In what context are systemics used in pest management?

Systemics are a type of pesticide that are absorbed by a plant and then distributed throughout its tissues. This method of action allows the pesticide to remain within the plant, making it effective against insects that feed on any part of that plant. When insects ingest the plant sap or tissues, they also ingest the systemic pesticide, leading to their control. This internal action is advantageous because it protects the plant from pests over a more extended period and reduces the likelihood of pest resistance compared to methods that only provide immediate toxicity or contact action.

In summary, systemics are specifically designed to remain within the plant structure, targeting pests that feed on the plant and offering a more sustained means of pest management. This characteristic is what distinguishes them from other forms of pest control that may only provide immediate effects or require direct contact with the insects.