Integrated Pest Management Strategies for Potato Tuber Moth

The potato tuber moth, Phthorimaea operculella, poses a major threat to global potato production by burrowing into tubers both in the field and in storage. Integrated pest management (IPM) for this species combines cultural, biological, behavioural and chemical tactics to suppress populations below economic thresholds while minimising environmental impact. Cultural measures include strict field sanitation, timely harvesting and proper storage conditions—low temperature and reduced humidity—to inhibit larval development. Host plant resistance is exploited through the deployment of less susceptible varieties, reducing larval survival and adult fecundity. Monitoring with pheromone traps and sequential sampling guides decision making, allowing targeted interventions that avoid routine blanket insecticide applications. Biological control agents, notably larval parasitoids and entomopathogenic nematodes or fungi, have shown promise in field trials. Behavioural controls using sex-pheromone disruption or mass trapping interfere with mating and reduce oviposition. When chemical control is required, selective insecticides with novel modes of action are applied in rotation to delay resistance. By integrating these methods within a coordinated programme, growers can achieve sustainable suppression of potato tuber moth populations, safeguard tuber quality and reduce reliance on broad-spectrum insecticides.

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Integrated Pest Management Strategies for Potato Tuber Moth publication trend

The graph below shows the total number of articles in integrated pest management strategies for potato tuber moth across all publications each year (not limited to Nature Index journals).

Technical terms

Integrated pest management (IPM): A decision-support system that combines biological, cultural, physical and chemical tools to manage pest populations at acceptable levels.

Host plant resistance: The innate ability of a plant variety to reduce pest survival, development or reproduction through morphological or biochemical traits.

Pheromone trap: A device baited with synthetic insect sex pheromones to monitor adult moth activity and population dynamics.

Sequential sampling plan: A monitoring protocol that determines sample size dynamically based on interim pest density estimates to make timely control decisions.

References

1. Different Performance of Phthorimaea operculella Zeller (Lepidoptera: Gelechiidae) among Four Potato Tuber Varieties under Laboratory Condition. Insects (2021).
2. Resistance of potato genotypes to by the potato tuber moth Phthorimaea operculella (Zeller). Scientia Agricola (2001).