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Author Topic: Strange pawpaw leaf issue  (Read 378 times)

Triloba Tracker

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Strange pawpaw leaf issue
« on: May 26, 2020, 08:05:49 PM »
Just one of my nearly 40 pawpaw trees I found has developed some odd blackening of leaves in the last week.
Itís only the newest leaves affected. Thereís nothing unique about the growing conditions of this tree. Itís right in the middle of all the other trees - same soil, water, sun, etc.

The only theory I have is root damage - about a week ago (timing lines up) I was planting yet another pawpaw (itís a sickness) about 6 feet away. In digging the hole I dug up about a foot long section of what looked like a pawpaw root, no more than 2mm in diameter. What you might see in the pot of a seedling tree.
It did not have a pungent smell like Iíve noticed when handling pawpaw roots in the past.

Any ideas?



SeaWalnut

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Re: Strange pawpaw leaf issue
« Reply #1 on: May 26, 2020, 08:12:08 PM »
Root damage .Its same as overwatering stress.
The doesnt have enough oxigen because of root damage or because of overwatering( the roots dont have enough oxigen).
I have a cherimoya that i think il loose her because of overwatering and sprouted similar leaves.
Pawpaw on the otther hand its more resistant than cherimoya probably ,because they like to grow in wet soil near rivers.
I think it will recover.

Triloba Tracker

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Re: Strange pawpaw leaf issue
« Reply #2 on: May 27, 2020, 01:10:52 PM »
Iíd love to have an easy answer but that root was so small and didnít have the pawpaw pungency.

Iím starting to think it looks like water logging, as you mentioned SeaWalnut. Being the younger leaves I think this matches up.
The problem with this theory is that itís received no more water than any other tree.
But maybe itís in a strange spot where water accumulates due to underlying bedrock formation etc. it is NOT in a low spot and water does not puddle.

NateTheGreat

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Re: Strange pawpaw leaf issue
« Reply #3 on: May 27, 2020, 03:38:09 PM »
I noticed a bit of this on May 12 this year, none since. I had more of an issue with it last year. I didn't tie a cause to it, but looking at my weather history we had a good amount of rain the night of May 11, the first since April 6. That supports it being caused by overwatering.



Triloba Tracker

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Re: Strange pawpaw leaf issue
« Reply #4 on: May 27, 2020, 03:42:25 PM »
I noticed a bit of this on May 12 this year, none since. I had more of an issue with it last year. I didn't tie a cause to it, but looking at my weather history we had a good amount of rain the night of May 11, the first since April 6. That supports it being caused by overwatering.



interesting - yeah we have just had nothing but rain for a week or more. still raining today. it's nuts. also abnormally cool temps for this time of the year. My maypop vines are about a month behind normal schedule.

Still just weird that it's only one tree but oh well. Just annoying, i'm sure it's not lethal.

NateTheGreat

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Re: Strange pawpaw leaf issue
« Reply #5 on: May 27, 2020, 04:46:51 PM »
I'm jealous. I'm having to water my potted plants 2-3 times a day. It's 97 and climbing, with 25% humidity. Did that mulberry bounce back?

Triloba Tracker

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Re: Strange pawpaw leaf issue
« Reply #6 on: May 27, 2020, 05:02:17 PM »
yeah, for my personal comfort the coolness is nice!

The mulberry is just sitting there still! arg. so weird. Thanks for asking. I will probably try grafting it anyway. I don't know what else to do.
I have thought of trying an anti-fungal drench using strong Daconil solution (what I have around) but that would be very experimental.

Triloba Tracker

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Re: Strange pawpaw leaf issue
« Reply #7 on: June 11, 2020, 11:24:48 AM »
update -
I made a video of this on my youtube channel
https://www.youtube.com/user/CutmasterCoolV

The tree has really taken a nosedive and is now dropping leaves. I'm bracing for a total loss.

Luisport

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Re: Strange pawpaw leaf issue
« Reply #8 on: June 11, 2020, 02:00:04 PM »
update -
I made a video of this on my youtube channel
https://www.youtube.com/user/CutmasterCoolV

The tree has really taken a nosedive and is now dropping leaves. I'm bracing for a total loss.
I'm sorry my friend...  :-\

 

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