Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract Full Text

Fall Armyworm incursion in Nepal-what can be done with the lessons from other countries.


Fall annyworrn (FAW), Spodopterafrugiperda (J.E. Smith) (Lepidoptcra: Noctuidae) is a polyphagous, transboundary pest. It primarily prefers maize crop, however; it is not that fastidious only to a few kinds of cereal. This pest was initially noticed in North America and later reported in many countries of Africa in early 2016. In Nepal, National Plant Protection Organization (NPPO) confirmed its first occurrence in Gaidakot, Nawalparasi in August 2019 with an estimated loss of about 10-15% in maize. It has the potential to impact the food security and livelihoods of the millions of smallholder farmers if coordinated actions are not initiated. The FAMEWS, FAW monitoring tool developed by FAO is found useful for tracking its movement. Besides chemical pesticides, habitat manipulation with the deployment of deterring crops 'push' such as desmodium (Desmodium uncinatum) and pest-attracting crop 'pull' such as Napier (Pennisetum purpureum) and Sudan grass (Sorghum vidgare sudanense) is suggested in a 'push-pull strategy in the maize field. Adoption of Integrated Pest Management (1PM) with field sanitation, use of azadirachtin 1500 ppm 5 ml per liter of water, hot pepper, Artemesia, Xanthosyllum, sawdust, sand, and conserving pest natural enemies are suggested to limit the pest. Many literatures suggest the use of Spinetoram 11.7 SC 0.5 nil/liter of water, chlorantraniliprole 18.5% SC 0.4 ml/liter of water; spinosad 45%SC 0.3 ml/liter of water and cmamcctin benzoate 5% SG 0.4 Wlitcr of water arc useful to control the larvae.