sick plant late in the flowering stage

[dtoker]

hi there, heres a bit of background on the plant before the pix. its been growing for around 6 months just on a window sill untill i decided to stick it under 2x 23watt cfls 12/12 in addition to the natural daylight about 3/4 weeks ago, it had allready started to flower. it was ok for the first couple of weeks then i decided to give it some nutes, (biocanna). i think i gave it a bit much for the first dose and the leaves started yellowing slightly and curling right on the tips. i flushed it after a few days and have given her another few waterings since but its worsening. im using straight up tap water left out for a day and due to lack of knowledge its planted in normal potting soil with no perlite! well heres the pics, any advice much apprieciated






sorry about the crappy camera phone pics guys

 

[b8man]

I'm not sure - is that nute burn? The edges of a few leaves look scorched, but the overall colour of the leaf looks more like N def.

I'm leaning toward N Def.

 

[dtoker]

how would i fix a nitrogen def then mate? Its not so much the edges but the yellow color seems to fade into a dead brown on the tips. There are a few lower leaves that still look a healthy green?

 

[dtoker]

cheers for the advice so far!
Ive read on here that its natural for leaves to yellow in mid to late flower - would you think mine is to extreme and/orearly?

 

[b8man]

Right - so the plant is 4 weeks into flowering? Because they will naturally exhibit a nitrogen deficiency late in flowering and they look a bit older than 4 wks.


I'd say just feed it the flowering nutes you have but at a lower dose than before. You can buy specific nitrogen boosters, such as fish emulsion, but the plant should be getting a steady feeding of everything that's in the flowering food, not just N. Really, there shouldn't be an N def until the end if you're following the feeding chart.

But I'd wait for another few opinions before doing anything.

 

[dtoker]

its hard to say because the plant was in natural daylight and flowering extremely slowly for around 2/3 weeks before i added the lights.
Ive got some bone meal i guess i could add some of that or a lower dose of nutes like u say mate

Forgot to say that the hairs are around 35/45 % orange i think

 

[b8man]

Can you get some pics of the buds? Just to get an idea of the age.

 

[dtoker]

yeah good idea, ill borrow a decent cam and get some later buddy

 

[MynameStitch]

how much longer your plants flower? Yellowing this late is normal, if it's late flowering, do nothing to the plant; bman is correct, they always exibit some form of yellowing, you want them to yellow, as you want them to use stored nutrieitns up as this helps with the final flush when you harvest.

 

[dtoker]

i really dont know how long is left, ive never grown before. i'll get some higher quality pics later and hopefully you lot will have an idea. do the leaves go yellow then brown in the last stages or should they just stay yellowish?

 

[MynameStitch]

They go yellow brown, the brown is what is left over after the nitrogen has been sucked up, it turns what is called necrotic tissue, dried dead plant tissue, that happens to any leaves that the plant has sucked dry, weather it's from nitrogen or magnesium.
You need to get a microscope with a 20X magnification and get one that has a light on it, take it and put it on one of the leaves that has trichcomes, the little sticky looking mushrooms that are on the parts of the colas.

You want to look at the heads of the trichcomes, you want them to be way more cloudy and ambers than clear, clear heads is not a mature trichcome, the ones with cloudy heads/amber heads is what gives you your couchlock/ head high.

Harvest when most of the trichs are cloudy, check around the entire plant, sometimes the lower part of the plant does not finish as quick as the rest, so what people do in that situation is chop the half of the plant and leave the rest to bloom under the light a little longer, until it catches up and when it does you can harvest it.

 

[dtoker]

cheers mate some valuable advice there
didnt manage to borrow a camera 2day but will be getting one tomorrow anyhow so ill post some pics

 

[dtoker]

Can you get some pics of the buds? Just to get an idea of the age.

here we are mate finally managed to get some from a decent cam,

 

[MynameStitch]

Nice buds for a fluro grow m8! You can also add some compact fluros to the deal for side lighting; I do that in flower when I was growing mine, I would use a HID htough, and compact fluros; would use them for the side shoots.

You check the color of the trichs yet? She looks like she is near finished.

 

[dtoker]

its was natural light that developed the plant and it starting flowering naturally but since ive added the lights its gone boom lol

i havent checked the trichs, i dont have access to a microscope. how do you think one of these..(ebay link) would do for the job? also ive got a mate with a cannon eos 1 and a macro lense so i might get him round

cheers mate

 

[MynameStitch]

That is exactly what you want, BUT 60x is a little bit too powerfull, you don't want to go over 40X.....

Eos1 rocks dude, I want to see some macro shots with that camera, you got to get a hold of that and get some macro shots!!!!!!
I own a canon rebel XTI, I would love to get some bud shots with mine if I was growing.

 

[dtoker]

ok mate cheers, so i might try that out then, i hope its not cheap crap though lol
yeah the eos1 is an amazing peice of equiptment man, the only thing he needs is a ring flash. ill try and get him over