White spots on leaves

[athos]

I have 3 autoflower plants in a little greenhouse outside. Today I found white little spots on 1 of the plants, so far it's 1 or 2 leaves. They are still vegging, no preflowers yet.
I checked the leaves underside and it looks good, it doesn't seem to be eggs of some kind.
What could it be?

 

[qwezdan1]

I have 3 autoflower plants in a little greenhouse outside. Today I found white little spots on 1 of the plants, so far it's 1 or 2 leaves. They are still vegging, no preflowers yet.
I checked the leaves underside and it looks good, it doesn't seem to be eggs of some kind.
What could it be?
View attachment 665180

Not a big specialist on pests, but if we illuminate that possibility it can be white powdery mildew (do you have high humidity and or low airflow?) or just something wacky which will sort itself out. Also, are there any other plants in your greenhouse?

 

[briman]

Looks like leaf hoppers to me and spinosad or neem will take care of it.

 

[Waira]

hey Athos-- I'm with Brim', those markings sure look like bug damage to me- thrips, 'hoppers, something very mobile, not always found at the scene of the crime- You're prime meat as an OD grower-- I know all too well myself! The War never ends, but battles can be hammered flat if you can catch things early, be observant at a small scale,.. and have the choice weapons! Anything with spinosad in it is great, Azamax, pyrethrum,... best to have two kinds around, as a 1-2 punch it's really hurts extra! ..yours is a minor case, but cutting the legs out from under the generation building will see them seldom get a foothold,.. toss down some diatomaceous earth on the soil surface; this will work on many types of vermin, not just thrip larvae trying to soil dive and pupate into adults (they don't feed during this phase BTW),...

 

[Egzoset]

Salutations,

Although i'm no longer active and never went beyond just a few experimental sessions anyway, lets just say those spots are a clear sight which would give me the creeps. Long ago i remember there were discussions about Integrated Pest Management and Systemic Acquired Resistance, much more recently i also noticed mentions (elsewhere) of a "Silver Shield" that i associated to Colloïdal Silver solutions spontaneously, euh... This is the sort of topic that i wish would have led to relatively easy to apply preventive solutions, while avoiding the need for more agressive measures as in this present case. At the time, when such matters were still on my to-do list, it wasn't clear if "electric water" would damage the delicate equilibrium of beneficial bacteria/fungi working in symbiosis with the root system, so i'm still somewhat curious: in a context of prevention, would it hurt the final harvest using a couple CS folliage sprays promptly followed by a generous water rinse, in presence of some boundary membrane or similar in order to divert such activated water away from roots right after killing the eggs (no eggs were seen but better safe than sorry)?? Possibly using an even less agressive synergy of combined methods, like UV, ozone, etc... Go figure! In other words, by producing consumables (CS) at home instead of having to rely on industrial solution$, with help from renewable agents to multiply the effects, for example.

Sorry if it sounds like giberish noise, i wish you luck nonetheless! Any chance a lower room temperature might buy some time, slowing down nuisible parasites while searching for a remedy?...

Good day, have fun!!

 

[V1G]

i been growing for 46 years . That dose not mean I know any thing. on all my grows ID/OD put up a sticky trap red & yellow High & low .that way you can see what goes bump in the night

 

[jingo]

Looks like thrips to me and spinosad is quick and easy. @Egzoset people generally spray CS on their plants when the want to produce male parts on their female plants.

 

[Egzoset]

Salutations Jingo,

...people generally spray CS on their plants when the want to produce male parts on their female plants.

Quite exact, though at sufficiently low concentrations i'm expecting it's also possible to avoid the "sex-reversal" effect and still explore CS spray potential just as previously suggested. Parasite eggs are too primitive structures, these can't develop resistance through mutations. The question on my mind is how quick a colloïdal silver solution shall be absorbed by various insects versus vegetal tissue? So to me it's a matter of concentration and timing but i gather this was never evaluated before (...) - or maybe it was and the experiment simply failed, but then i'd appreciate being able to refer to the related journal(s)...

Good day, have fun!!

 

[Waira]

Sorry, CS is the wrong tool for the job, period,...

 

[Eyes on Fire]

you my want to look at supreme growers. ran across two natural products that are suppose to work excellent and imo they prolly would for your pest damage. ones called SMITE lol for mites i think and other stuff I would imagine and another one they hgave. may wanna give them a look. i use two of their product but not those and love em