Hafta's 100% Sativa Panama Multi-Stage Harvest CST Plus Droughting

[nivek]

I think your plant needs to run entirely out of water sooner than you are allowing. Tho i admit i dont know your exact methods. I will read deeper later

And imo only. Dont freak about lwa. We know a wilty leaf when we see one.

Leaf wilt is used to measure done. So here is something to think about.

Like all the droughting affects. Leaf wilt starts at the very bottom of the plant and works its way up over time.

So. Which leaf will you use to measure lwa?

It matters. As i learned

Karma sent

 

[Stunger]

So. Which leaf will you use to measure lwa?

Hafta has made a template, visible in the pic, that he has fixed in front of the leaves to measure the LWA.

 

[scottreid1966]

Like all the droughting affects. Leaf wilt starts at the very bottom of the plant and works its way up over time.

So. Which leaf will you use to measure lwa?

Daamn good question! Let the science and documentation continue!
Happy day, folks! Enjoy!

 

[Hafta]

I think your plant needs to run entirely out of water sooner than you are allowing. Tho i admit i dont know your exact methods. I will read deeper later

And imo only. Dont freak about lwa. We know a wilty leaf when we see one.

Leaf wilt is used to measure done. So here is something to think about.

Like all the droughting affects. Leaf wilt starts at the very bottom of the plant and works its way up over time.

So. Which leaf will you use to measure lwa?

It matters. As i learned

Karma sent

@nivek,
Thanks for the info.

I removed enough water (75%) to expose approximately 60 - 70% of the roots. This should result in a decrease in total absorption. I tried to mimic a plant removing residual moisture from the soil once watering is ceased. So far the absorption rate of the plant is about 50% of normal.

I will try to document the rate at which the wilting takes place and try to correlate it to moisture removal/availability. LWA is being monitored because it is referenced in the original study as well as by successful droughters on this site. If achieving the proposed LWA is a determination of completion, I would like it to take place in the 8 - 11 day range (per other successful droughts). Hopefully the angle changes progressively and the increase in trichomes coincides with the changes.

There are also a couple of other factors that may or may not affect the rate of wilting. The plant has been stress trained to strengthen the branches and I have been using monosilicic acid to strengthen them as well.

I am using leaves at the top of the control cola, the highest part of the plant. I am also observing the entire plant and will document (with photos) effects in other parts of the plant.

Secondary bud day zero

Secondary bud day 2

 

[Hafta]

Phase 3 Day 3
There has been no change in LWA
ppm of res is now 1480
plant has used 2 gallons

 

[Hafta]

Phase 3 Day 4 (96 hours)
ppm 1820
There is about a gallon and a half in the res (3/4") The plant has consumed about 2 1/2 gallons.
The irrigation pump started cavitating at 75 hours into drought. I shut it down. This means that the roots will no longer be "rained" on, further emphasizing drought conditions.

Secondary bud P3 D0

Secondary bud P3 D4

 

[Hafta]

Phase 3 Day 5
ppm 2340 and rising
There is less than a gallon in the res
no discernible change in the LWA (yet)

I left the grow lights on for this one

Secondary bud Day zero

Secondary bud Day 5

Overall photo

 

[Nine Toed Hippie]

This journal rocks. Nice work Hafta.

NTH

 

[Stunger]

Looking really good Hafta!

 

[Hafta]

Phase 3 Day6 (144 hours into drought)
Conductivity probe went to zero at 126 hours ( less than 1/2 gallon in res). I was able to get a pH reading one last time. It was at 5.0.
There is no change in the LWA, however, there is only a trace of moisture in the res right now.

WARNING !!! For those that are emotionally attached to their grow, the following images may be disturbing.

Here are some views that might not be available during a drought with other mediums:

Root system before drought.

Root system at res depletion.

I have no idea whether these will recover or not.

Hopefully I'll see some leaf wilt over the next three to five days.

 

[Rexer]

If you've got them handy...make sure to include a full dose of enzymes when attempting recovery.

She's gonna be a sticky beast!

 

[Hafta]

If you've got them handy...make sure to include a full dose of enzymes when attempting recovery.

She's gonna be a sticky beast!

She has been sticky for months now. I am not familiar with dosing enzymes. I have retained the solution I removed at the beginning of drought (one week old, typically lasts three to four weeks so it should still be potent). What do you recommend?

 

[Rexer]

She has been sticky for months now. I am not familiar with dosing enzymes. I have retained the solution I removed at the beginning of drought (one week old, typically lasts three to four weeks so it should still be potent). What do you recommend?

Well then....I'd recommend giving a good look at some enzymes for next grow. Your roots are already spectacular, I can't even imagine them with enzymes in the mix.

Enzymes help break down dead root materials into nutrients (in an oversimplified explanation). And it's a great thing to have on the shelf when fighting root rot. They work in tandem with benifical microbes. West Hippie made me a convert.

If the solution is being aerated, and is being kept cool, light proof, etc. Then it should still be fine. Re-ph it, re-dose microbes (or h202 if sterile).

 

[Hafta]

@Rexer,

I appreciate the education.

I'm running sterile. I use a product that is called Oydator. Basically it is a time released H2O2 designed for adding additional oxygen to aquariums. It is designed for use with up to 35% peroxide. 3% works fine. The roots above have seen daily high temps of 80 - 81 regularly without any issues, until I droughted them.
I'll research enzymes. They could still be beneficial, especially in an emergency. Will they break down the dead root material without the microbial assistance?

My solution is in a sealed cart at room temp, light free. It is not being aerated. I do have the capability to circulate it every once in a while.

 

[Rexer]

@Rexer,

I appreciate the education.

I'm running sterile.

I thought so, but wasn't sure. My memory is terrible.

I use a product that is called Oydator. Basically it is a time released H2O2 designed for adding additional oxygen to aquariums. It is designed for use with up to 35% peroxide. 3% works fine. The roots above have seen daily high temps of 80 - 81 regularly without any issues, until I droughted them.

When fighting root rot i came across some posts on a different form that suggested using the enzymes with h202.
Then when looking at Hygrozyme (as it's easier to get here) I came across this:
CAN I USE H2O2 WITH HYGROZYME?
Hygrozyme is the most effective without hydrogen peroxide, therefore, we do not recommend using H2O2 with Hygrozyme, but you can use up to 2 mL of H2O2 per gallon with Hygrozyme. -taken from their website.

I'll research enzymes. They could still be beneficial, especially in an emergency. Will they break down the dead root material without the microbial assistance?

Here's a copy paste from a manufacturers site:
Enzymes are not alive nor are they consumed when they catalyze a biochemical reaction. When the biochemical reaction is over, the enzyme is ready to bond to another substrate unit again. Given the right conditions, the enzyme can catalyze the same reaction time and time again.

My solution is in a sealed cart at room temp, light free. It is not being aerated. I do have the capability to circulate it every once in a while.

In that case, I'd personally whip up a new batch come time. It's one of those personal choices as a grower. Risk vs reward and all that....you could be fine...but the cost of a fresh batch removes the risk altogether. Again, it's a growers choice thing.

 

[Hafta]

@Rexer ,

Thanks for the recommendation for Hygrozyme. I read up on it and mine will be here tomorrow. I will remove the H2O2 dispenser prior to re-fertigating.

 

[Rexer]

@Rexer ,

Thanks for the recommendation for Hygrozyme. I read up on it and mine will be here tomorrow. I will remove the H2O2 dispenser prior to re-fertigating.

I'll be honest Hafta, the way your roots grow, I'm beyond impressed (for what little that's worth).
I swore off sterile a long time ago, but you've had me re-evaluating that decision.
Give the enzymes a try (as you said it arrives tomorrow), and if you see things you don't like. Shelf it, keep it for emergencies (Root rot). It works even in soil, and is gentle with seedlings. So, even if you decide not to use it in your grows, if you keep mother plants it may be something to give them. All kinds of options.
Sorry for the ramble , but I'm excited to see you try it, and I'm hoping it'll be a helpful addition.

 

[Hafta]

Phase 3 Day 7 (168 hours into drought)
The res is so dry you could drop a Kleenex into it and it would be completely dry when you picked it up. Amazing plant!

There appears to be a slight change in the angle of the leaf to the right.

It looks like a trichome explosion is on the way

Control Bud C-1 Day zero

Control Bud C-1 Day 7

Looks like some snow drifts forming

Same bud, different lighting

The secondary bud

There may be a blizzard on the way ................. hopefully


I'll try to get some trichome photos shortly.

 

[Stunger]

It's getting towards that turning point Hafta!

 

[Foss]

Phenomenal photos! Well done.