Frisian Dew in the Big Greenhouse

[chak-ra]

You can see clearly how small everything is. I hope I've still caught it in an early stage. Wasn't easy to see.

So, I really hope someone can help.

Not the answers I'm looking for:
Stress, Over-fert ( I don't use them), Watering problems, soil/pH problems,...

for all the rest, shoot!

* for those in the know, I've already read the book on Hemp pests and disease by McPartland, Clarke and Watson. (2000) found several things it might be, but still not sure.

 

[HellaFella420]

Its defiantly fungal, can't say more without being there in person..

Beat the shit out of it with some systemic antifungals, if its isolated I would mebbe cut that branch out and see if you can keep the rest of the plant healthy

 

[chak-ra]

Thx HF420!

I was affraid of that. But without proper diagnosis, it's hard to pick a fungicide...
Several apical buds are infected. Next thing I will do is cut away the infected parts, remove them, clean the wound, and check for other sites of infection. If it should progress, I'm inclined to take the entire lady down (will put us back a few KG in yield... but that's not the most important thing). I wasn't expecting FD on the Frisians, as they have natural resistance to FD like botrytis...

It still is the only plant in the garden that has it.

 

[soil margin]

You could have multiple problems causing the symptoms seen in those pics.

As for the leaves curling upwards while still remaining green, I'm inclined to suspect the ambient humidity/temp combination. It looks like the leaves are trying to pull water from the air and having no luck. As temp rises air can hold more moisture so plants expect to be able to pull more water from the air but if your humidity is staying constant there wont be anymore water to pull. It's possible that temps are just slightly too high with humidity being a bit too low.

What is your avg. humidity and temp during day and night?

As for the brown spots, you said you don't use ferts. How are you sure your plants are getting a complete array of necessary components? I could easily see a nutrient/mineral deficiency weakening the plant sufficiently to allow a fungus/virus to set up shop when otherwise it wouldn't.

 

[THC123]

I had something similar on one frisian in 2009 check my 2009 outdoor topic somewhere around august 15thhttps://www.icmag.com/ic/showthread.php?t=115064&page=20

(keep reading for few pages, check post nr 300 and 334

I also had those leaves that made claws and then they turned purple and wilted but it was a bit different then yours.

Was still able to harvest the plant.

If have a fungicides here for the root system, maybe try treating them with it as it is for a whole range of fungal diseases. Try it and see if it gets worse

 

[HellaFella420]

You could have multiple problems causing the symptoms seen in those pics.

As for the leaves curling upwards while still remaining green, I'm inclined to suspect the ambient humidity/temp combination. It looks like the leaves are trying to pull water from the air and having no luck. As temp rises air can hold more moisture so plants expect to be able to pull more water from the air but if your humidity is staying constant there wont be anymore water to pull. It's possible that temps are just slightly too high with humidity being a bit too low.

What is your avg. humidity and temp during day and night?

As for the brown spots, you said you don't use ferts. How are you sure your plants are getting a complete array of necessary components? I could easily see a nutrient/mineral deficiency weakening the plant sufficiently to allow a fungus/virus to set up shop when otherwise it wouldn't.

Ahhhhh, nothing like uninformed good intentions.. He's in Belgium, its not temp/humidity...

Start with something gentle and simple, look for a product that contains "potassium salts of fatty acids"

One is use is "Plant Doctor, Organicide" You can water it in for systemic and foliar for the outsides...

Or skip to the real deal and find a Myclobutanil product or something similar... Not scary at all if used consciously.

 

[gaiusmarius]

do they have enough soil to support the size? looks like it's reaching it's limitations and not able to get enough nutrients and water in there? just a guess, as they are getting extremely big and i know the big plant farmers are giving their root zones 200 gallons of soil mix per plant, specially as you say you are not feeding any supplemental nutrients. is this one of the biggest plants? by the way there is some stuff you can put on cuts you make when pruning that stops the plant suffering too much from the cuts. lets hope some of the big plant organic growers have some ideas, as i'm just guessing. did seem to me from the start that the soil amount per plant was not very large, those boards making you soil beds, don't look very high to support such large plants, or did you dig down to make the holes deeper?

anyway hope you get it sorted. great thread to follow and i'm sure you will get a handle on this...

 

[THC123]

The plants are in the ground, so they have unlimited root space, native soil is clay which is also rich in nutes

 

[gaiusmarius]

but can the roots get into the clay? they were used to your great soil mix, now all of a sudden they are supposed to use the clay? how can you be sure she can get enough nutrients to keep the whole plant healthy and strong? are you giving any teas? sorry for the basic questions, but the answers might help others narrow things down.

 

[soil margin]

Ahhhhh, nothing like uninformed good intentions.. He's in Belgium, its not temp/humidity...

Start with something gentle and simple, look for a product that contains "potassium salts of fatty acids"

One is use is "Plant Doctor, Organicide" You can water it in for systemic and foliar for the outsides...

Or skip to the real deal and find a Myclobutanil product or something similar... Not scary at all if used consciously.

It's in a greenhouse though. It's irrelevant that it's in belgium. That's like saying an indoor grow room can't get too hot because you live in alaska.

 

[HellaFella420]

:facepalm: are you e-stalking me or something soil? Quit being a douchebag, that PM was uncalled for clown...


I was wondering if those beds were only that single 2x4" deep or what... I assumed they had been excavated or something..

 

[sprinkl]

but can the roots get into the clay? they were used to your great soil mix, now all of a sudden they are supposed to use the clay? how can you be sure she can get enough nutrients to keep the whole plant healthy and strong? are you giving any teas? sorry for the basic questions, but the answers might help others narrow things down.

Root size determines plant size, not the other way around. You wont get a bigger plant than the roots can support ime. It might get higher but branching will stop. At this point being rootbound will only make the plant start flowering faster.
Theyre in the preflowering stage and guzzling up all the N they can find, stretching and delaying flowering.

I really hope its nothing serious! Good luck..

 

[chak-ra]

Hi guys! Thanks for the replies!

I go back tomorrow to check if it has progressed and to do a better diagnosis ... hopefully.

The wooden frames they are in are 1,44m² surface, 25 cm high , and another 50 cm has been dug out. So every plant should have around an average of 1m³ of potting soil available. That's something like 220 or so UK gallons.

So can't be rootbound. And the soil is plenty full of good nutrients and mycorrhizal fungi.

We'll see what pictures I can take tomorrow.


And indeed: roots determine plant size. Remember, I don't give 'em steroids or something to grow this big.

As for the weather in BE. Absolutely right. When inside a greenhouse, it really doesn't matter what country you live in... and the climate is in check so far, so that couldn't be it I suppose.

Cheers!

 

[bajangreen]

Ahhhhh, nothing like uninformed good intentions.. He's in Belgium, its not temp/humidity...

Start with something gentle and simple, look for a product that contains "potassium salts of fatty acids"

One is use is "Plant Doctor, Organicide" You can water it in for systemic and foliar for the outsides...

Or skip to the real deal and find a Myclobutanil product or something similar... Not scary at all if used consciously.

Best advice I Seen so far for blight control if that is what it is, you would know by now as blight spread fast.


What's the deal?

 

[chak-ra]

Hi guys

Just came back from the garden.

Doubt if it is blight... doesn't spread that rapidly. Also I can almost rule out fusarium completely. What I'm left with is something like pink rot... It's like forming a second skin on the little stems and leaves... I'm still hoping it is not contagious... none of the other plants show similar disformations and beginning fungal infection. I checked really good today, made sure every plant was carefully inspected.

Thursday it will be 8 days since first symptoms... We'll know more by then. If it hasn't spread any further, I might just remove the twisted budsites and continue flowering the plant.

The Frisians will enter flowering around 15th till 22nd-25th or something.


I cut down some autoflowers (Auto Extreme by Dutch Passion)today as well. Must say, they are incredible in structure, compactness, smell and appearance. Never have I seen such an 'indoor' looking autoflowers. Just incredible. I'll post a link soon to the "show your autoflower pix"-thread. Pictures from our first harvested autoflowers (Think Different by Dutch Passion) are already there.

Cheers guys!

 

[THC123]

..

 

[chak-ra]

Here's the link to the autoflowers:

https://www.icmag.com/ic/showthread.php?t=268847

Next update: tomorrow!

 

[farmerlion]

WOW !!! What a setup. I don't even dream that big. Enjoy every day and all the hard work you have put into it.

 

[scoby]

please take someone with you in there as security, you liable to get eaten by them there big girls

professional 10 out of 10

 

[comustal]

when will the update come ?