Mango Problems

monitoMarch 31, 2014

Hello,

I hope that someone here may be able to help me :)

I recently acquired a property that has 3 mango trees. The previous owner said that they have never given any fruit. That seems a bit strange to me to I'm trying to figure out why it may be.

All of the leaves have something on them that shouldn't be there and I'd guess that has probably got something to do with the lack of fruit.

Attached is a photo of one of the leaves. Has anyone got any idea what these white spots are and if they could be the cause of the lack of fruit. If so, how can I 'fix' my trees. If not, any ideas why we're not getting any fruit?

Any help would be gratefully received.

Thank you!

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puglvr1(9b central FL)

It looks like scale and possibly powdery mildew??

You can bring a couple of leaves to a local fruit nursery prefably one that sells Mango trees, they should be able to tell you exactly what it is...

Since its not bearing any fruit...I would apply a Citrus Fertilizer on the tree and water it in...sounds like it could use a good fertilizer...but you will need to treat the bugs or whatever (might be fungus along with scale) first...how old are the trees (appx)? How big? What zone do you live in...its not on your profile?

    Bookmark   March 31, 2014 at 4:11PM
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tropicbreezent

If you're in Columbia South America there's a large variety of climates. Mangos don't like a rainforest/cloudforest climate, they become subject to a lot of fungus problems. Their best climate is one with distinct wet and dry season, summer wet and winter dry. A lot of Columbia would be perfect for mangos but if you're in rainforest or at a high altitude mangos won't do any good.

    Bookmark   March 31, 2014 at 5:07PM
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monito

Hello, thank you for your response.

I'm in Medellin, Colombia, SA. I believe my zone to be 9A.

The trees are about 4-6 meters high - I have no idea the age that equates to.

    Bookmark   March 31, 2014 at 5:27PM
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GrassFlats

Yes, it looks like you have scale insect on the leaves and maybe a fungus, also the leaf is not very green so likely lacking nutrients so i would do as pugs said and fertilize

    Bookmark   April 1, 2014 at 10:00AM
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tropicbreezent

Looked up the Medellin, your lowest monthly average rainfall is 50mm in January, pretty much making that a rainforest climate. The annual average maximum temps are low and the average minimums comparatively high, not much variation between day and night, nor throughout the year. That in itself isn't a problem for mango growth, but it's absolutely ideal for fungus to which mangos are highly susceptible. Flowers are also very susceptible to fungus and mostly die before they can set fruit. Your best chance with these is to regularly apply a fungicide, especially during flowering. Also keep up a good fertiliser regime, the healthier the plants the more easily they will ward off disease.

I also looked up the zone for Medellin, it's 11b, which is more like what the climate figures suggest (www.plantsdb.gr/en/general-cultivation/hardiness-zones/275-hardiness-zones-central-south-america).

    Bookmark   April 2, 2014 at 8:00PM
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