How to prevent erwinia?

[richgarrison]

This was mentioned in the AOS magazine before but I have been using this and most of the time if caught early when small you may even save the infected leaf. I use Neutrogena for stubborn Acne. It is basically a benzoyl peroxide. Just use a cotton bud and apply around the infected part. If it is already inside the tissue creeping up, i just cut the leaf then apply alcohol,,dry, then apply this cream. Some infection does start from within specially with specimen plants. I just cut that growth to the base and apply the cream on the cut and let it sip in. Let it dry for at least three days.

Any chance you could reference that article?

 

[gego]

It might have been in one of the articles last year. About general orchid culture. You might be able to search in the AOS website. Or you may search here as this was also mentioned here. It is basically the same peroxide in hydrogen peroxide. It oxidize any organic matter. This has only 10% and is sticky so it does not spread easily to areas you don't what to be treated. A 3% hydrogen peroxide is strong enough to enter into the flesh and will burn a leaf especially if it is a young leaf. That is why I prefer this.

 

[Elite Orchids]

I use bacillus subtilis and amyloliquefaciens, first one commercial name is serenade it works also against pseudomonas and other bacteria as well as fungi always as preventative

hi - i have heard of this, but not found it in small quanities - the big tubs are £150 each - do you think it is worth it? does it genuinely make a difference? can you apply in the same mix as the fertiliser?

 

[Phaladdict]

hi - i have heard of this, but not found it in small quanities - the big tubs are £150 each - do you think it is worth it? does it genuinely make a difference? can you apply in the same mix as the fertiliser?

Mark, I'm Gianfranco, will send you some to try, it exist also in kg box for less then 40 euros

 

[richgarrison]

i went hunting for it, and found it ... it's under the Bayer brand

 

[Elite Orchids]

i went hunting for it, and found it ... it's under the Bayer brand

thank you - there seems to be a liquid and powder version.

 

[richgarrison]

@Elite Orchids ...not that it is going to be very definitive, i'd love to hear about your experience (positive/negative, can't tell any difference)... i will likely give it a try if i can get some with minimal effort... my expectation is that even if this 'could' work effectively, the barrage of chemicals i use on a relatively frequent basis will kill off any beneficial bacteria serenade may provide.

 

[Ray]

I use bacillus subtilis and amyloliquefaciens, first one commercial name is serenade it works also against pseudomonas and other bacteria as well as fungi always as preventative

of the approximately dozen microbes in Quantum-Total, Bacillus amyloliquefaciens and B. subtilis are the two with the highest guaranteed concentrations.

@Elite Orchids ...not that it is going to be very definitive, i'd love to hear about your experience (positive/negative, can't tell any difference)... i will likely give it a try if i can get some with minimal effort... my expectation is that even if this 'could' work effectively, the barrage of chemicals i use on a relatively frequent basis will kill off any beneficial bacteria serenade may provide.

Rich - What chemicals do you need to use that much? Generally, I have found that regular use of such probiotic products preclude the need for other controls.

 

[richgarrison]

between the quarterly sprays for scale etc (distance, acephate, merit) ... and the occasional pageant sprays when i see more rot than i can stand...

that's about it (but to me seems significant)...

sometimes when we do the quarterly spray late in the day we'll add some copper (Phyton)

 

[Ray]

Honestly, I believe that if a you were to do a regular probiotic treatment, you could likely stop all of those.

 

[Elite Orchids]

Honestly, I believe that if a you were to do a regular probiotic treatment, you could likely stop all of those.

Ray - what are you thoughts on Serenade - either liquid or powder?? i use a weak h202 as a flush wash once a month - would this instantly kill the good bacteria in Serenade? thanks

 

[richgarrison]

@Ray Ya i hear ya... and with the summer months coming and my rot typically reducing in instances... i may in fact try that..

but even with the good weather and ventilation i found this while watering today... brand new hangianum seedling from Sam. before and after hacking. i suspect i'll lose it. :-(

 

[Phaladdict]

I have to say thath to me erwinia happens almost every time I recieve new plants, from some vendors more than others... Then apart this it happens just once in a while but with new plants is starting to be a problem these days

 

[Ray]

Ray - what are you thoughts on Serenade - either liquid or powder?? i use a weak h202 as a flush wash once a month - would this instantly kill the good bacteria in Serenade? thanks

Serenade is just a Bacillus subtilis inoculant, but any disinfectant/biocide will kill the microbes in any product.

 

[fibre]

I have to say thath to me erwinia happens almost every time I recieve new plants, from some vendors more than others... Then apart this it happens just once in a while but with new plants is starting to be a problem these days

Often those Paphs are grown in warm climate with lot of N and under low light. They grow too fast! That's why they are so prone to rot. And those Paphs are very stressed if you don't give them very similar conditions. You have to adapt them very slowly.

 

[Duck Slipper]

I will agree with rot occurring on new plants. I just assumed it was from the stresses of changing environment and shipping. Being thrown into a box for a couple days (at the shortest) with strong changes in temperature, would certainly increase susceptibility to rot. Also, damaged tissue, that might not even be visible, would be highly susceptible to rot. Duck