#1
Danatron1987

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Hi Guys, 

 

Would like to know if any of you know what this is or what i need to do to fix it.

Coco grow using Canna A B nutes PH 5.6-5.8

I noticed i had an infestation of spider mites, i sprayed the plants with white oil and repeated after 4 days. 6 Days after spraying with the oil the leaves have started turning black starting from the bottom of the plant slowly working its way up. 

What should i do?

PS. Only respond if you look at the photo and have dealt with a similar issue

Its not nute burn as the leaves are black not brown black 

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Edited by Danatron1987, 07 April 2013 - 04:21 PM.

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Say thanks with some bits:  1Ed71abMUAJ3q3XBQzYzSzJRydR58kKeT1

#2
pisspotgrower

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How old is ya plant, looks like might be young for a heavy spray as thats what happened to my leaves on seedlings after a spray.....but id defently be rasing my ph to 5.8-6 as i believe 5.6 is too low for coco....

 

whats ya room setup plant numbers, lights, air temps n stuff all can have effects on plants......id be very worried having spider mites in early veg as will be a battle for the whole grow


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#3
brick

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Did you spray them with lights on? Or before lights on? Those sprays are best used just before lights switch off. If of course you are growing under lights.


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#4
Danatron1987

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They came right after a week of so, i got rid of the spider mites, i dont think the plants liked the white oil


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#5
The Hash Nibbler

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Heya Dana =) , i did the same with a Pyrethum spray, almost killed the lot. I'll check later, but sure that contained oils too, and I did mine lights off. Try Miterid, thats a mix of Neem and Botanical oils, dont think cannabis like petrolium based oils.

 

Peace. Nibbler.


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WARNING/DISCLAIMER The OZ Stoners cannabis community contains information regarding cannabis & other drugs; it is designed for mature (18+) audiences only. This site in no way condones the use of cannabis by minors. The content here within this cannabis community is for educational & entertainment purposes only. Any buying/selling or trading of illegal cannabis seeds, clones, flowers, resin or oil is strictly prohibited within this cannabis community.