Participants should be able to understand the action threshold, when to get further help from an expert and when to consider the use of a biocontrol or chemical pesticide.
The action threshold for FAW control varies depending on the crop, stage of growth, and other factors, but it is typically determined based on the number of larvae present per plant. The action threshold is the level at which it is economically justifiable to apply control measures to prevent further damage to the crop.
The recommended action threshold for FAW control is typically between 3 to 5 larvae per plant, although this may vary depending on the crop and the stage of growth. If the number of larvae exceeds the threshold level, it is recommended to implement control measures, such as biopesticides or other methods of pest management, to prevent further damage and minimize crop losses.
It’s important to note that the action threshold is just a guideline, and farmers should also consider other factors such as weather conditions, crop health, and economic factors when deciding whether to implement control measures.
Additionally, some crops may be more tolerant to FAW damage than others, so the action threshold may need to be adjusted accordingly.
Read this expert Guidance from the USAID CIMMYT Fall Armyworm in Asia: A Guide for Integrated Pest Management. This chapter provides you with in-depth information on Scouting and Monitoring and when to take Action.
Listen to this farmer and expert talk about how they decide when to use a pesticide to control FAW. Can you think of other criteria or points to consider?