What does an eradicant do when used as a systemic?

What does an eradicant do when used as a systemic?

• A. Provides protection before infection
• B. Controls fungi that have already entered the plant
• C. Kills surface inoculum only
• D. Inhibits spore germination on leaves

Answer: (B)

An eradicant used systemically is taken up by the plant and moves through its tissues to reach fungi that have already invaded or established inside the plant. It acts at internal sites of infection, helping to stop the pathogen after it has entered, rather than simply protecting against infection or acting only on surface material. This is why it best fits the description of controlling fungi that have already entered the plant. It’s not about providing pre-infection protection, nor is it limited to killing surface inoculum or inhibiting spore germination on leaves, which are actions associated with preventive or surface-targeted treatments.

An eradicant used systemically is taken up by the plant and moves through its tissues to reach fungi that have already invaded or established inside the plant. It acts at internal sites of infection, helping to stop the pathogen after it has entered, rather than simply protecting against infection or acting only on surface material. This is why it best fits the description of controlling fungi that have already entered the plant. It’s not about providing pre-infection protection, nor is it limited to killing surface inoculum or inhibiting spore germination on leaves, which are actions associated with preventive or surface-targeted treatments.