The rice caseworm is a pest that commonly affects rice crops and is mostly found in rice-growing regions worldwide. The larvae of the rice caseworm feed on the leaves of rice plants causing defoliation, yield loss and even crop failure which can lead to significant damage to the rice crops. Paddy at seedling and vegetative stages are the most preferred host of rice caseworms. It is commonly found in irrigated and rainfed wetland rice fields with poor drainage areas. The larvae can be identified by its translucent green body, orange head with filamentous gills on the side of the body. Transplanting young seedlings favors the development of rice caseworms.
Larvae feed on the chlorophyll content of the leaves leading to defoliation, stunted growth and death of the affected plant.
Scientific Name: Nymphula depunctalis
The Paddy case worm is found throughout India, but it is most prevalent in the rice-growing regions of West Bengal, Assam, and Bihar.
Rice Caseworms can be controlled by following the below mentioned cultural, Mechanical, Biological and Chemical methods.
Cultural control methods for managing Paddy case worm infestations include the following:
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