Not the Usual Yellowing

[dorjewright]

Starting at the 2 week of flowering there was 1 light green girl out of 10 kens gdp then 2, now in the 4th week 3 going on 4. Unlike the other dark green girls with slightly up turning bud leaves; the buds and sugar leaves of these 3 look like they are scowling with a downward slope to the buds leaves. Stems are purplish. They are all being fed the same; Earth Juice advanced formular with extra "grow" 1x/week and teas made with alaskan humus,ec,primal harves guano (0 10 0), molasses, catalyst, fish hydro. soluable kelp 1x/week. Looking at Seamaiden's flow chart looks like maybe too much P (I intentionally added extra P & K early to give a little boost to producing flowers), or a N or magnesium deficiency.
One other possibility, I have been watering with high ph (8) well water (ppms 250) 1x/week without adjusting ph since the girls are in soil and the ej mix is always very low ph. I do this a few hours before feeding.

The main impression is of an evenly pale yellowish green plant with red/purple stems. Closer up the leaf veins are paler than the rest of the leaf.

 

[Coir]

Any pictures?

 

[Seamaiden]

Excess P causes a too dark green color. Because you mention the purplish stems, I'm thinking it's deficient. I'm thinking Mg-, but the tell and super-quick diagnostic for you would be to do a foliar with something like Epsom salt at the rate of about 1/4tsp/gal water (use a sticker-spreader, soap, something like that). If it greens up quickly, there you go.

 

[Tnelz]

Excess P causes a too dark green color. Because you mention the purplish stems, I'm thinking it's deficient. I'm thinking Mg-, but the tell and super-quick diagnostic for you would be to do a foliar with something like Epsom salt at the rate of about 1/4tsp/gal water (use a sticker-spreader, soap, something like that). If it greens up quickly, there you go.

Just for the record this is a no fail way to be sure of a mag def. I've done it and passed it on to others. Great info as always sea!

 

[dorjewright]

ok, will do today.

 

[dorjewright]

OK so I sprayed 4 at 1/2 teas/gal. How long before I should see an improvement.

 

[Seamaiden]

Hours, IF it's a Mg deficiency.

 

[dorjewright]

24 hrs and no or very little change. Since the stems are purple my next move is to foliar spray something with N. I've got some fox farm grow 4 3 3. WIll try that tonight. Any other suggestions. First photo shows the contrast between yellowing and the others; the next 2 shows the pointing downward of the sugar leaves in the yellowing plant and the normal but; ; the last the difference between the normal and yellowing girls.

 

[cannarado]

Any chance the yellow plants are towards the middle of the room. Maybe getting more intense light and thus needing more nutes. They look like they need some more N

 

[dorjewright]

This has been a recurring problem for me. I always seem to have about 30% of the plants with a yellowing/purple stem problem. For the super silver haze I anticipated this for this run and kept the N levels high and they are fine; did the same for the ken's but as I said 3 out of ten are very yellow 2; are beginning to show signs . the others are just fine. I move them around so don't think its too much light or heat. The distance from the bulbs is a good 24". And then there is that downward flattening of the sugar leaves.???

 

[Seamaiden]

Purpling/reddish stems are a sign of P-.

 

[CALIbis]

Looks like their saying feed me.

 

[dorjewright]

So 3 out of 10 are stunted. The rest show signs of over feeding. Take a look at these photos. 1st is normal; next are the stunted buds with the leaves point downward. Last show normal and stunted in front. They are all being fed the same.

 

[Seamaiden]

Have you read the thread on duds and stunted plants, yet? :(

 

[dorjewright]

I will right now

 

[Supercharge]

Possibly an Fe deficiency...

 

[dorjewright]

I'm pretty sure it's fungus gnats since I have a pretty bad infestation. Probably started in those plants. I did use a different brand of soil to top off a few of the bags. Won't know which ones until I harvest in a few weeks.