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Sick Jaboticaba

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Becs starts with ...
I have two jaboticaba trees, Both are well established. Planted in well draining soil, and fertilised semi regularly. The smaller one lost 95% of the leafs about August last year, while the bigger tree has lost substantial amounts of leaf in the last month (1 side seems fine, otherwise near bare). I can’t figure out why, they’ve been fine for 2 years (since we moved in) and have fruited fine & I havent changed anything?
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Becs
Esk, Qld
10th January 2018 8:15pm
#UserID: 17688
Posts: 2
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Fruitylicious1 says...
Hi Becs

I can observe that your Jabos are planted in the middle of the lawn (the smaller one). Have you or anyone unknowingly ever used any herbicide near your jabo like weed and feed or glyphosate. A healthy tree will suddenly goes down south if they touch any herbicide whether in their canopy or in their root system through leaching. Another suspect are lawn grubs (elephant beetle larvae and apple weevil larvae). Those critters likes to chew plant roots and serious injury to roots will eventually be exhibited in reduced foliage canopy growth and leaf loss. They might have developed a liking to your jabo root system. These crims can be decimated by pesticides with imidacloprid as an active constituent. Do a further investigation and backtracking with regards to my prognosis. Also closely examine the main trunks and boughs for any mechanical or biological injury where sinister pathogens might enter the trees cambium layer and cause havoc to its health. An obvious sign is an exudate (bleeding, oozing wound) that might get infected.

It's also worth to clear at least one meter around the trees of grass and weeds and organically mulched to reduced water and nutrient competition from the lawn.

Happy Gardening :-)
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Fruitylicious1
TAMWORTH,2340,NSW
12th January 2018 11:49am
#UserID: 16885
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Original Post was last edited: 12th January 2018 8:51pm
Fruitylicious1 says...
Hi Becs

What happened to your Jabos? Did they recover?

Happy Gardening :-)
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Fruitylicious1
TAMWORTH,2340,NSW
9th February 2018 9:15pm
#UserID: 16885
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Becs says...
Hi Fruitylicious1,

The smaller tree is pretty much just sticks. There's about 10 green leaves, but they die off as soon as they've come on.

The larger tree lost about 60% of the existing canopy, but has sprouted new leaves in the last month & they haven't died off as yet.

I would be very surprised if the smaller one survives but fingers crossed the larger one does.

They were affected by Weed & feed....unfortunately they had to get over 2 sprays. My hubby had resprayed only a couple of days before my original post.
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Becs
,,NT
17th March 2018 8:28am
#UserID: 17688
Posts: 2
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Fruitylicious1 says...
Hi Becs,

My first gut feeling was right a weed and feed. Jabos are very sensitive to chemicals especially through their root system. They don't like saline water or soil either. Try to water them profusely on a regular basis to try to flush out the residual toxins to help the jabos to recover. If you have rain water tank use rain water, jabos love rain water. If your winter temperature doesn't go below 5C degrees you can still prune them now and remove all the dead branches up to the healthy tissue to force them to sprout new shoots and leaves also to remove plant material that have been damaged, and hope this time they (leaves) will stay for good most especially the smaller one.

Happy Gardening.
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Fruitylicious1
TAMWORTH,2340,NSW
17th March 2018 11:25am
#UserID: 16885
Posts: 567
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Original Post was last edited: 18th March 2018 6:55am

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