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TNAU Agritech Portal :: Crop Protection

Common name: Sunflower

Scientific Name: Helianthus annus

Family: Asteraceae

1. Capitulum borer (Head borer): Helicoverpa armigera

Symptoms of damage

  • The larva feeds on the developing seeds and bore the head.
  • Fungal developed and head starts rotting.
  • The larva consumes leaf in early stage of growth and move towards the capitulum and tunnel the head.
Capitulum borer boring sunflower capitulum

 

   
Caterpillar bore into head
 
Identification of the pest
  • Eggs:  Spherical in shape and creamy white in colour, laid singly
  • Larva: Shows colour variation from greenish to brown. It has dark brown grey lines on the body with lateral white lines and also has dark and pale bands.
  • Pupa: Brown in colour, occurs in soil, leaf, pod and crop debris

Adult

  • Light pale brownish yellow stout moth.
  • Forewings are olive green to pale brown with a dark brown circular spot in the centre.
  • Hind wings are pale smoky white with a broad blackish outer margin.
Larva
Pupa
Adult

Management

  • Grow inter crops like, green gram, black gram, groundnut, soybean.
  • Sow 3- 4 lines of maize (or) jowar around the sunflower crop to monitor the moth.
  • Sow trap crops like marigold at 50 plants/acre.
  • Use of pheromone traps (4 traps/acre) for pest intensity identification as well as to trap the male moths.
  • Setting of light traps (1 light trap/5 acre) to know the range of pest incidence as well as to kill moth population.
  • Release predators like coccinellids, Chrysoperla carnea @ 1 larva/ head.
  • Release parasitoides like Trichogramma spp. @ (20,000/acre), Bracon spp., Campoletis spp.
  • Spray HaNPV 250 LE + Bt @0.5kg/ha for effective control.
  • Spray HaNPV 250 LE/ha + 1 kg Jaggery + 200ml Sandovit (or) Teepal; mixing and spray in the evening hours only.
  • Spraying of 5% Neem oil or 5% Neem Seed Kernal extract before egg laying.
  • Spray quinalphos 3m/lit of water or profenophos 2m/lit of water or chlorphyriphos 2.5m/lit of water.

2. Bihar hairy caterpillar: Spilosoma obliqua 

Symptoms of damage

  • Young larvae feed gregariously mostly on the under surface of the leaves.
  • Caterpillars feed on leaves and in severe infestation the whole crop is defoliated.
  • Drying up of infected leaves is the main symptom

Identification of the pest

  • Eggs: Laid in cluster on the underside of leaves.
  • Larva: Covered with long yellowish to black hairs

Adult

  • Medium sized brown moth with a red abdomen.
  • Wings pinkish with numerous black spots.

Management

  • Deep summer ploughing.
  • Use of well rotten manures.
  • Intercropping with pigeon pea at a row ratio of 2:1 is effective in reducing the insect attack.
  • Collection and destruction of larvae.
  • Spray phosalone 35 EC at 1000ml/ha.
Biharhairy caterpillar early instar larvae

 

Larval feeding
 

3. Tobacco caterpillar : Spodoptera litura

Symptoms of damage

  • The larvae feed on the tender leaves, shoots, bracts and petals.
  • Later, the larvae spread in the field causing defoliation.
  • The larvae also feeds on the developing seeds in capitulum.

Identification of the pest

  • Egg: Egg masses appear golden brown.
  • Larva: Pale greenish with dark markings. Gregarious in the early stages

Adult

  • Forewings: Brown colour with wavy white marking
  • Hind wings: White colour with a brown patch along the margin

Management

  • Hand pick the Helicoverpa larvae and destroy.

Spray any of the following insecticides :

  • Dichlorvos 76EC 500 ml/ha
  • Phosalone 35 EC 1000 ml/ha

Dust any one of the following :

  • Phosalone 4 D 25 kg/ha
  • Insecticidal application at the time of bee visit is toxic to honey bees. So, apply the insecticides after 4 pm when the bee activity is minimum.
  • Do not spray insecticides on the same day when NAA is sprayed
14-1
 

4. Leaf hopper (jassids): Amrasca biguttula biguttula

Symptoms of damage

  • The adult and nymphs suck the plant sap.
  • The infected leaves show pale yellow colouration.
  • In case of heavy infestation the leaves turn inwards.
  • The leaf edges may turn light pinkish brown.

Identification of the pest

  • Nymphs - Pale greenish almost translucent and walk diagonally.
  • Adults - Greenish yellow, wedge shaped with a pair of black spots on vertex and a black spot on each of the forewings

Management

  • Treat seed with imidacloprid 70 WS at 7 g/kg protected the sunflower plants from leaf hopper upto 7 weeks.
  • Spray Imidacloprid 70% WS 490 ml/ha
  • Imidacloprid 17.8%SL 100 ml/ha

5. Parakeet: Psittacula krameri

Symptoms of damage

  • The birds damage starts from the milky stage and continues till harvest.
  • These consumes on an average of 152 seeds/day.

Identification of the pest

  • It is slim, green parakeet with the typical short, heavy, deeply hooked, red bill. Hollow space in a tree trunk is the nest of the bid

Management

  • Establishment of scare crows in the field so as to distract the birds.
  • Bursting of crackers and carbide guns, tying polythene bags.
  • Use of bird scaring tape (reflective ribbon or bird scaring ribbon).
  • Using bio-acoustic method like pre-recorded distress calls to distract the birds.
  • Destruction of bird nest in and around the field.
  • Deploy two labourers per hectare to scare away the birds.
  • Pruning of perching and breeding places
  • Spraying of neem kernal powder solution at 10 g/litre of water after seed shedding repels the birds.
  • Use of bird proof nets.

 

Parakeet damage in sunflower

Updated on Feb, 2023

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