Control of caseworm (Nymphula depunctatis)
in rice by leaves of parasi and Sali

Caseworms are very common in the area of Khaspokharia village West Singhbhum district, Jharkhand. Fresh leaves of parasi (Cleistanthus collinus) and sali (Boswellia serrata) are spread on the insect-infested field @ 5 kg leaves per 100 m2 . A majority of insects (70-80%) are controlled with this practice.

Results and discussion

Results obtained from the experiment conducted on 15 farmers’ fields during 2003-04 and 2004- 05 cropping seasons. At 30 DAT minimum mean caseworm infestation (30.9%) was recorded in application of chlorpyriphos @ 1.0 litre/ha compared with 81.3% in control during two cropping seasons (2003-04 and 2004-05), followed by application of parasi leaves @ 100 kg/ha, which recorded 58.1% caseworm infestation. At 60 DAT recorded minimum mean caseworm infestation (9.4%). All the treatments were significantly superior to control. Use of parasi leaves was effective in reducing caseworm population.


The study revealed that spreading of parasi leaves once 5-10 days after transplanting @ 100 kg/ha helped in reducing both the rice caseworm infestation and larvae population. Application of parasi leaves showed significantly lower infestation of caseworm than control.

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