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Monday update, leading off with the Summer/Fall grow now in the tent at night!
I have no idea why I was leaving these under a dim bulb at night when the tent has been empty for over a week. Force of habit I guess, so I think I'm the dim bulb!
Anyway, I cleaned the tent and lowered the MarsHydro SP250 and put the plants in there at night, so now they get 24/0 lighting. I'll bump the wattage after a few days for them to get used to the LEDs.
And yesterday morning, before I sprayed the plants down with 7% iso, I decided to follow through on this:
[These are all aphids, so this test is for aphids. Doesn't mean it's not valid for other pests.]
I sprayed one with Safers, one with 7% iso, and one with 1% citric acid. I waited two hours before I went back to check.
I'd post the after pics but you can't tell live from dead in still pics, so I'll just tell you the results:
Safers Insect Killing Soap had no moving bugs 2 hours after spraying. 100% effective.
This is what I have been recommending to anyone with bugs lately. I will be waiting longer before rinsing it off now, probably 24 hours since I have to spray in the mornings before the sun is on them.
7% iso had a few moving bugs 2 hours after spraying. After a second spray and another hour, the only moving bugs I saw looked like they were on death's door. 75% effective on one spray. 95% effective with two.
If you can't get your hands on Safers or don't have any currently, 7% iso will work, though I would spray twice drying time between.
1% citric acid spray seems to have left just as many live bugs after as before. 0% effective.
I never claimed the citric acid spray would work on anything but powdery mildew (it does!), and the strength recommended online for bugs was 50% stronger (1.5%), so I can't say if they're right or wrong. I will do more testing on that with my next flowering plant, as I need to check the effect of 1.5% on leaves, pistils, and trichomes. In the meantime, go with either a product with potassium salts of fatty acids once (like Safer Insect Killing Soap) or 7% iso twice.
For those who don't have access to this site:
...you make a 7% iso solution by mixing:
70% iso 1 part alcohol to 9 parts water
or
91% iso 2 parts alcohol to 25 parts water.
It rained here last night so I couldn't check the leaves again this morning. Looked like it might rain a little during the day, but the plants are all out anyway.
I hope you had a good weekend!
20210725_075855 Summer in the tent.jpg
Summer/Fall grow
Sour G, Chiquita Banana, Jack Herer
Sour G, Chiquita Banana, Jack Herer
I have no idea why I was leaving these under a dim bulb at night when the tent has been empty for over a week. Force of habit I guess, so I think I'm the dim bulb!
Anyway, I cleaned the tent and lowered the MarsHydro SP250 and put the plants in there at night, so now they get 24/0 lighting. I'll bump the wattage after a few days for them to get used to the LEDs.
And yesterday morning, before I sprayed the plants down with 7% iso, I decided to follow through on this:
I took three leaves with bugs on them and put them in separate ziplocs, where they sat in the shed while I drove up to Santa Barbara and back. Then I scoped them for live bugs:Maybe I'll bag a few leaves and save them for a better test...
[These are all aphids, so this test is for aphids. Doesn't mean it's not valid for other pests.]
I sprayed one with Safers, one with 7% iso, and one with 1% citric acid. I waited two hours before I went back to check.
I'd post the after pics but you can't tell live from dead in still pics, so I'll just tell you the results:
Safers Insect Killing Soap had no moving bugs 2 hours after spraying. 100% effective.
This is what I have been recommending to anyone with bugs lately. I will be waiting longer before rinsing it off now, probably 24 hours since I have to spray in the mornings before the sun is on them.
7% iso had a few moving bugs 2 hours after spraying. After a second spray and another hour, the only moving bugs I saw looked like they were on death's door. 75% effective on one spray. 95% effective with two.
If you can't get your hands on Safers or don't have any currently, 7% iso will work, though I would spray twice drying time between.
1% citric acid spray seems to have left just as many live bugs after as before. 0% effective.
I never claimed the citric acid spray would work on anything but powdery mildew (it does!), and the strength recommended online for bugs was 50% stronger (1.5%), so I can't say if they're right or wrong. I will do more testing on that with my next flowering plant, as I need to check the effect of 1.5% on leaves, pistils, and trichomes. In the meantime, go with either a product with potassium salts of fatty acids once (like Safer Insect Killing Soap) or 7% iso twice.
For those who don't have access to this site:
Dilution Calculator - for Percent Solutions
Dilution Calculator: Calculate percent solutions for accurate dilution in chemistry and laboratory work.
www.calkoo.com
...you make a 7% iso solution by mixing:
70% iso 1 part alcohol to 9 parts water
or
91% iso 2 parts alcohol to 25 parts water.
It rained here last night so I couldn't check the leaves again this morning. Looked like it might rain a little during the day, but the plants are all out anyway.
I hope you had a good weekend!
Thanks Otter! Once I figured out how to use it, it's pretty cool. I have some nice clear shots of the red in my son's beard.Enjoy
I haven't seen any negative effects with 7% iso, and I even sprayed the mutant little JH with it as a test. I remember @newty used it on young clones and they came through fine.Interesting test. Could also be that either of the first two methods take longer to be effective. But the instantaneous success of the iso is appealing. Did you notice any negative effects on the plant, maybe drier leaves or something? Hard to attribute any damage to any one thing though, I suppose.
#sciencewithshed
Yeah in that 1/8 tsp could be one ball and the rest powder or all balls and no powder, at least for the old version. My recommendation is and has always been weigh and mix large quantities at one time of v2 MC. The new grey powder is much more standardized though.1/8tsp = 1g.
LOL!I'm that drunken dart throwing clairvoyant. Well at least the drunk part.
Thanks for the visit Norcali! Aphids at this point. No spotting on the leaves.Drive by
thrip hatch?
You obviously skipped the very first line, where I said:You must know I sat up straight when I started reading about your bug killing tests! But then I was disappointed by your methodology. It was like our drunk test methodology when we were kids. My cousin and I would raid his father's bar and drink some scotch. If that didn't get us tipsy, we'd try some vodka. Still no luck, try a little gin. Whoa, the gin did the trick!
in a completely unscientific test
Thanks BL! It was your dollars that paid for the great info on why to keep waiting. They both need water almost every other day still (slowing down a bit, but still getting water that often), so I'm going to let them keep going.Nice trichome shots. Your pics illustrate what I've often observed on my plants: There's plenty of amber heads, yet they are still clear. Used to be really confusing for me until I decided to mostly ignore the amber and just focus on whether they are cloudy vs clear.
Thanks sb...Christmas in July!Thank You for the Info Shed ,Bluter and farside I will weigh it and set where i need to be at for now .. In my mind close is good enough LOL ,, Nice Pics. Shed always reminds me of Christmas for some reason (colors i guess)
Iso and Safers are both kill on contact. From what I read about 1.5% citric acid it does as well. Either way, repeated spraying every 4 days for a couple of weeks is always a good idea. Outside it should be mandatory!iso will mess up anything with a soft body as soon as it hits it. the problem with iso is it actually has to hit the bug directly to have an effect. iso evaporates quickly, it's the evaporation that is deadly to the pests, but that also means it's window of effectiveness is fairly small.
iso also will not destroy the eggs. it'll get a few, but not enough to break the cycle, meaning treatment has to continue.
Thanks for the visit Maritimer! When I retire I'll be ready for my lab coat, so don't measure for a few years yet.Ahoy there Shedster,
Tickled pink for your getting a scope.
LMK when you want me to size your lab coat.