Larvae of this pest generally have a tendency of growing in open clusters and are usually known as “army worm”. The young larvae are dependent on the leaves for their food and hence they eat leaves. On the other hand, the old larvae cut off the panicles mostly at the base and that is why there name is rice ear caterpillar. These larvae don’t like sunlight; they are shy of it, so they usually feed at night.
To control Rice-ear-cutting-caterpillar, spray 400ml Ekalux 25EC or 560 ml monocrotophos per acre in 100 liters of water.