Yerson Duban Suarez Cordoba

Universidad de la Amazonia · Caqueta

South American Leaf Blight (SALB), caused by Pseudocercospora ulei, is the most important disease in Hevea brasiliensis grown in South America. This study aimed to evaluate long-term resistance in the field for 11 years in 10 rubber tree genotypes (nine hybrid clones and one primary clone) in a large-scale clonal trial (LSCT) and under controlled a...

In Latin America, there are areas that favor the cultivation of rubber (Hevea brasiliensis) and reduce the risk of South American Leaf Blight (SALB), produced by the pathogen Pseudocercospora ulei. This study aimed to analyze the growth, early yielding and SALB resistance of nine promising clones and IAN 873 (control) in the pre-tapping and early t...

A standard area diagrams set (SADs) was developed and validated to assess the severity of black crust (Phyllachora huberi) on rubber tree leaflets (Hevea brasiliensis). The proposed SADs include images of leaflets with six distinct disease severities (1, 3, 5, 12, 27 and 60%). The SADs was evaluated by 16 raters divided into two groups based on the...

In Latin America, natural rubber production is limited by an endemic disease known as South American Leaf Blight (SALB), caused by a leaf plant pathogen fungus, Microcyclus ulei, recently renamed Pseudocercospora ulei. The main strategies for managing the disease are using genotypes with SALB resistance and identifying escape zones. The objetive of...

Rubber trees (Hevea brasiliensis) in Latin America are strongly affected by a disease known as South American Leaf Blight (SALB), which is caused by the foliar fungus Microcyclus ulei, renamed Pseudocercospora ulei. This study analyzed the temporal dynamics (eight years) of growth and resistance to SALB in nine promising American clones and the IAN...