I have several Leelawadee (also called Frangipani) with an orange powdery fungus commonly called rust. Any suggestions as to how to get rid of rust on Leewadee or controlm it? I have been using a spray called S85 with little success. I have read on Australian sites about a fungicide called Bayleton (triadimefon) that is said to be very effective in granular form. Does anyone know if and where it is available in Thailand, preferrably the Pattaya area. How about Eagle 20; same question.

Has anyone had success in getting rid of or controlling rust on Leewadee? If so, please tell me how. Hopefully, the remedies will not be too time consuming or expensive, and the chemicals readily available here in Thailand.

Thanks in advance for any suggestions.

Frangipani rust

There is a new disease attacking frangipanis in Australia called frangipani or plumeria rust (Coleosporium domingense syn C. plumeriae). It is most noticeable in late summer and early autumn. Small yellow pustules appear on the underside of leaves. They rupture and spread spores which pass the disease to other plants nearby. The upper sides of the leaves are brown and discoloured. Severe infections may cause the leaves to drop prematurely.

To control frangipani rust try using a fungicide (such as Mancozeb) in the warmer months to slow the development of the disease. Disposing of all fallen leaves in winter and spraying the tree and the area under the tree with a fungicide may slow the reappearance of frangipani rust next season.

http://www.burkesbackyard.com.au/2003/arch...ubs/frangipanis

Mancozeb is widely available at the local agro shops.

MC

do you use the same thing for ugly black stuff on mango trees?

Plumeria rust.

More info: http://plumeria101.com/problems.html

do you use the same thing for ugly black stuff on mango trees?

Yes, it's widely used for that also.

#Mango tree problems:

Withered blackened young growth indicates the presence of tip borers. Spray with a systemic insecticide e.g. Rogor (full protection when spraying) and be sure to coat both sides of the leaves.

Anthracnose fungus causes black spotting on the leaves, flowers and fruit. Spray regularly (flowering to harvest) with Mancozeb.

Root fungus or collar rot may be terminal but try a systemic fungicide e.g. Phosacid. Coat both sides of leaves. Do not water mango trees in the 3 months or so prior to flowering. #

MC