Triotemnus

Triotemnus is a genus of insects from the order Coleoptera, belonging to the weevil family (Curculionidae). This group of pests poses a serious threat to a number of agricultural and wild crops, as the cryptic lifestyle of both adults and larvae makes early detection and control challenging.

The main crops attacked by this pest include various cereals and legumes. The insects prefer to feed on the vegetative parts of plants, boring into stems or damaging roots, which significantly inhibits the development of the entire crop and leads to reduced yields.

The biology and life cycle of Triotemnus are typical of weevils. Females lay eggs inside plant tissues, where the larvae subsequently develop. The larval stage is characterized by active feeding on internal tissues, causing deformation and necrosis of the affected plant organs. The complete life cycle depends on climatic conditions and soil moisture.

Damage symptoms appear as puncture marks on stems, yellowing of leaves, and premature wilting of the plants. The harmfulness lies not only in direct tissue consumption but also in creating entry points for pathogenic fungi and bacteria, which often lead to secondary infections and crop failure over large areas.

Effective protection strategies include both agrotechnical and chemical methods. Important measures include:

• Implementing crop rotation to break the pest's life cycle.
• Deep autumn plowing to eliminate overwintering populations.
• Removing plant debris after harvest to reduce habitat.
• Application of systemic insecticides when the economic threshold is exceeded.