Entomogy storage insects

1. Submitted By- Nishant Mehla
Submitted To- Dr. Gaurav singh

2.  Scientific Name- bactrocera dorsalis
 Symptoms of damageMaggot bore into semi-ripen
fruits with decayed spots and dropping of fruits.
 Oozing of fluid
 Brownish rotten patches on fruits.

3.  Identification of pest
 Larva - Yellowish apodous maggots.
 Adult - Light brown with transparent wing

4.  Management
 Collect fallen infested fruits and dispose them by dumping in a pit
 Provide summer ploughing to expose the pupa
 Monitor the activity of flies with methyl eugenol sex lure traps.
 Bait spray - combing any one of the insecticides and molasses or jaggery 10 g/l,
 malathion 50EC 2 ml/l,
 dimethoate 30 EC 1 ml/l,
 carbaryl 50 WP 4 g/l. two rounds at 2 weeks interval before ripening of fruits.

5.  Scientific Name- Sternochetus mangiferae
 Symptoms of damage
 Grub makes zigzag tunnels in pulp
 Eats unripe tissue and bore into cotyledons
 Fruit dropping at marble stage
 oviposition injuries on marble sized fruits.
 Tunnelled cotyledons in mature fruit by grubs.


6.  Identification of pest
 Grub - A full grown grub is legless, fleshly and yellow
with dark head.
 Dark weevils after emergence remain inactive, hidden
in the cracks and crevices on the trunk
 Adult - Adult is dark brown with a short snout.

7.  Management
 Collect and destroy the fallen fruits
 Maintain hygiene in storage place
 Spray any one of the following pesticides
 Acephate 75 SP 1.5g/lit. or Lambdacyhalothrin 5 EC 2.5 ml/lit at marble size stage of
fruits, Phosalone 35 EC 2 ml/lit against Mango nut weevil

8.  Scientific Name- Cydia pomonella
 Symptoms of damage:
 Caterpillar bore into the fruits and feed on the pulp
 Infested leaves and fruits show tunnels with frass

9.  Identification of the pest:
 Larva: Pinkish-white caterpillar with black or mottled
black head
 Adult: small greyish moth, chocolate brown patches
near the tip of foreswings

10.  Management:
 Field sanitation
 Collect and destroy the infested fruits and cocoons
 Banding - corrugated cardboard bands should be applied to tree trunks
 Use sex pheromone trap
 Mass trap males with codling moth lure traps
 Release egg parasitoids, Trichogramma embryophagum at 2000/tree
 Apply Virosoft CP4 Granulovirus
 Codling moth larvae must eat the virus before they enter the fruit
 Spray DDVP 0.04%
 Apply acetempride (4 application per season) during egg laying stage

11.  Scientific name: Ephestia cautella
 Symptoms of damage
 Larva feeds on germ portion leaving the rest of the kernel
undamaged.
 In bulk infestation its damage is limited to peripheral top
layers only.
 Web formation covers the bags, floor-space and mill
machinery thereby leading to clogging in mills.

12.  Identification of the pest
 Egg: Eggs are laid in grains exposed at the sampling tube spots
in jute bags.
 Larva: Greyish white, hairy with dark brown head with 2 dark
areas on the first segment behind the head.
 Pupa: Spins silken cocoon at the time of pupation.
 Adult: Dirty white to greyish in colour with indistinct black bands