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Evolution and InnovationSave Biodiversity...Rise

Brinjal

BRINJAL PESTS :

Crop: Brinjal
Scientific name: Solanum melongena
Family: Solanaceae
Shoot and fruit borer: Leucinodes orbonalis

Symptoms of damage:

  • Withering of terminal shoots/dead hearts
  • Bore holes on shoots and fruits plugged with excreta
  • Shedding of flower buds
  • Withering and drying of leaves
Withering Bore hole

Identification of pest:

  • Eggs:  Creamy white eggs
  • Larva:  Pink in colour
  • Pupa: Greyish boat shaped cocoon
  • Adult: Medium sized moth. Forewings has black and brown patches and dots on white colour, hind wings are opalescent with black dots
Larva Pupa Adult
Management:
  • Remove the affected terminal shoot showing boreholes.
  • Remove the affected fruits and destroy.
  • Avoid continuous cropping of brinjal crop
  • Grow the varieties with long and narrow fruits in endemic areas
  • Install pheromone trap@12/ha
  • Encourage the activity of larval parasitoids: Pristomerus testaceus, Cremastus flavoorbitalis
  • Avoid use of synthetic pyrethroids
  • Avoid using insecticides at the time of fruit maturation and harvest
  • Neem seed kernel extract (NSKE) 5 % or
  • Spray any one of the following chemicals starting from one month after planting at 15 days interval
Insecticide Dose
Azadirachtin 1.0% EC (10000 ppm) 3.0  ml/lit.
Azadirachtin 0.03 % WSP (300 ppm) 5.0  g/lit.
Chlorpyrifos 20 % EC 1.0  ml/lit.
Dimethoate 30 % EC 7.0  ml/10 lit.
Emamectin benzoate 5 % SG 4 g/10 lit.
Flubendiamide 20 WDG 7.5 g/10 lit.
Phosalone 35 % EC 1.5  ml/lit.
Quinalphos 25 % EC 1.5 ml/lit.
Thiodicarb 75 % WP 2.0 g/lit.
Thiometon 25 % EC 1.0 ml/lit.
Trichlorofon 50 % EC 1.0 ml/lit.
Triazophos 40 % EC 2.5 ml/lit.
Stem borer: Euzophera perticella
Symptoms of damage:
  • Top shoots of young plants droop and wither.
  • Older plants become stunted.
  • Fruit bearing is affected
Identification of pest:
  • Egg: Cream, scale-like
  • Larva: Fully grown larva is creamy white
  • Adult: Greyish brown, forewings has transverse line and hind wings are white in colour
Management:
  • Collect and destroy the damaged and dead plants
  • Light trap @1/ha to attract and kill adults
  • Spray neem oil 2ml/lit  
  • Avoid using synthetic pyrethriods causing resurgence
Bud worm: Scrobipalpa blapsigona

Symptoms of damage:

  • Shriveling and shedding of flower buds

Identification of pest:

  • Larvae - pale whitish  with pink tinge
  • Adult - small with fringed wings.

Management:

  • Spray neem oil 2ml/lit
Adult
Hadda / spotted beetle: H.vigintioito punctata

Symptoms of damage:

  • Scrapping of chlorophyll
  • Skeletonization and drying of leaves

Identification of pest:

  • Eggs: Cigar shaped, yellow in colour
  • Grub:  Yellowish bearing six rows of longitudinal spines.
  • Pupa: Yellowish with spines on posterior part and anterior portion being devoid of spines.
  • Adult:  14 spots on each elytra, deep red

Management:

  • Collect damaged leaves with grubs and egg masses and destroy them
  • Shake plants to dislodge grubs, pupae and adults and destroy
  • Conserve natural enemies in brinjal ecosystem
  • Spray Carbaryl 50 WP @ 3g/lit

 

Skeletonized - Grub Damage
Adult
Ash weevils: Myllocerus subfasciatus, M. discolor, M. viridanus

Symptoms of damage:

  • Notching of leaf margins
  • Grubs feed on roots causing wilting of plants

Identification of pest:

  • Larva Grub: Small and apodous
  • Pupa: Pupates in soil in earthen cocoons
  • Adult:
  • M. maculosus: Greenish white with dark lines on elytra
  • M. subfasciatus: Brown
  • M. discolor: Brown and white spots
  • M. viridanus: Small light green weevil

Management:

  • Collect and destroy adults
  • Apply Neem cake @ 500 kg/ha at the time of last ploughing
  • In endemic areas, apply carbofuran 3 G @15 kg/ha on 15 days after planting
  • Spray carbaryl 50 WP @3g + wettable sulphur 2g/litre
V - shape notching
Adult

Brown leaf hopper: Cestius phycitis

Symptoms of damage:

  • Reduction in size of leaves
  • Shortened petioles
  • Excessive growth of branches general stunting of plants
  • Conversion of floral parts into leafy structures
  • Plants become bushy
  • Fruiting is rare
  • Vector of little leaf of brinjal

Identification of pest:

  • Adult: Small light brown leaf hopper

Management:

  • Remove infected plants and destroy them
  • Before transplantation dip the seedlings in 0.2% carbofuran 50 STD solution (control insect vectors)
  • Spray with methyl parathion 0.5% or dimethoate 0.3%

Lace wing bug: Urentius hystricellus

Symptoms of damage:

  • Yellowing of leaves
  • Affected leaves covered with exuviae and excreta

Identification of pest:

  • Egg: White nibble shaped eggs
  • Nymph: yellowish white with prominent spines
  • Adult:
    • Dorsal side -straw coloured
    • Ventral side -black coloured
    • Pronotum and forewings reticulated

Management:

  • Spray dimethoate 30 EC @ 1 lit/ha or methyl demeton 25 EC @ 1 lit/ha
Affected leaves covered withexcreta Yellowing


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