insect-pest of sesame

damages and control

1. welcome Insect-Pest Of Sesame Saturday, November 19, 2016 1 (k.Harsh)

2. enlisting Sr.No . Common Name Scientific Name Family Order 1 . Til Leaf & Pod Antigastra catalaunalis Duponchel Lepidoptera Caterpillar 2. Til Hawk-Moth Acherontia styx Sphingidae Lepidoptera 3. Sesame Gall-fly Asphondylia sesami Cecidomyiidae Diptera Saturday, November 19, 2016 2 (k.Harsh)

3. 1. Til Leaf & Pod Caterpillar Distribution: Distributed throughout India & also has been reported from Europe, Africa, Indonesia, & South-East Africa. Host: Sesame Appearance: They are pale yellow, when young, but gradually become green and develop black dots all over the body. The full grown larva measures 14-17mm. The moth is a small insect with a wing span of about 2 cm having dark brown markings on the wing-tips. Saturday, November 19, 2016 3 (k.Harsh)

4. Life-cycle: North India ( Aug.) Moth(female) eggs (140) 2-7 days larva 10-33days full grown larva on plant eggs (14)adult pupa a. 3-5 days after 4-20 days emergence b. life cycle completed in 3 weeks. Eggs(140): laid singly, on tender portion of plant in night, shiny pale green colour. Larva: 2mm in length, feeds on leaf epidermis O.W stage: Larva during Jan-Feb inside pods & stubble. Saturday, November 19, 2016 4 (k.Harsh)

5. Fig. : Different stages of Til leaf & pod caterpillar Saturday, November 19, 2016 5 (k.Harsh)

6. Damage: The caterpillars damage apical shoots and young leaves. They feed on leaves. They also bore into shoots, flowers, buds, & pods. An early attack kills the whole plant, but infestation of the shoots at later stage hampers further growth & flowering. One larva can destroy 2-3 young plants. Max. Infestation occur in May & again in Sept.-Oct. Management: clean cultivation Spray the crop twice with 250ml of fenvalerate 20EC, or 375 ml of deltamethrin2.8EC, at pest appearance in 250lt. of water/ha . Saturday, November 19, 2016 6 (k.Harsh)

7. 2. Til Hawk-moth: Distribution : Common in India & is also distributed in Indonesia, Srilanka & Myanmar. Host : sesamum , potato, brinjal , lablab & ornamental plants such as balsam. Appearance : The adult is large reddish brown, robust thick-set moth with a wing span of about 10cm. The forewings are decorated with a mixture of dark brown & grey patterns with dark or black wavy markings & a prominent yellow spot on each wing. There is prominent deaths head mark on the thorax. The moths are swift fliers & often make hawk like darts to a source of light at dusk. The full grown caterpillar is 5cm in length & 1 cm in width. The horn like projections on the hind end of the abdomen are conspicuous. The body of larva is plump & is decorated with a pleasant mixture of soft colours . Saturday, November 19, 2016 7 (k.Harsh)

8. Saturday, November 19, 2016 8 (k.Harsh)

9. Life –cycle: Fig.: Life-cycle of Til Hawk-moth Saturday, November 19, 2016 9 (k.Harsh)

10. Damage: The larva feed voraciously on leaves & defoliate the plants. Management: Hand-pick the larvae in the initial stages of attack & destroy by keeping in kerosen oil. Plough the field during winter to expose the hibernating larvae. Saturday, November 19, 2016 10 (k.Harsh)

11. 3 . Sesame Gall-fly Distribution: Throughout India. Host: Sesamum Appearance: The adult is mosquito-like and small. Eurytoma dentipectus parasitize the maggots (larva) of the gall-midge. Saturday, November 19, 2016 11 (k.Harsh)

12. Fig. : Sesamum gall-fly Saturday, November 19, 2016 12 (k.Harsh)

13. Life-cycle: Fig.: Life-cycle of sesame gall-midge Saturday, November 19, 2016 13 (k.Harsh)

14. Damage: As a result of feeding by maggots, the buds develop into galls & produce no fruits & seeds. Management: Clip the galls & pick & burn the shed leaves. Spray 2.5kg ok carbaryl 50WP in 625 lts . of water/ha . Saturday, November 19, 2016 14 (k.Harsh)

15. Thank you!!!! Saturday, November 19, 2016 15 (k.Harsh)