- A very destructive pest
- Can fly 100kms in a night
- Affects crop at all growth stages
- Up to 12 overlapping generations per year
- Larvae feed on leaves, stems, flowers and grain
- Feeds on more than 350 other plant types
- Maize crop damage can be 50%! Or more.
Dark gray, mottled forewings with light and dark splotches, and a noticeable white spot near the extreme end of each. About 38mm long.
Eggs are generally laid on the underside of leaves. Egg masses are grey or whitish in color with a hairy covering.
Newly hatched larvae are green in color and smooth-skinned.
Larvae can vary in color from light tan or green to nearly black as they develop. Larvae are similar in appearance to other caterpillars of related species and the head capsule markings are used to differentiate from other larvae. FAW larvae have a predominant white, inverted Y-shaped suture between the eyes and four raised spots on the second to last body segment.
Reddish-brown, 14-18 mm long. Pupation occurs within the soil.
Key Industries is working with MPI, F.A.R, and Maize Industry leaders to better understand FAW. For this purpose Key Industries are now importing Pheromone Monitoring Lures SPECIFIC to Fall Army Worm from our international partner Trécé, who are leaders in this technology.
When crops are susceptible to damage.
Edges of field or 16 to 24 rows from edge of field.
On windward side of field so pheromone will be blown into field.
Place traps at least 20 – 40m apart and 1.5m above the ground.
Minimum of 2 per field
One trap per ha >8ha
Check twice weekly.
Change lures monthly.
Change liners monthly, or when dirty.
Exerpt from Louisiana State University on FAW chemical resistance
1.4 Management of Spodoptera frugiperda Traditional chemical control strategies often provide unsatisfactory control of S. frugiperda in field corn. Almost immediately after larval hatching, neonates move into the whorl region of corn plants where they are protected from foliar insecticide sprays (Harrison, 1986; Castro, 2002; Bokonon-Ganta et al., 2003; Siebert et al., 2008a). Those insecticides which are generally effective against other pests, such as the corn earworm, Helicoverpa zea 3 (Boddie), typically provide only limited control of S. frugiperda (Young, 1979; Guillebeau and All, 1990). Regional populations of S. frugiperda have developed resistance to several classes of insecticides including carbamates, organophosphates, and pyrethroids (Adamczyk et al., 1999). Thus, transgenic corn varieties have become a more viable option for controlling S. frugiperda.