I have 2 different kinds of thornless blackberries. I have had them for
7 years, no problems. I just discovered what I think is rust on one,
the Navahos. Is there any thing I should do other than digging them out
and getting rid of them?
Susan
PS
I have cut them all down to the ground. There are about 5 plants that
don't look like they have the rust, and I thought I would spray them
with milk. Will someone remind me what the ratio of milk to water is?
and also do you use skim, 1% 2% whole, powdered, or does it matter?
susan
I picked up a quart spray bottle of "everyday STAIN & ODOR remover"(
www.ecos.com )
at thelocal Trader Joe's grocery. I dont have blackberries, but do have
argentine ants, aphids and scale mucking around in some citrus trees ,out
back. I will dilute it some, as it seems too strong to use- as is.
I did try it -as is- for some ant trails on the patio( lead to the dog food
bowl). It worked great .
COntains: Water, Enzymes, ALcohol( derived from corn), BIodegradable
Surfactant( derived from coconut) and Lemon OIl. * DOes not contain SLS(
sodium lauryl sulfate).
bille
sandiego,ca
Other possibilties for a protectant spray would be compost tea or
perhaps that Ecco General Cleaner that was discussed on the list a few
weeks ago! The main thing is to make the leaf surfaces unfriendly to
germination of spores and keep them that way.
I hope you manage to stop it anyway!
Moira
--
Tony & Moira Ryan,
Wainuiomata, North Island, NZ. Pictures of our garden at:-
http://mywebpages.comcast.net/cherie1/Garden/TonyandMoira/index.htm
NEW PICTURES ADDED 4/Feb/2004
Thanks, Moira. I had intended to dig them out, but decided to wait and
see what the "group" thought. I suppose I'll be digging today. I also
will try the milk and compost tea and maybe the Ecco cleaner. I have
about 5 plants in that same row that don't seem affected yet, and a
whole 40' row of the other kind. I hope I can save those too.
you may not have it in NZ, but I understand Australia does have it. Saw
it on google.
susan
I was gone when this was being discussed and I think I deleted the
messages too soon. Can someone give me a thumbnail sketch as to what
this stuff does and where to get it?
susan
Susan Setzler wrote:
> I have 2 different kinds of thornless blackberries. I have had them
> for 7 years, no problems. I just discovered what I think is rust on
> one, the Navahos. Is there any thing I should do other than digging
> them out and getting rid of them?
Hi Susan
I think your wisest course would be not just to cut down the asffected
plant(s)but to actually dig up and destroy them. I have no personal
experience of this particular rust which doesn't occur in NZ, but the
recommendation in the only American account I have (Roedale's Garden
problem solver) calls for this course, which suggests to me that it is a
rust which does not only affect the leaves but may become perennial in
the premanent parts of the plant (some but not all this group of fungi
can do this).
Rusts are notoriously difficult to deal with by any type of spraying,
but it would certinly be a good idea to try and protect the remining
plants against any futer infection.
I am not at all sure milk is the best answer though. I have seen at
least one claim it works against rust, but nothing definite enough to
convince me so far. I wonder if people may have gone a bit overboard on
it, having seen how well it works for mildew and grey mould, and may be
asking more of it than it is able to deliver. However, by all means try
it. The usual recommendation is to use skim (aka fat-reduced) milk. it
doen't seem to matter if it is fresh or powdered (reconstituted to
normal milk strength), but it is commonly used at a dilution of one part
of milk to two of water. You would probably have to renew it every one
or two weeks for some time the be sure of it being effective, especially
if the plants should get rained on.
Other possibilties for a protectant spray would be compost tea or
perhaps that Ecco General Cleaner that was discussed on the list a few
weeks ago! The main thing is to make the leaf surfaces unfriendly to
germination of spores and keep them that way.
I hope you manage to stop it anyway!
Moira
--
Tony & Moira Ryan,
Wainuiomata, North Island, NZ. Pictures of our garden at:-
http://mywebpages.comcast.net/cherie1/Garden/TonyandMoira/index.htm
NEW PICTURES ADDED 4/Feb/2004
I use whole, most use skim, and it doesn't seem to matter. Usual ratio is 1 milk to 3 water.
Carol
Susan Setzler wrote:
Not so far I think, but ironically we might not be too sorry to see it
here as wild blackberry is one of our most troublesome weeds, capable of
growing to huge size and overwheming native bush if not watched. There
was once a local saying that there was only one blackberry bush in NZ
but it ran the length of the country (or words to that effect). There
are patches in our Wainui valley which tend to encroach on our rougher
park and open space areas and for many years the local Council used to
spray them annually a little before the fruit ripened -to the disgust of
many (us included) who liked to harvest the wild berries, but they seem
to have got discouraged in recent years and just attack the worst of
them manually from time to time when they get too much in the way.
Have any of you ever come across raspberry rust? It is quite common
here, but little bother. I see it on my own canes occasionally, but
apart from causing some premature leaf fall it has almost no impact on
the plants.
Moira
--
--
Tony & Moira Ryan,
Wainuiomata, North Island, NZ. Pictures of our garden at:-
http://mywebpages.comcast.net/cherie1/Garden/TonyandMoira/index.htm
NEW PICTURES ADDED 4/Feb/2004
I think that red rasps are more immune to it than black , but not sure.
susan
Susan Setzler wrote:
> I think that red rasps are more immune to it than black , but not
> sure.
Hi Susan
Quite possibly, as its name suggests, the rust (Phragmidium rubi-idaei)
on the raspberries (Rubus idaeus) is a different species, but I
do not have the scientific name of the blackberry rust so I can't be sure..
Rusts are a highly specialized group and many are confined to very few
hosts or even a single host species.
it is certainly of little importance anyway on the raspberries.
Moira
--
Tony & Moira Ryan,
Wainuiomata, North Island, NZ. Pictures of our garden at:-
http://mywebpages.comcast.net/cherie1/Garden/TonyandMoira/index.htm
NEW PICTURES ADDED 4/Feb/2004
does this mean that i can plant something else in the blackberry spot,
that is susceptible to rust, although a totally different species, and
it won't get the rust. I don't know if I will or not., but wanted to
know.
susan
great, thanks.
susan
Susan Setzler wrote:
> does this mean that i can plant something else in the blackberry spot,
> that is susceptible to rust, although a totally different species, and
> it won't get the rust. I don't know if I will or not., but wanted to
> know.
Yes Susan, if it is another totally different species susceptible to
rust it will react only to its own specialized rust species and will not
catch the blackberry one. All rusts are quite specific diseases even
though they may look pretty similar. They stick to their proper hosts
and cannot cross-infect.
Moira
--
Tony & Moira Ryan,
Wainuiomata, North Island, NZ. Pictures of our garden at:-
http://mywebpages.comcast.net/cherie1/Garden/TonyandMoira/index.htm
NEW PICTURES ADDED 4/Feb/2004
I wonder how bad that'd effect wild blackberries? I have a little
bramble of wild blackberries growing here - thorny as heck - that I'd
hate to lose.
Be well,
Mike
--
Zone 8, Texas
http://www.taroandti.com/ Exotic Plants and More...
http://www.mjv.com/ Home...
Eric-Michael Ashfold MacCionnaith wrote:
