What is the pesticide formulation of lowest concentration?

The formulation with the designation "8D" represents a dilute formulation, specifically indicating that it is a 8% by weight (or volume) concentration of the active ingredient. In pesticide formulations, the number before the letter often indicates the percentage of the active ingredient in the mixture, and the letter denotes whether it is a dilute formulation. A formulation labeled with "D" typically means it is designed to be used in a diluted form, having a lower concentration of the active ingredient compared to concentrated formulations.

In contrast, the other options like "4EC," "2EC," and "Liquid concentrate" represent formulations that are either more concentrated or not characterized as dilute. For example, "4EC" and "2EC" indicate emulsifiable concentrates, where the "4" and "2" correspond to a higher percentage of the active ingredient than the "8D" formulation. "Liquid concentrate" also implies a higher concentration of active ingredients compared to a diluted version.

Understanding pesticide formulations is crucial for ensuring proper application rates and effectiveness while minimizing risks to human health and the environment. A formulation with a lower concentration is often safer for handling and application, particularly in sensitive environments.