Mango and Lychee tree leaf burn (forum)

Raj starts with ...
Hi
I have these two trees, Lychee - around 1.5 year old, about 3 feet, very slow growing and mango - around 4 years old, 6 feet, both have some leaf burn, as seen in pictures
What could this be from, and what do i need to do
The Mango trunk has a LOT OF CRACKS IN THE BARK,. what is that because of and what should i do. it doesnt look to healthy

Regards
Raj
Pictures - Click to enlarge

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Time: 11th November 2011 3:55pm

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About the Author Raj
Sydney
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vickey says...
It seems, your mango tree is under attack of scales. Check out if you found some flat round insects, about 2-3 mm in diameter and can be
found on leaves, stems and fruit. If there is no insect then you inform immediately.

Time: 12th November 2011 2:32am

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About the Author vickey
Pakistan
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fit4fun4life says...
Feed the soil. Plants are like us. If we don't eat well we get sick and disease runs amuck. Load your soil up with heaps of organic matter, blood and bone, maybe lime...anything that will feed the soil as per in nature. Then cover it with mulch to let the worms and bacteria do their thing to break it down to be bio-available for the tree. The tree will then heal itself and repel undesirables as we would if we ate as nature intended. Good luck.

Time: 12th November 2011 9:43am

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About the Author fit4fun4life
Gold Coast
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Nick says...
I agree with fit4fun4life except maybe dont give your lychee much fertiliser- i find they get fertiliser burn easily (see https://www.daleysfruit.com.au/forum/browning-leaves1/ :P)

Time: 12th November 2011 9:56pm

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About the Author Nick T
Altona, VIC
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Tabs says...
Hi Raj, you will find that your leaves may indicate soil that is too wet or too dry or maybe wet dry wet dry wet etc. Both of these trees hate wet feet and succumb to root rots very easily. Organic matter will help to moderate changes in soil temp, moisture, fertilizer release etc. Make sure the soil is not compacted if in heavy soils or too dry in sandy soils. Whatever you do, do not fertilize with water soluble synthetic fertilizers as this can easily kill your trees. Use seaweed in preference to any high nitrogen fertilizers.

Time: 15th November 2011 11:01am

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About the Author Tabs1
Sydney
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D@!V! says...
The crack in the bark is may be due to mango stem borer and the leaf tip drying is may be due to salinity in the soil or due to excess water in the dry season. check the bark for the webs and excreta of the pest, in that case it can be black headed caterpillar. In case of stem borer u can find the grubs (immature) form making tunnels in the bark. Remove the grubs and u can keep a cotton soaked with kerosene inside and seal the part with some mud.

Time: 13th June 2015 4:51pm

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About the Author D@!V!
hi raj
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