02095nam a2200181Ia 4500008004100000100001900041245009900060260006500159300001000224500002200234520148500256650002001741650001901761856000801780942000701788999001701795952010101812220216s9999    xx            000 0 und d  aJayasinghe C K 0aRubber diseases to be cautious in the next millennium and strategies in prevention and control  bBulletin of the Rubber Research Institute of Sri Lankac1999  a32-38  aSource Year: 2000  aRubber (Hevea brasiliensis) plantations in Sri Lanka suffer from more than 20 diseases and six of them, namely white root disease (caused by Rigidoporus lignosus), Oidium leaf disease (O. heveae), Colletotrichum leaf disease (C. gloeosporioides [Glomerella cingulata]), Phytophthora leaf fall, Corynespora leaf fall (CLF) caused by Corynespora cassiicola, and black stripe will continue to be important during the next millennium. As chemical control alone may not be an acceptable strategy in the future, steps have already been taken to introduce an integrated approach to pest management with special emphasis on genetic resistance. There is confidence that this approach will minimise the incidence of the common diseases with minimum cost and environmental impact. However, Corynespora leaf fall, a relatively recent disease will remain a serious threat to the natural rubber industry not only in Sri Lanka but also in other rubber growing countries in Asia and Africa. During the last three decades more than half a dozen new pathogens have been discovered in Sri Lankan rubber plantations. Although the majority of these diseases are confined to the nurseries, field epidemics may occur in the future with the introduction of new high yielding genetic material. In view of this situation, the biology, epidemiology and management of these pathogens have been investigated and a special screening programme of potential clones against most of these diseases is in operation.  aDisease control  aRubber disease  uRPP  cJS  c67570d67570  00104078aMAINbMAINc67d2021-12-17hVolume 40, Issuel0r2021-12-17 00:00:00w2022-02-16yJS