Provado new formulation

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ralphrmartin
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Re: Provado new formulation

Post by ralphrmartin »

Paul D wrote: Sat Mar 09, 2019 1:32 pm This is actually very interesting. I'm wondering about trying this
https://www.amazon.co.uk/gp/product/B07 ... SCN6&psc=1
On some non-precious plants. Looks like 49 degrees C for 20 mins.
Hmm, is it April 1st already? :grin: :grin:
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jfabiao
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Re: Provado new formulation

Post by jfabiao »

Paul D wrote: Sat Mar 09, 2019 1:32 pm
Chris L wrote: Fri Mar 08, 2019 4:58 pm X( Dynamite. I think that is the only thing that will kill mealies. :oops:

My Dad mentioned a while ago that he had heard on the radio someone saying they watered/sprayed their plants (probably not cacti/succulents) with water over 40oC as that effectivly started to cook the bugs. Suppose it is the old Greenfly remedy "spray with warm soapy water".

https://www.ncbi.nlm.nih.gov/pubmed/10902365
https://www.researchgate.net/publicatio ... dococcidae

Not tried it yet as it has been winter.
Also not sure what it will do to roots and plant...... :roll:
This is actually very interesting. I'm wondering about trying this
https://www.amazon.co.uk/gp/product/B07 ... SCN6&psc=1
On some non-precious plants. Looks like 49 degrees C for 20 mins.
I tried this method - sort of: what I read then was 15 minutes at 45C - on some mealie infested Echeveria and it cleared them BUT they eventually returned. Either the extra minutes and degrees are necessary to get to the eggs or it needs to be repeated, which is quite a nuisance. It may not be too inconvenient to give a newly acquired, ready to be repotted plant a hot bath, but to take it off its pot to do a second run is not practical.
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MikeT
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Re: Provado new formulation

Post by MikeT »

Chris L wrote: Fri Mar 08, 2019 4:58 pm Dynamite. I think that is the only thing that will kill mealies.
ralphrmartin wrote: Sat Mar 09, 2019 7:47 pm Even if you douse the whole plant in meths?
Of course this is going to be very expensive if you need to treat a whole collection
It doesn't require a great leap of imagination for dowsing the whole collection in meths to turn into something akin to dynamite (just one bright spark, perhaps...)
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Re: Provado new formulation

Post by Liz M »

I never found Provado very effective for mealie bugs and used to use meths painted on to kill them. Then I found it marked leaves badly on the Crassulaceae family and in some cases nearly killed them. So, I gave up with that. Then I tried neem oil in a suspension of washing up liquid. That was reasonably effective but then I heard horror stories of that killing plants, it seems to be very good against RSM and cleared it in some cacti. In the end I decided to try dilute washing up liquid in a fine spray. I sprayed it all over the infected plant, then later washed it off with a fine water spray. This has been extremely useful, except that it must be applied frequently and best during the growing season. I have cleared it off many plants that used to have the mealies lurking in crevices and I have had more success by this method than anything previously. It has the advantage of being cheap, as well.
Obsessive Crassulaceae lover, especially Aeoniums but also grow, Aloes, Agaves, Haworthias and a select number of Cacti.
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kohinoor
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Re: Provado new formulation

Post by kohinoor »

RSM is not an insect.
Neonicotinoid did not affect them.
In fact some study show Neonicotinoid even boost RSM growth.

ref:
Neonicotinoid Insecticide Imidacloprid Causes Outbreaks of Spider Mites on Elm Trees in Urban Landscapes

Adrianna Szczepaniec , Scott F. Creary, Kate L. Laskowski, Jan P. Nyrop, Michael J. Raupp
Published: May 31, 2011https://doi.org/10.1371/journal.pone.0020018
From taiwan. hot humid subtropical island.
Pachypodium grow like weed here.
(not really, but u get the idea hot sunny rainy)
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Re: Provado new formulation

Post by habanerocat »

Paul D wrote: Sat Mar 09, 2019 1:32 pm
Chris L wrote: Fri Mar 08, 2019 4:58 pm X( Dynamite. I think that is the only thing that will kill mealies. :oops:

My Dad mentioned a while ago that he had heard on the radio someone saying they watered/sprayed their plants (probably not cacti/succulents) with water over 40oC as that effectivly started to cook the bugs. Suppose it is the old Greenfly remedy "spray with warm soapy water".

https://www.ncbi.nlm.nih.gov/pubmed/10902365
https://www.researchgate.net/publicatio ... dococcidae

Not tried it yet as it has been winter.
Also not sure what it will do to roots and plant...... :roll:
This is actually very interesting. I'm wondering about trying this
https://www.amazon.co.uk/gp/product/B07 ... SCN6&psc=1
On some non-precious plants. Looks like 49 degrees C for 20 mins.
In combination with this what would you recommend as the best method to remove the buggers form the staging?
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Re: Provado new formulation

Post by Chris L »

habanerocat wrote: Wed Apr 22, 2020 3:54 pm
Paul D wrote: Sat Mar 09, 2019 1:32 pm
Chris L wrote: Fri Mar 08, 2019 4:58 pm X( Dynamite. I think that is the only thing that will kill mealies. :oops:

My Dad mentioned a while ago that he had heard on the radio someone saying they watered/sprayed their plants (probably not cacti/succulents) with water over 40oC as that effectivly started to cook the bugs. Suppose it is the old Greenfly remedy "spray with warm soapy water".

https://www.ncbi.nlm.nih.gov/pubmed/10902365
https://www.researchgate.net/publicatio ... dococcidae

Not tried it yet as it has been winter.
Also not sure what it will do to roots and plant...... :roll:
This is actually very interesting. I'm wondering about trying this
https://www.amazon.co.uk/gp/product/B07 ... SCN6&psc=1
On some non-precious plants. Looks like 49 degrees C for 20 mins.
In combination with this what would you recommend as the best method to remove the buggers form the staging?
Maybe a steam cleaner? Or a wipe down with a meths covered cloth.

At the moment I am trialing diatomaceous earth on the plants themselves. But I do plan, while I am stuck at home to examine every nook and cranny of the GH I can find.
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Re: Provado new formulation

Post by Skribbane »

For what it's worth, I deal with mealies on my phalaenopsis orchids by cranking the boiler up to 50° then washing them and hanging them upside down for a few days to dry. Minimal to no damage. They do come back eventually but I have so many plants I expect the things are in the air at this point...!
Vice-chair Sheffield branch & Internet Committee member. @xericdelights on Instagram. 700 plants later and I still haven't picked a favourite genus!
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