Guerrilla grower's nightmare Leaf spot disease

I have dealt with this for two years now this being my second. And had no idea of what i was dealing until now. I thought my ph was off nute lock out or something, it hit me last year and killed half my plants. This year it's back and i finally figured out what it is. It is leaf spot disease and shows up around the first sign's of flowering and destroy's your plant's one leaf at a time.here is a image of a effected plant. Has anyone else ever had this problem. You can control it with liquid copper fungicide sprays.

id like to see a bigger picture to see if i have seen similar problems/.

I think its the strain. Get a new more reliable strain for next year to prevent this disaster continueing.

it might be nitrogen deficiency, cuz its only your lower leaves.

Nope it's not strain or deficient it's spotted leaf disease i have seen this several times over the years but never knew it was a fungus just thought something was off on the plant. I found a thread on it at ICmag. It starts on the lower leaves and climbs the plants spreading it wiped a couple of 1 pounders last year i didn't know why they died but know i do. here's a closer pic. This is a crop killer that lives in a area from season to season.

is there any nitrogen in your flowering solution, you say this only happens when its flowering. and it seems like theres a lack of Nitrogen

yea fert's are fine, it happens at flowering because the fungus gets active around july when the humidity get's goin. Thanks for the concern but i have already solved my problem i just wanted to post this in case someone else is having problems.

tristynhawk said:

Nope it's not strain or deficient it's spotted leaf disease i have seen this several times over the years but never knew it was a fungus just thought something was off on the plant. I found a thread on it at ICmag. It starts on the lower leaves and climbs the plants spreading it wiped a couple of 1 pounders last year i didn't know why they died but know i do. here's a closer pic. This is a crop killer that lives in a area from season to season.

Click to expand...

Why did you bother asking only to answer yourself. It is the strain, it is prone to disease, fungas etc.
bit ignorant arnt you. Get another strain and learn from people who have seen this before or continue losing massive plants year after year.

*BUDS said:

Why did you bother asking only to answer yourself. It is the strain, it is prone to disease, fungas etc.
bit ignorant arnt you. Get another strain and learn from people who have seen this before or continue losing massive plants year after year.

Click to expand...

well thanks for that well thought out reply you ignorant ass, don't bother replying in my threads anymore cause you will be on ignore. I know what's wrong with my plant and it won't be a problem anymore, for your info, im growing several strains. Just thought some people might want to learn something about leaf disease but oh well you guy's keep giving her nitrogen.....lmao
Other forums have this topic on a sticky and here at RIU we don't believe it exist. Apparently you have never seen or had leaf disease. You are talking without any experience on the subject.

Happy growing....tristynhawk.

well when you put it like that.. i didn't know this wasn't covered in any stickies. this is deff sticky material

How is it called ? I don't think that it is Powdery Mildew ?

no it.s not powdery mildew and it.s a very serious disease.Capable of ruining your entire year if left untreated. IT can live through winter in the debris or fruit from surrounding tree's.If anyone is interested PM me i will tell them where the sticky is. From what i have read it effects guerrilla grower's worse.

happy growing.....tristynhawk

Something Neem Oil treatment would cure?

No they say it won't.

I am dealing with that right now, too. I have been reading a shitton of stuff trying to get rid of it. "Leaf Spot" is a broad category of fungal issue, but it is definitely not yellowing cuz of nute lockout, etc. I have a ton of different things that I am using to try to fight it back because now it's in my indoor as well. (Mine starts to attack during veg in some strains, but not until flower in others.) I haven't tried the copper yet, thanks for that tip.

They say some strains are more resistant to it, but it is not a "strain issue". It is way more complicated than that. In order for a condition to develop, there has to be a set of environmental conditions favorable to that condition, something to get it started, and in the case of leaf spot, a host plant that is unable to defend itself from the fungus.

Any strain will be unable to defend itself from the fungus if it is sufficiently stressed. Some strains are very easily stressed, some are not. Some strains are more able to defend themselves from a given pathogen than others, generally speaking.

If the environmental conditions favor the pathogen, and the pathogen is introduced (in the case of an outdoor grow, lots of pathogens are always there in some quantity). If the plant is not one that is good at fighting off a particular pathogen, and the rest of the environmental conditions favor the pathogen, then you get an outbreak. Once you have an outbreak, it is tough to get rid of it.

Some of the environmental factors for leaf spot are high humidity, pollution, and low air flow.

can this spread from plant to plant? two of my plants are showing this, and they are right next to eachother, every other plant is perfect, so not a deficiancy

yes if you pull off the leacves and then touch other plants it will spread. Plus the leaves on the ground will spread it. Some strains are tougher then others will resist it longer or maybe immune. But rather then letting a fungus tell me what i can grow i would rather prevent it. Liquid copper fungicide treats it fairly well they say, some people start using it around july just as a preventive medicine. My whole area has this disease not just my plants bushes have it weeds have it. And seems like all the locust tree's have it.

copper is poison to all plants. when picking spots find a well drained soil. i also add rose food to the area well outside the plants. iv done large areas down wind. the slow release sulfur kills the mold that release the spores that then attack the plant. what i found to work the best after 30 yrs of growing. when your growing a strain. plant the area with just that strain. when they start dieing hopefully you can find one that isnt. and clone it. i also find mulching plants help this mold. planting early will help the roots get deep and you shoulnt need mulch if its a bad area. also pull the mulch off the ground in the aera around your spot clean it up.

Copper is quite toxic, would you have to wash the leaves and plant matter after spraying it with copper prior to consuming it? Or do we just hope the plant metabolizes all of it? I know liquid copper fungicide can be used on fruits and vegetables, but those are washed prior to consuming.

i wouldnt us it at all. it will kill your plant if you us to much and hurt your yeild.