Early shoot borer: Chilo infuscatellus (Crambidae: Lepidoptera) || KHETI KA HISAB ||

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 ENTO 331 :: Lecture 12 :: Pest of Sugarcane

Early shoot borer: Chilo infuscatellus (Crambidae: Lepidoptera)


Distribution and status: India, Pakistan, Indonesia, Thailand, the Philippines, Korea, Afghanistan, and Burma.

Host range: Pearl millet, oat, barley and maize
Damage symptoms

Dead heart in 1-3 month old crop, which is readily plucked out, emanates an unpleasant odour from the decaying component of the straw-colored dead-heart. At the base of the shoot, just above the surface of the ground, are several bore holes. In the early stages of the crop, it is a significant pest.

ETL: 15 % deadheart
Bionomics
            Dark brown head and five dark violet longitudinal stripes on a filthy white larva. Adult: A light grayish-brown moth with black spots at the forewing costae and white hind wings.

Management

1.     Use management techniques if there is an excess ETL of 15% dead hearts in the population.’

2.     Plant CO 312, CO 421, CO 661, CO 917, and CO 853 as resistant cultivars.

3.     Planting in December – January escapes the incidence

4.     When you plant in December or January, the incidence is reduced.

5.     Junk mulching: 10 to 15 cm thick on the third day following planting

6.     Day thirty of earthing up

7.     Assure sufficient moisture

8.     Take out and burn dead hearts.

9.     Before the cane setts are covered, apply carbofuran 3G @ 33 kg or fipronil 0.3 G 25.0-33.0 kg / ha to the soil.

10.            45 days after planting, apply cartap hydrochloride 4G or fipronil 0.3 G at 25 kg per ha by combining 50 kg of soil and sprinkling along the rows before earthing up.

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