Knowra Fall armyworm Fall armyworm Fall armyworm (Spodoptera frugiperda) is a moth native to the Americas whose larvae feed on many plants, especially maize, and can cause severe crop losses.
Fall armyworm life cycle : The sequence of egg, larval, pupal, and adult stages in the development of Spodoptera frugiperda. Larvae cause most crop damage, while mobile adults disperse and lay eggs.
Fall armyworm scouting : Field inspection for fall armyworm eggs, larvae, feeding injury, and infestation levels. Early detection helps distinguish treatable infestations from old, inactive injury.
Spodoptera frugiperda : The scientific species name of the fall armyworm moth. This name identifies the species in taxonomic and agricultural research.
Maize yield loss : A reduction in harvested maize relative to the crop's attainable yield. Fall armyworm feeding can damage growing points and ears, lowering harvests.
Fall armyworm migration : The seasonal long-distance movement of fall armyworm moths across regions. Wind-assisted adult movement helps the species colonize distant agricultural areas.
Fall armyworm pheromone trap : A trap that uses synthetic female sex pheromone to capture male fall armyworm moths. Trap counts can indicate adult activity and help time field scouting.
Fall armyworm in Africa : The establishment and spread of fall armyworm across sub-Saharan Africa, first detected in 2016. Its rapid expansion there marked a major shift from its American range.
Food security : The condition in which people have reliable access to sufficient, safe, and nutritious food. Severe maize losses can threaten food supplies where households depend heavily on the crop.
Fall armyworm host plants : The plant species on which fall armyworm larvae feed and develop. Its broad host range lets populations persist beyond maize fields.
Fall armyworm economic threshold : An infestation level at which expected crop losses justify the cost of control. Thresholds help avoid unnecessary insecticide applications when damage is unlikely to repay treatment.
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