Overfed?

[furley]

Hello all, I am having some minor issues with 5 dj short blueberry clones... Take note they are running side by side 7 blue dream that show none of the same problems.

4 of the blueberries have twisted leaves, which I was told was either a Ph imbalance or overfeeding.. I was using Lucas Formula with FloraNova Grow, with 5ml/g in 20gals, with a ppm of ~600 (My tap is 40ppm 7.0ph). I have been hand watering the blueberries because of my E/F setup, the roots have not reached the water line. They also are in organic rapid plugs which seem to need more water than rockwool cubes.

Here is a picture of the worst plant, the only plant that has discoloration in the leaves. After reading more on Lucas formula I re-filled my res but switched to FloraNova Bloom instead. I did the same 5ml/g and got about 580ppm, which the clones were watered with this morning.

My question is, does this look like overfeeding? I find it strange that each blueberry has twisted leaves, while the blue dreams are VERY healthy.

 

[orpanic]

maybe lockout,...flush with whatever ph hydro uses....not sure, I go organic soil or soiless

 

[habeeb]

BB and most DJ strains are a little crazy

that's P def

good luck as I hear BB can be a little bitchy

 

[furley]

Hm I wonder how they still need phosphorus... Should I water them with 1/2 strength FloraNova Bloom when lights go on? Or keep flushing for another half-day or so?

 

[Blue Dot]

way too light green to be over fed

they would be a lot darker green if overfed

 

[silent_lemon]

is this usually caused by a P deficiency straight up, or a lockout of P?

 

[Blue Dot]

is this usually caused by a P deficiency straight up, or a lockout of P?

what's the difference, your plants not getting the p it needs.

90% of the problems in the cannibis infirmary happen because of this.

The end result is the plant doesn't get what it needs so you have to ask why.

99.9% of complete ferts have enough P so it's usually something else that's holding the p back.

growers want to blame the nute manufactuers when in reality they do an excellent job it's the grower who mismanages the nutes in relation to their conditions, medium (like here), etc

 

[furley]

I'm going to hit them all with a small dose of FNB soon... I only flushed them yesterday and they seem to be hungry now for nutes.

 

[furley]

Hit them with 450ppm FNB, but I'm going to increase to a full dose as the tips of some leaves are a little yellow and all plants are light green in appearance.

 

[habeeb]

^ what blue dot says is true, you only need a small amount of P, but most the time a P is from something else off, but remember there are sometimes when there is not enough P..

well can't help as I don't do hydro, so good luck

 

[Dr. Bloom]

I had a similar problem with some larger DJ short blueberry clones using the lucas formula.

The key is that his formula only works if you run it at full strength on any plants that are being given full light. Otherwise you will have nutrient deficiencies. I was running my BB's at 900 ppm (instead of 1300 as lucas suggested) and developed a magnesium deficiency. Basically, consider that your half strength lucas mix might not be enough for even small plants under full light.

 

[furley]

Dr. Bloom I think that has been my problem actually I did not realize that clones were the same maturity as mother's. I have them watering at like EC 1.5 and will go up to full strength tomorrow. The leaf pictured got a bit worse since the picture and I ended up cutting it off (over 50% was damaged).

It seems that some of very tips of the leaves are curling up a small bit now though

 

[Dr. Bloom]

I know what you mean furley. My leaves actually curled more at a lower PPM than they did once I raised it up. How much light are you using. If it's full strength HID light then you need to feed full strength with the Lucas formula to avoid deficiency.

 

[LacyLePlante]

From looking at your pic closely, looks like you might have spilled some nutes on your fan leaf! Under hot lights, that will fry the foliage!

 

[furley]

Lacy, that might have happened now that you mentioned it.. Here are the blueberries now, they have started to look better since I lowered my pH to 5.5 (finally got a good meter)...

This is the worst bb:

This is what the others look like (better but still sickly):

The blue dream look good:

also, pre-flowers already??:

 

[smellychronic]

Pretty much pre-flowers. Can't tell, i think it's just female flowers.

 

[Hash Zeppelin]

some strains show preflowers very early on, that is a great trait.

 

[furley]

Ya, all the biggest blue dream have tiny preflowers. Also an update, I lowered my ppm to ~400 and have begun regular watering again, I burned them before

 

[furley]

Some of my Blueberries have some bad necrosis from early on... should those leaves be removed or will they rejuvenate fully?