why my seedling are dieing

[exer]

hi folks

I germ.a few seeds.When they was 10 cm long with first internode the steam become veary thinly and they just die.From 20 seeds 4 only survive.This happen to me second time now i lost 30 seeds,and i dont know why.
I m growing for 2 years now ,but somethink like that didn t happen to me.

The seedling was in coco ,watered with ph 5.8 and 0.8 ec,under 400 w MH light, but the distance was 1m .Temps are 80 f, RH 55%.

Can be to strong light?

 

[KarMic]

What are you feeding? If anything.

Also, what symptoms do they show when they start dying?

 

[exer]

i feed them with floranova grow 0.8 ec- 560ppm
the stalk become veary thinly, they cringe and die.

 

[KarMic]

Well I grow in soil, and have no experience with coco...is there any chance of your medium being contaminated? Take a close look at the dead seedlings' taproot...

Also I don't feed for the first 7-10 days...but, this is in soil.

My veg temps are 80-ish w/cfls and my RH is in the 70's.

How long does it take for them to die? do they show their first sets of leaves?

 

[exer]

yes they show first sets of leaves.
This is veary strange i realy dont know what i m doing wrong.

 

[RockyMountainHi]

light may be too strong - temps are a tad high.

I'd get them started with floros - makes it alot easier.


.8 EC could be a lil hot. Ya don't take the new baby out for mexican food ya know?

I don't do coco, yet,,, is your watering schedual right? Don't ya wash coco? rinse and pH, acrually, I think

I do do rockwool - well still workin on first harvest,, anyway I understand coco is hard to overwater - could you be underwatering and the plant drying? -- sometimes a humidity dome helps little ones get a foot hold -- root hold? lol

If your methods didn't work last time, be careful about doing things the same way twice.
It's illogical to repeat procedures and methods and expect a different result.
That said - do a lil reading- post up and get advice and see what may work better next time. I think your better to work with higher numbers of plants; - especially till ya get a harvest or two down - losing a couple plants sucks if a couple is all ya got - if ya have 10 or 20,, a couple is nothing to worry about.


Get a 6-pack of gypsey's seeds and keep working at it, many, many little pot plants died in my learning curve. I still loose some.
dammit!

And strains can make a difference - some strains are harder to kill.
Keep pushin on you can do this.

I still loose some.
dammit!

 

[Mr.Hades]

Try a different method?

First, you could try to germinate in damp papertowels. (Keep them moist at around 75 degrees but not wet.) When they pop, start them in styrofoam or plastic cups (make sure there are holes for drainage) with a good quality mix of soil (w/perlite) and then when they fill the cups, transplant into a coco mix with a good nute mix. Make sure the light isnt too powerful, (use cfls or low powered MH for seedlings) and keep good ventilation with temps of 70-80 degrees and you should be okay buddy.

 

[RockyMountainHi]

he's in coco, lost 30 seeds and trying not to make it 40.

I would re-evaluate and adjust too.
And ask for opnions.

and "Mr.Hades do I know U?

 

[Mickymouse]

Light not to strong I start seeds under a 1000w mh and thats nowhere near what the sun is.I would up the ferts. I start with a 1.0 EC.When the seedling streachs up(they all do a little) put more coco around to support it.I start seedlings 2 inchs below what height of soil I want.When they strech fill in and your at right soil height.

 

[10k]

i feed them with floranova grow 0.8 ec- 560ppm
the stalk become veary thinly, they cringe and die.

My first thoughts when you mention they get tall and fall over was not enough light.

But now, when you say they become very thin and cringe and die, I have to ask you...
Are they just falling over at the base of the stem and getting kind of soft mushy and dark around base of the stems?

ie: "damping off"

 

[exer]

My first thoughts when you mention they get tall and fall over was not enough light.

But now, when you say they become very thin and cringe and die, I have to ask you...
Are they just falling over at the base of the stem and getting kind of soft mushy and dark around base of the stems?

ie: "damping off"

yes man!Just like you said.Soft mushy and dark around base of the stems

 

[Hazy Lady]

How good is your air movement/exchange?, the best prevention for any 'fungal' infection (which damping off is) is good air movement and keeping your air on the dry side of humid 40/50% RH help's.

 

[brownstormy]

Yea, sounds like the air and maybe even the medium may be too moist.

 

[10k]

Medium too wet and/or cold often can invite damping off conditions on sprouts.

Also, too much air flowing across medium surface sometimes has an evaporative cooling effect on some kinds of small containers. Peat pots for example, because of their tendency to be all wet outside often can cause the whole thing to run a lot colder medium than expected, from the evaporative cooling breeze blowing over them.

 

[exer]

thanks !

 

[rambam]

Wow. Such subtle discernment. Good call, 10K.

 

[grodog]

Let me step in here.Please listen, this has happened to me several times in coco and I could not figure it out.I lost alot of seedlings!When starting seeds in coco you have to "charge" the coco with nutrients, especially calcium and magnesium.It becomes even more of a problem if your using RO or distilled water.When you get the coco, it has no nutrients what so ever.The fist nutrients you water the coco with is absorbed into the coco and locked until it is "charged".This is what you need to do, water your seedlings with full strength veg nutes, preferably with Cal-Mag.Sorry if this sounds confusing, but trust me, that is why your seedlings are dying....

 

[10k]

Lets not over fert the seedlings with full strength ferts grodog.

I agree that seedlings in an inert medium like coco will need some light ferting,
however exers problems were happening wayyy before the seedlings needed any food source.

The thread starter exer, obviously had seedlings that were damping off.

 

[piranha]

same prob i had. i guess ya the soil is too moist even though its coco it maybe always too wet.

 

[grodog]

Lets not over fert the seedlings with full strength ferts grodog.

I agree that seedlings in an inert medium like coco will need some light ferting,
however exers problems were happening wayyy before the seedlings needed any food source.

The thread starter exer, obviously had seedlings that were damping off.

Im gonna have to disagree with ya there 10k.We all have a right to our own opinion though...Exer, please do us all a favor and when you start more seedlings(and take 10k's advice), please post up your results.This will be a good learning experience for everyone..