Beet carrion beetle

The beet carrion beetle (lat. Blitophaga opaca) is a member of the Coleoptera order and the Silphidae family. Unlike most of its relatives that scavenge on decaying organic matter, this species is a significant phytophagous pest that targets agricultural crops, specifically those within the Chenopodiaceae family.

The primary host plants for this pest include sugar beet, fodder beet, and table beet. In the absence of primary crops, the beetle can also feed on various weeds belonging to the Chenopodiaceae family, which allows the population to persist in agricultural landscapes throughout the entire growing season.

The biological cycle of this insect begins with the adult beetle overwintering in the soil. Upon the arrival of spring, they emerge and begin feeding on early seedlings. Females deposit their eggs near the host plants, and the emerging larvae proceed through three developmental stages before pupating in the soil.

The damage caused by these beetles is particularly devastating during the early stages of crop development. Adults create irregular holes in the leaves, while larvae often skeletonize the foliage. If the infestation occurs during the emergence phase, it can lead to the complete destruction of the seedlings, significantly reducing plant density.

Integrated pest management strategies are essential for controlling the beet carrion beetle:

• Implementing strict crop rotation to avoid planting beets in the same fields consecutively.
• Eliminating host weeds in and around the fields to reduce the beetle's food source.
• Using insecticidal seed treatments to provide protection during the critical germination phase.
• Applying foliar insecticides when the number of beetles exceeds the established economic damage threshold.
• Performing deep autumn plowing to disturb the soil and reduce the overwintering population of adults.