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11
Jul

Egg of Rice stem borer ( Tana bedhak )

1. Eggs are creamy white, flattened, oval and scale like and laid in mass. Each egg mass consists of 15-80 eggs and covered with buff coloured hairs. 2. Before hatching, the eggs darken to a purplish tinge. They are laid mostly near the tip of the leaves.
11
Jul

Biology of Rice stem borer ( Tana bedhak )

1. Egg 2. Larva 3. Pupa 4. Adult
11
Jul

Nature of damage of Rice stem borer ( Tana bedhak )

1. The insect may start attacking the plants in the nursery especially long duration varieties. 2. The incidence is mild in the season June to September, but later on gets intensified from October to January and February. 3. The caterpillar enters the stem and feeds on the growing shoot. As a result the central shoot dries up and produces the characteris
11
Jul

Symptoms of attack of Rice stem borer ( Tana bedhak )

 

A number of stem borer moths seen dead and floating on the water in the fields. In the vegetative stage, dead hearts seen in the affected tillers and in the reproductive stage, whiteear may be seen.
11
Jul

Rice stem borer ( Tana bedhak )

Latin name: Scirpophaga incertulas, Pyraustidae, Lepidoptera Common name: Tana bedhak Species: S. incertulas
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