Sharp termite

Amitermes acutus is a species of termite belonging to the family Termitidae of the order Blattodea. These insects are specialized phytophages adapted to arid and semi-arid environments where they play a significant role in decomposing plant debris. However, in agricultural settings, they can cause serious damage to living plants.

The pest affects a wide range of crops, including cereals, sugarcane, some legumes, and various industrial crops. It becomes particularly dangerous during drought periods when natural sources of cellulose, such as dry wood or leaf litter, become scarce, forcing termite colonies to feed on the roots and stems of living plants.

The biology of this species is characterized by a complex social structure. The life cycle involves development in subterranean nests where a specific microclimate is maintained for the survival of workers and the brood. Dispersal occurs through the swarming of reproductive individuals, leading to the establishment of new colonies within the soil profile.

The damage typically manifests as the gnawing of root systems and the excavation of tunnels within stalks, leading to wilting, yellowing, and plant death. The economic impact includes reduced crop density, disrupted nutrient uptake, and significant yield losses during periods of mass infestation.

• Deep tillage of soil to destroy nests
• Use of insecticidal seed treatments
• Crop rotation with plant varieties less susceptible to termite attack
• Maintaining optimal soil moisture levels to suppress termite activity

Control measures involve an integrated approach aimed at making the environment unsuitable for colony maintenance. Chemical management is most effective during the pre-planting and planting phases, while cultural practices focus on interrupting the development cycle and disrupting the subterranean gallery systems of the insects.