Sulfur is often used to treat powdery mildew.

So then sulphur is a fungicide, too?

Yes. If you have not yet tried, google is a great resource that can give you more in depth answers much more quickly than a forum can. If googling does not work, someone on the forums will probably know the answer or google it themselves.

Carbos, welcome to the forum. What symptoms is your tree showing?

Adiel

No specific symptoms. Just curious and trying to become more knowledgeable.

Carbos, no problem. On Mangos, you can use Copper for control of Anthracnose. The Sulfur is for control of Powdery Mildew.

There are some varieties of Mangos that are more disease-resistant than others.

Adiel

I'm not 100% sure, but if i can recall correctly, sulphur is adsorbed till a lethal level from Oidium, because it lacks of a way to control the sulphur adsorbion (since usually suplphur is uncommon on leaves). Copper, instead, does some methabolic damage avoiding the formation of the acetyl-ceoenzyme A.

Carbos, when I mentioned sulfur and copper, I did not mean in their pure form. I meant in the proper mixture which will not cause any damage to your mango tree.

This would be an example of sulfur ready to mix with water:

http://www.fertilome.com/product.aspx?pid=84d72980-10d2-4a06-a891-738b0f54455e

This would be an example of copper ready to mix with water:

http://www.southernag.com/docs/labels_msds/copper-liq-09.pdf

Both products are mixed with water and applied as a foliar spray (applied to the leaves and flowering panicles).

Adiel

Adiel, appreciate the information. Thank you.