i searched the web and couldn't identify the disease that infected my citrus ! i apriectate if you could identify it and what could be done to save my citrus?

David, first please go to your profile, and post your location. When asking disease questions knowing your location is a big help. I would say it looks from your pictures to be only Sooty Mold, especially if your out of the citrus belt. Does the black coating rub off? Wet your fingers and see if you can rub the black soot off. Sooty mold is not harmful to a citrus tree. It does reduce a some photosynthesis. Spraying the tree with a horticultural oil such as UltraFine, then hosing the tree down generally takes care of it. Sooty mold is a fungus growing on the secretions of insects. If it is Sooty Mold your tree could have an aphid, mealy bug or scale infestation. - Millet

It looks like sooty mold to me-- the source of the aphid secretions can be a taller tree nearby---my sister has that problem caused by aphids from a pecan tree on adjacent property.

If so, you can just keep it washed off with soapy water.

David,

I may be wrong, but that doesn't look that much like sooty mold to me. (the middle picture doesn’t look much like a citrus, but I can’t argue that point). If the hints Millet and Skeet gave you don't result in a positive finding, I would consider some sort of physical damage; possibly caused by a chemical. Have you sprayed them with anything that could have caused damage? Have you had your house washed lately? Do new leaves have the problem or is it just on older leaves?

Ned

Here you will find a good picture of sooty mold. Some of the other info in the article is incorrect, but the picture is good and clear. With a search, you can find many good examples.

http://en.wikipedia.org/wiki/Sooty_mold

Ned, that is a good picture, but I don't believe I have seen the leaves on some of my tree with sooty mold so evenly covering the entire leaf like that. Maybe my trees don't know how to make quality sooty mold.- Millet

thanks for the replies.
i don't think its sooty mold because there is nothing over the leaf. the black spots has become the color of the leaf there is nothing you could rub off!! before this has occured i sprayed it with pesticide but some of the citrus that has been sprayed and is far from them was not infected.

Millet that one is pretty evenly covered, but you can find all kinds of examples of the web and on plants as well. Many of the dooryard citrus in the Southeast are never sprayed, and become totally covered with sooty mold. They get heavy infestations of whitefly, scale and what-have-you. What is surprising is that they continue to thive and bear good crops. Here is an example taken at a friend's home, and it is not the worse I have seen.



David, if there are no insects present and you can think of no other reason for the problem, you may need to wait a while to see if the problem persists.

Ned

David the only "insecticide" that a residential citrus tree needs to control 97 percent of the many insects that attack citrus is Horticultural Oil. When sprayed properly no foliage damage occurs. Ned, looks like you were correct. Good eye. - Millet

Hi all,
Can You write me, please, what is name of this pest in english language? Or in Latin..... Name of this in slovak or czech language is: "puklica".
I would like to find some about it on Google on other web, but I dont know its name...
Thanks

Vivat Citruses!
Kam

Kamco that is scale insect. Have a look here http://edis.ifas.ufl.edu/CH195

Laaz thanks a lot. Good link.
Kam

For Bodavid: what about a very strong attack of mites?
Wipe the underneath of a leave with a white paper handkerchief. If you have yellow or pink traces, it is mites.

thanks sylvian i'll try that i am much happier now since there is new flushes

Hi all,
Does anyone know how is it name? This pest is unknown in our region, but it is on plants in markets sometimes....

http://subtropickerostliny.zaphod3.myfreeforum.org/viewtopic.php?f=3&t=185&p=3005#p3005

Thanks
Kamco