Under what circumstances are eradicants often used?

Eradicants are substances used to eliminate pests or diseases that are already present in a crop or on plants. They are typically employed when protectants—products that prevent pest infestations or diseases—are not feasible due to expense or availability. In situations where a problem has already been identified and existing protectants cannot be used, eradicants become essential for controlling the situation and preventing further damage.

This choice highlights a practical and economically driven decision in pest management. It underscores the importance of being able to react to existing pest pressures rather than only relying on preventative measures when they may not be viable. In contrast, employing eradicants in response to expected diseases, initial plant growth delays, or high water levels does not directly address their primary purpose, making those scenarios less relevant in justifying their use. Thus, the context in which eradicants are applied often aligns with addressing immediate problems rather than forecasting or managing conditions that can lead to pest or disease issues.