TY  - BOOK
AU  - Shamsul Kamar A S
TI  - Distribution and severity of rubber diseases in Malaysia
PY  - 1994///
PB  - IRRDB symposium on diseases of Hevea Cochin, India, 21-22 November 1994
KW  - Clonal susceptibility
KW  - Colletotrichum
KW  - Corynespora
KW  - Disease severity
KW  - Malaysia
KW  - Oidium
KW  - Rubber diseases
KW  - Secondary leaf fall (SLF)
N2  - The Rubber Research Institute of Malaysia conducts a survey every two years to monitor disease distribution and severity. About 200 selected sites, representing different rubber growing areas, have been visited for this purpose. The clones and fields chosen were based on clonal susceptibility and locality. In the 1993 survey, Oidium Secondary Leaf Fall (SLF) was prevalent and was severe throughout the country. The other two major leaf diseases, Collectotrichum Secondary Leaf Fall (SLF) and Corynespora  Leaf Fall (LF) caused light to moderate infection. However, Corynespora LF was severe in several sites in Johore. Exotic or new diseases were not detected in the survey. Data collected from the survey are used to delineate disease epidemic areas. The severity of infection of popularly planted clones was also recorded. Changes in disease pattern and severity are discussed
ER  -