New reports of pests and diseases in rambutan (Nephelium lappaceum L.) from Kerala, India
Rambutan (Nephelium lappaceum L.) is a crop of the warm humid tropics that can grow in a wide range of soils NDASH from low land-heavy soil to upland-hilly soil. In India, particularly in the state of Kerala, rambutan is mostly confined to two districts, namely Pathanamthitta and Kottayam. Here, rambutan became one of the most treasured fruits, particularly as a courtyard crop or on its fringes in the home garden. Although there are no reports of severe pest and disease attacks in rambutan, several pests are being monitored, which may point to a significant threat in the near future. Two new pests of economic importance (fruit borer: Conogethes punctiferalis and fruit webber: Eublemma anguilifera) have been identified from the rambutan growing tracts of Kerala during last year (2015) from fruit set to fruit ripening stage. Their nature of damage and symptoms of infestation have been clearly studied and being reported for the first time in rambutan. Other pests like mealy bug (Planococcus citri) from fruit set to fruit ripening stage, fruit fly (Bactrocera dorsalis) at fruit ripening stage, and leaf folder (Thalassodes quadraria) damage on young foliages have also been observed. The major disease observed was fruit rot caused by Colletotrichum gloeosporioides. Hence, there is an urgent need to standardize the management strategies for controlling pests and diseases of this newly emerging crop as they have invaded the major rambutan growing tracts of Kerala.
Muhamed, S., Kumari, U. and Kurien, S. (2018). New reports of pests and diseases in rambutan (Nephelium lappaceum L.) from Kerala, India. Acta Hortic. 1211, 175-180
Sapindaceae, South India, fruit splitting, fruit rot, fruit borer, fruit webber