Colombian Researchers Discover Aggressive New Variants of Coffee Leaf RustDaily Coffee News by Roast Magazine

Coffee leaf rust causes brown spots on coffee leaves and typically reduces or eliminates coffee cherry yield. The image “coffee leaf rust defoliation” by Michael C. Wright is licensed under CC BY-SA 4.0.

Colombian coffee leaders are urging growers to turn to disease-resistant coffee varieties upon the discovery of new, more aggressive variants of the coffee leaf rust (CLR) fungus.

The troubling findings come from Cenicafé, the Colombian national coffee research institution of the Colombian Coffee Growers Federation (FNC). The group says it has identified six new races (a.k.a. subspecies) of leaf rust in the country, plus nine

Read more