Help Yellowing Continued

[Fogdog]

I need help , can someone tell me what this is? Gnat or Aphid?View attachment 4000489

not an aphid.

Aphids look like this. Usually they don't even have wings



Some have wings but don't look like the fly or gnat or whatever is in your picture.
Aphid with wings.

 

[Xs121]

Here is a better picture.

IMO

It's deficient in any of these elements....

Magnesium
Manganese
or Sulfur

Try to use a fertilizer that has a good percentage of the above elements or add Cal-Mag to your current fertilizer (I think FF Grow Big has a good percentage of sulfur in it but lacking in magnesium). Keep feeding it for 3 days and see if that fix the problem.

 

[BurnzyBurnz]

IMO

It's deficient in any of these elements....

Magnesium
Manganese
or Sulfur

Try to use a fertilizer that has a good percentage of the above elements or add Cal-Mag to your current fertilizer (I think FF Grow Big has a good percentage of sulfur in it but lacking in magnesium). Keep feeding it for 3 days and see if that fix the problem.

Will do much thanks

 

[OldMedUser]

Thanks bro, enjoy the wedding

Thanks, I will. Some major family crap going on on the bride and groom's side so it could be very entertaining. Her own father and brother aren't showing up because dad hates the groom and bro wants to buy the farm when dad retires so doesn't want to piss him off. The groom's parents are split up and hate each other but both are showing up so sparks may fly there too.

I'm staying sober and keeping my yap shut tho will be stepping out for a toke with my son and nephew for sure. I'll be laughing my bag off in the corner.

Next weekend is the party for my mom's 90th and all my relatives on mom's side are coming so there's potential for some friction there as well. My American republicunt cousins will be there. Her real b-day is tomorrow but the wedding made her put the party off for a week.

 

[Huckster79]

Quoting myself from another thread:


Pretty sure those are fungus gnats. Definetly indication of too wet of soil. Now I fight em a bit, but in coco I keep it moist all the time, coco doens't require the dry cycle that other mediums do, so it does temp them in. But go get some mosquito dunks from a big box store, they are to put in yard ponds and such. You only need a chunk of one, as they are designed for big areas of water, put it in your watering container, then fill with water and let it sit with that dunk in it till you water, days if possible. keep the chunk and repeat, fill em up with water as soon as you use the water so that dunk can soak in that water till next feeding. Its a bacteria of sorts in the dunk, so it won't harm your plant but will eat those things in larvae form. Yellow sticky traps will whack the most of the adults, but you gotta do something about those larvae or you'll have a never ending supply of adults unless you dry that soil out so bad you endanger the plant...

I've also been told you can scoop out top inch of soil or so to get many of the larvae, then cover the top layer with sand, dicotomous earth, rice hulls, etc. But I'm happy with the dunks... may try sand on top from the get go next round tho...

 

[OldMedUser]

Here is a better picture.

With that pic it's obviously a micro-nutrient problem that looks like low S. A little Epsom Salts will fix that up and give it some Mg too. Low Mg and N will show first in the older fan leaves then progress upwards as they along with P, K, and Zinc are mobile while all the rest are immobile and show symptoms in the newer growth first. Low iron will start yellowing from the petiole outwards to the tips of the leaves. Tsp of epsom in a liter of water for a foliar spray will help fix them up quicker with about the same amount in the feed water to make sure there is some available to the roots. Generally if the pH is too high things like S, Fe etc can be locked out .

I would hold off on adding Calmag as that won't give you any S and it's possible too much Ca may be causing this problem.

 

[OldMedUser]

I've also been told you can scoop out top inch of soil or so to get many of the larvae, then cover the top layer with sand, dicotomous earth, rice hulls, etc. But I'm happy with the dunks... may try sand on top from the get go next round tho...

I've heard the dunks work good but I've used about a half inch layer of diatomaceous earth to completely cover the surface and then water from the bottom to not disturb the DE and that seems to get rid of them too. At least one sticky trap in each pot and a couple on the walls near the foliage helps get rid of the adults so they don't lay eggs in the soil.

Also remove any bags of dirt from the area as those are most often where they are coming from. Not just outside the grow room but out in the garage if the grow room is in the house and check the bags for larva as well. Dig in and put a tsp of the moist dirt in a shot glass, fill to the brim with water and lay a piece of white paper towel on top to pick up what floats. Then examine with a strong magnifying glass or scope to see if there are any tiny, translucent larva in the flotsam. Should see two tiny dark eye spots on one end.

 

[Huckster79]

I've heard the dunks work good but I've used about a half inch layer of diatomaceous earth to completely cover the surface and then water from the bottom to not disturb the DE and that seems to get rid of them too. At least one sticky trap in each pot and a couple on the walls near the foliage helps get rid of the adults so they don't lay eggs in the soil.

Also remove any bags of dirt from the area as those are most often where they are coming from. Not just outside the grow room but out in the garage if the grow room is in the house and check the bags for larva as well. Dig in and put a tsp of the moist dirt in a shot glass, fill to the brim with water and lay a piece of white paper towel on top to pick up what floats. Then examine with a strong magnifying glass or scope to see if there are any tiny, translucent larva in the flotsam. Should see two tiny dark eye spots on one end.

Interesting insights... i forgot about bottom watering i used to utilize it... great idea on the soil..