Effective Management Of Fall Armyworm (Spodoptera frugiperda) On Maize
Fall armyworm Spodoptera frugiperda is a most invasive pest native to America, it has invaded India and now causing huge economic damage in maize. The incidence of this pest was first observed in India since May 2018. Later Fall armyworm infestation was reported in Andhra Pradesh, Tamil Nadu, Telangana, Maharashtra, Madhya Pradesh, Odisha, Bihar, West Bengal, Gujarat, Chhattisgarh and Kerala.
Fall army worm is a destructive pest of Maize and Sorghum. If both are not available then it will attack other crops belonging to Poaceae, the family of grasses, such as sugarcane, rice, wheat, ragi, fodder grasses etc.
Cool, wet, spring weather usually favours armyworm development. The full-grown 1.5 -2 inch armyworm has a greenish brown body with a thin stripe down the center and two orange stripes along each side. The head is brown with dark honeycombed markings. Eggs are small, greenish-white, globular, and laid in clusters of 25 or more on the leaves of grasses.
Symptoms of Damage of the fall armyworm on Maize
- Armyworms usually feed at night and damage corn by chewing leaves.
- Feeding is usually confined to leaf margins, but occasionally they may strip the entire plant leaving only the midrib of the leaves.
- During the day, armyworms are found in the soil or underneath ground cover.
- Ragged leaf feeding/ untidiness of the leaves in the spring and early summer is evidence of armyworm feeding.
Management Of The Fall Army Worm On Maize:
- Seed treatment with Fortenza Duo 4ml/Kg of seeds have effect on fall army worm and stem borer as well.
- Spray with Ampligo 4 – 0.5 mL/L OR Delegate 0.9 mL OR Coragen 0.33 mL/L + Econeem plus 1 % - 1 ml/L
- Poison Baiting to kill Fall army worm or cutworm on Maize:
The army worm will be dwelling in the soil and will be coming out to feed on the leaves during night time. To control fall army worm feeding, baiting technique may be an effective method to kill them. As the bait contains jaggery, the larvae gets attracted to jaggery (works as attractant), feed on the bait mixture and will be killed avoiding them to feed on the crop.
The process of baiting can be a mixture of 3 components,
1.Poison (Insecticide)
2. Carrier or base (Rice bran), and
3.Attractant (Jaggery) at following ratio.
Poison(Insecticide) + rice bran 50 kg + jaggery 5 kg and water 10 lit /acre. The mixture is made into balls and kept all along the bunds of the plot.
The poison may be a stomach poison such as Monocrotophos or Chloropyriphos containing chemicals and for biological control the Bacillus thurengiensis Bt. Delfin can be used.
|
Product(Insecticide) |
Chemical Content |
|
Monocrotophos 36% SL |
|
|
Monocrotophos 36% SL |
|
|
Chlorpyriphos 50% + Cypermethrin 5% EC |
|
|
Chloropyriphos 50 % EC |
Note:
- Jaggery need to be dissolved in the water first and then add that jaggery dissolved water to mix with Poison and Rice bran before application and baiting should be preferably done in the evenings.
- Application type/timing: Application to the field only after seeing pests or when pest is repeatedly attacking the crops.
ALSO READ : FERTIGATION (FERTILISERS APPLICATION THROUGH DRIP] SCHEDULE FOR MUSKMLEON CROP
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Created by:
Navyashree M S,
Associate Agronomist
BigHaat
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For more information kindly call on 8050797979 or give missed call on 180030002434 during office hours 10 AM to 5 PM
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Disclaimer: The performance of the product (s) is subject to usage as per manufacturer guidelines. Read enclosed leaflet of the product(s) carefully before use. The use of this product(s)/ information is at the discretion of user.
Mize prte
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