# Rapeseed crop threats from flea beetle infestations

> Live situation record from CLSTR: https://clstr.news/situations/rapeseed-crop-threats-from-flea-beetle-infestations
> Updated: 2026-09-21T08:45:29.000Z. Sources: 4. Developments: 2.

Agricultural concerns have emerged regarding rapeseed crops due to pest infestations and irregular growth patterns. In Poland, experts from the Institute of Plant Protection - National Research Institute (IOR-PIB) warned that while adult rapeseed flea beetles damage leaves, the larval stage presents a more severe threat by burrowing into veins and stalks, potentially leading to plant death and reduced winter resilience.

Simultaneously, reports from Germany indicate a sharp escalation in flea populations, particularly in East Germany. Monitoring via the ISIP information platform shows significant pest pressure, with farmers advised to monitor damage thresholds. To mitigate risks, experts suggest using yellow bowls for monitoring and, where legally permitted, applying insecticides such as lambda-cyhalothrin.

## Timeline

### 2026-09-21: Rapeseed flea infestations threaten German crops

Rapeseed flea infestations are causing significant damage to young rapeseed crops in Germany, especially in the eastern regions, prompting urgent monitoring and pest control measures by farmers.

2 sources. https://clstr.news/cluster/rapeseed-flea-infestations-threaten-german-crops

### 2026-09-18: Rapeseed crops face threats from flea beetle larvae and irregular flowering

Agricultural experts warn that rapeseed flea beetle larvae pose a significant threat to rapeseed crops, potentially weakening plants for winter and reducing photosynthetic capacity.

2 sources. https://clstr.news/cluster/rapeseed-crops-face-threats-from-flea-beetle-larvae-and-irregular-flowering

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Cite as: Rapeseed crop threats from flea beetle infestations. CLSTR, https://clstr.news/situations/rapeseed-crop-threats-from-flea-beetle-infestations