What basic information is required to be recorded after a pesticide application?

Recording the size of the treated area and the total amount of pesticide applied is essential for several reasons. This information helps ensure compliance with regulations and allows tracking of pesticide use over time, which is important for managing potential environmental impacts. The size of the area treated can influence the effectiveness of the pesticide, as well as help assess the risk of runoff or drift. Additionally, documenting the total amount applied assists with inventory management and ensures that applicators are following label directions regarding dosage, which is critical for safety and efficacy.

The other choices, although they may provide relevant context or support safe practices, do not represent the basic requirements mandated by law or best practices for recordkeeping after pesticide applications. For instance, while knowing applicator certification and product name can be useful for identification and compliance, it is not as directly tied to assessing the impact of the pesticide use as the area treated and quantity applied. Similarly, weather conditions could influence application efficacy, but they are not typically required to be recorded in basic post-application records. Lastly, the number of employees present does not directly relate to the application itself and is generally not a standard requirement for ascertaining the pesticide use's safety or regulatory compliance.