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Paw Paw Tree

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Kerri starts with ...
HI
Our Paw Paw tree has lots of fruit but it has small black spots all over it and also on the leaves. It also doesn't have many leaves on the tree. could it have a disease or a pest eating it?
Thanks Kerri
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Kerri1
Brisbane
5th October 2008 1:46pm
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Wayne says...
Is this what the leaves look like Kerri, if so here is something that might help. ""Black Spot on Pawpaw
Adequate nutrition is as much a tool in disease control as the use of sprays. Plants deficient in potassium, phosphorous and magnesium are more susceptible to attack by black spot and powdery mildew. Simply increasing the potassium (sulphate of potash and/or lucerne mulch), phosphorous (rock phosphate or chicken manure) and magnesium levels (Epsom salts) helps to make plants more resistant to disease. Pawpaws are most susceptible to black spot disease during the cooler months. Spraying with sulphur or copper based compounds prior to the onset of the cool weather and watering with liquid seaweed can help reduce the severity of infestations. ""
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Wayne
 
5th October 2008 4:28pm
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Theo kuys says...
I have 4 threes some are growing to tall all the leaves shriveled up so I chopped them half way down and put a can on top of it and the fruit has that black spot on it so what can i do Theo
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Theo kuys
Capalaba 4157
2nd September 2009 1:18pm
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Theo kuys says...
I also have the same problem with my paw paw tree as Wayne and some sort of weeping and it leaves a solid residue on the paw paw at one stage it lost all the leaves the fruit tasted o k so what can I do theo
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Theo kuys
Capalaba 4157
17th September 2009 7:43pm
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Ali Rose says...
Hi,

I Work at Nashville State School in the Permiculture Garden and year 2K are investigating how to get rid of blackspot of the paw paws. We supply these as organically grown to breast feeding mothers from the playgroup to help with their milk supply and as such do not want to spray with copper sulphate. Other then the above are there any other known methods for helping our trees beat this?
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Ali Rose
Brisbane
26th October 2009 5:09pm
#UserID: 2948
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Wayne says...
Hello Ali Rose
Are they spotting on the tree or only after you pick them. Perhaps sprinkle a good coverage of dolomite around under the tree and water it in. I would consider spraying the fruit with a solution of pure uncented liquid soap and water, say 30ml per 2L water, it must be uncented.
The others might have better ideas to help you out as it is for a good cause, congratulations to you and the kids
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Wayne
Mackay QLD
26th October 2009 7:06pm
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Julie says...
Organic growers are allowed to use some copper sulphate, though not on a regular basis. It's not good for worms, but it is a natural mineral.

Most Australian soils are lacking in copper. As an organic grower for 25 years, I have had to use it occasionally.
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Roleystone WA
26th October 2009 8:40pm
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charles b says...
I have aproblem with paw paw rptten around the stem just off ripe then dropping off can anybody help
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charles b
Nerang QLD
27th May 2010 1:59pm
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Barry says...
can you use lime sulpher on pawpaws,i think i got the wrong one.
Barry
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Barry10
Brisbane
3rd June 2010 7:30pm
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jenny says...
hi JULIE
my mane Jenny .I live in wa i would like to ask you can i have some of your paw paw leaves to make some medication for my cancer husband.
please if you can help please email me
thinh_nhu_y@yahoo.com
thanks
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jenny9
w.a
19th October 2010 3:43pm
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Julie says...
Sorry jenny, I don't have any paw paw growing. My comment was only re the use of copper sulphate.

Maybe try advertising in your local paper or Quokka.

Good luck.
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Roleystone WA
19th October 2010 8:34pm
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Richard says...
I have a problem with just after manual pollination of the paw paws when the fruit begin to appear they drop off. What could possibly be the reason. These are 10 ft trees.
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Richard2
Indiana
25th June 2011 1:53am
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Brendan says...
Hi Richard,
The guru here says; 'Pawpaws falling off, trees need gypsum AND dolomite'.
Gypsum @ 4 handfuls per sq metre/yard, dolomite @ 2 handfuls per sq metre/yard.

I'd give it some sulphate of potash fertilizer as well, 1 handful per sq metre/yard.

Mulch well, but keep away from the trunk.
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Brendan
Mackay, Q
25th June 2011 7:05am
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Mike says...
I lose the plants routinely and try to have 6 or 7 with new recruits coming on.Paw Paws are very prone to root rot diseases in heavy soil after wet weather, 'bunchy top',fungal spotting and fruit rots (like mango fruit rot).While they can grow through these occasionally when growing conditions are good you have to accept casualties.They don't like excess fertliser close to the trunk,too much lime,salt or chlorides and fruit drop and leaf burn can result.
Sick trees can be mulched, supplied with friendly 'organic' fertilisers,light dolomite,micronutrients and P and K.Copper oxy or mancozeb doesn't usually seem to cure fungal problems and there are no hot water or chemical dips that treat rot rot in fruit.
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Cairns
25th June 2011 8:34am
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Wayne says...
Guys
Richard has posted from Indiana so will be talking about a different fruit I think
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Wayne
 
25th June 2011 4:18pm
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Mike says...
I was talking about C.papaya not Asimina.
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Cairns
25th June 2011 4:21pm
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Jason says...
On most forums there's not really such a wide climate range as there is on this one so there not usually a mixing of Queenslanders with the Californian/Southern Australia/NZ climates. But because we have such a wide range here it's best to use Papaya when talking about c. papaya to get in line with the rest of the world outside the Queensland border
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Jason
Portland
25th June 2011 4:46pm
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Wayne says...
Jason
"it's best to use Papaya when talking about c. papaya to get in line with the rest of the world outside the Queensland"

What do you mean "c. papaya"
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Wayne
 
25th June 2011 5:52pm
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Jason says...
Carica papaya is its latin name (official name)
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Jason
Portland
25th June 2011 6:07pm
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Wayne says...
http://www.daleysfruit.com.au/fruit%20pages/pawpaw.htm

So what do you think, perhaps we should refer to the American pawpaw as Asimina triloba

It is confusing to some for sure
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Wayne
 
25th June 2011 6:09pm
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Original Post was last edited: 25th June 2011 6:27pm
Jason says...
Well for me Pawpaw is automatically Asimina but I always look for a clue that the person might be talking about Papaya just in case. It's kind of annoying though. I didn't realise Dayleys were using Pawpaw to advertise Papaya on their site, that's not helping the problem at all :/
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Jason
Portland
25th June 2011 8:28pm
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Mike says...
For most Australians paw paw is the only name for C.papaya having long ago accepted the west indian name for the fruit rather than american.Interestingly the name paw paw for Asimina came about due to its resemblance to C.papaya fruit and the early yanks chose the WI common name for C.papaya.Asimina is often called wild banana,kentucky banana and lots of other names.
Saying all that it is probaly better to say Asimina and papaya to avoid confusion.
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Cairns
25th June 2011 8:46pm
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Carolyn says...
I have two young red papaya trees and they were coming along nicely, however nearly 2 weeks ago my neighbour accidentally sprayed his citrus trees with Gramoxone (a herbicide) which drifted over to my backyard, leaving brown spots on everything it touched. The leaves on the papayas were also affected but they didn't seem to suffer too badly, until today when the younger leaves at the top started wilting. I noticed the trunk up near the new shoots is looking sort of puckered and dimpled but am not sure if this was there before or is it a result of the spraying. Does anyone know of a disease that could cause this?
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Carolyn
Buderim
9th January 2012 7:43pm
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snottiegobble says...
"accidently sprayed his citrus trees with
Gramoxone" Er, I dont think so Carolyn!
This is like a farmer in the Otways who ariel sprayed his crop & completely ruined a thriving vineyard next door. It took years for the vines to recover & stop producing mutant growth & grapes!
NOT BLOODY GOOD ENOUGH!
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snottiegobble
Bunbury/Busso (smackin the middle)
10th January 2012 5:58pm
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Carolyn says...
No, it's not good enough! The guy is an absolute idiot ... what he was trying to do was spray some "big black ants" that were climbing up and down the trees. The spray he intended to use was also used to treat termites, but I can't remember the name of it now! I don't know which was worse!!
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Carolyn
Buderim
11th January 2012 11:40am
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Jantina says...
GGRRRRR! that is precisely my beef against people who spray toxic chemicals around. Some of them are incapable of thinking past their own immediate want ie. get rid od some ants. I have experienced being covered by chemicals from aerial drift twice when pilots ignored the fact that strong winds were blowing, had my plants killed by careless spraying and seen similar events to that which Snottie refers to.
Complaints to authorities fall on deaf ears. And some of that stuff persists in the environment for hundreds of years.
It,s time people were made accountable for their actions.
Poisons are far too freely available for any idiot to spray and cause irreversible damage.
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Jantina
Mt Gambier
11th January 2012 12:21pm
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john says...
Er, excuse me Miss, but toxic chemicals do not persist in the environment for "hundreds of years".Hyperbole just diminishes credibility.
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11th January 2012 4:18pm
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Mike says...
Unfortunately the use of pesticides is here to stay and there is actually a trend towards less toxic ones.The with-holding period for insecticides and fungicides gives a clue to their relative breakdown rates.There aren't anywhere near as many bio-accumulating ones around.Herbicides are also not as strong or persistent as in the past.There are a few baddies however that can cause environmental harm and adversely impact people.You can access the particulars of just about all of them and see what their specific risks are, their LD 50's etc.There are huge problems with inappropriate uses, concentrations,uses that expose people,animals and watercourses to poisoning.Regulatory authorities are weak and often unresponsive and much could be done to tighten usage.
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Cairns
11th January 2012 5:33pm
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john says...
I have an horticultural text from the 1950's that recommends lead arsenate as a treatment for a wide variety of fruit problems. We have moved on. Most of us are attempting to be organic but if that means we end up with no fruit and need to purchase what we did not grow ourselves then excess purity is a little futile.
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12th January 2012 6:28am
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Carolyn says...
In the meantime, what can I do about my pawpaw problem, regarding the young leaves wilting and the top of the plant looking dehydrated. They're no more than a metre tall, and don't seem to be growing very vigorously since they copped the spraying. I only bought them a couple of months ago. Most of the trunk seems fine, so if I cut the affected top part off will it branch out the sides?
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Carolyn
Buderim
13th January 2012 6:37pm
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snottiegobble says...
Try the old tin can on the stump trick, Carolyn. It looks like you need to get well below the damage done to give the tree a chance to recover with entirely new growth!
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snottiegobble
Bunbury/Busso (smackin the middle)
14th January 2012 12:40am
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Carolyn says...
Thanks for that - never heard of that trick (novice pawpaw grower here). Presumably I just cut the top off and the tin can protects it from the weather until it seals over?
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Carolyn
Buderim
14th January 2012 11:20am
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amanda says...
Hey Snottiegobble...a friend is growing a very nice paw-paw tree in Bunbury...not a bad effort maybe? :)
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amanda19
Geraldton. WA
14th January 2012 12:57pm
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snottiegobble says...
Amanda,did he/she protect it with plastic during the winter like I did?. I would like to know because my papaya is headed for 3 mts & it will be difficult this year! I was using crossed poly pipe to support the plastic which only comes in 2m wide rolls! Thats builders "grunt" by the way & splits along the fold after about 6 months, worse luck!
Carolyn,thats what they do to stop bunching tops initially caused by some sucking bug! Never tried it myself, I just picked the best of the bunch, cut all the other growths off & away she went after a good feed of potassium s.
& seasol.
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snottiegobble
Bunbury/Busso (smackin the middle)
14th January 2012 7:27pm
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amanda says...
Yes protected I think SG..will see what I can find out. What about a big umbrella? hehe...
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amanda19
Geraldton. WA
15th January 2012 2:11am
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QLDhervey bay says...
great site,good info.just registering for r email.
I 'd like to ask 1 question.How long and how far does the fungus live for and what distance travels.Kind regards on seafront.
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QLDhervey bay
dundowran beach
25th September 2013 12:04pm
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Elaine stiles says...
My paw paw tree looks so unhealthy and when i cut the leaf stem lengthwise it is a horrible grey flesh inside. I live in a northern Brisbane suburb. The trunk looks dry and some pock marks. ???any clues,
thanks
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Elaine stiles
Margate
19th August 2015 11:11am
#UserID: 12216
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Elaine woods says...
My paw paw tree looks so unhealthy and when i cut the leaf stem lengthwise it is a horrible grey flesh inside. I live in a northern Brisbane suburb. The trunk looks dry and some pock marks. ???any clues,
thanks
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Elaine woods
Margate
19th August 2015 11:13am
#UserID: 12217
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jimroz says...
It looks like it might be Fruit Spotting Bug. No cure, but you can try cutting tree off below the damage to healthy stem and put a tin can on top to stop rain getting in. Give it a good fertilize with some Dolomite, well rotted manure and Potash (Fertilizer info from Brendan in another forum),and new growth should pop out.Picture is various stages of the bugs life cycle. Good Luck!
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jimroz
Townsville, QLD 4810
1st March 2016 7:08pm
#UserID: 13413
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Original Post was last edited: 1st March 2016 7:11pm
Torrens says...
Our pawpaw are very marked on the skin but wonderful and sweet inside. Should we worry about the skin. The trees look great and the fruit bountiful and nice size. Just marked ....!
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Torrens
Urunga NSW
12th June 2018 11:06am
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