Wheat blossom midge

The wheat blossom midge (Contarinia tritici) is a significant pest belonging to the Cecidomyiidae family within the Diptera order. It is recognized as a major threat to cereal production worldwide, particularly affecting wheat crops during the critical flowering stage.

This pest mainly targets wheat, but can also infest rye and occasionally barley. Damage is caused by the larvae feeding on the developing grain, which leads to stunted kernels, reduced grain weight, and significant loss of yield potential if not managed correctly.

The life cycle consists of a single generation per year. Larvae overwinter in the soil within silk cocoons. As temperatures rise in spring, pupation occurs, followed by the emergence of adults, which typically synchronizes with the head emergence and flowering phases of the host plant.

The larvae are small, orange-red, and feed inside the florets. The economic damage is characterized by shriveled or empty grains, which can compromise both the quantity and the quality of the harvested grain, impacting overall market value for the grower.

• Crop rotation to break the pest's life cycle.
• Deep tillage in autumn or early spring to bury larvae.
• Selection of wheat varieties with tight glumes.
• Application of targeted insecticides during the peak emergence period.
• Encouraging natural predators and parasitoids in the field ecosystem.