Disease of guava

Guava    Bulawayo Zimbabwe

I think it is guava rust but the fruits are also splitting open long before and during ripening. How do I treat it?

Posted by: Graeme Jones (1 point) Graeme Jones
Posted: March 2, 2015


I do not think this is rust (a fungus). I think it is damage due an insect feeding on both the leaf and the fruit. I would think a sucking insect in the family Coreidae which are a large family of predominantly herbivorous insects (leaf-footed bugs) that belong in the hemipteran suborder Heteroptera.

The inject their sucking mouthparts into the plant.

It is also possible it could be an oriental fruit fly. (Bactocera genus)

Can you try and set up some sticky insect traps?

How many Guava plants are you growing?

Posted by: David Hughes (54 points) David Hughes
Posted: March 6, 2015

Graeme Jones commented,
Thank you very much for your thoughts. I will set up some sticky traps. I only have 3 guava trees in my yard. Only got this problem with one plant. The other 2 plants are a good 100 meters away.
over 5 years ago.

I think what causes splitting of the fruit is woodiness disease which is viral and is caused by aphids bitting and sucking the juice from the fruit. this leads to hardening of the fruit bark hence splitting, if you can control the aphids then the problem will be solved too.

Posted by: Winnie atieno onyango (1 point) Winnie atieno onyango
Posted: November 27, 2019

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