What information is legally required to be on pesticide application records?

The legally required information for pesticide application records includes several key elements to ensure compliance with regulations and to promote safe practices in pesticide usage. Among these, weather conditions are critical as they can significantly influence the effectiveness and safety of pesticide applications.

Weather conditions, such as temperature, humidity, wind speed, and precipitation, directly impact how pesticides disperse and decompose in the environment. For instance, applying pesticides during high winds can lead to drift, which may affect non-target areas or organisms and reduce the treatment's efficacy. Recording these conditions helps in evaluating the appropriateness and legality of the application, as well as ensuring that the application aligns with label requirements.

The other options, while informative in some contexts, do not meet the legal requirements set forth for pesticide application records. Product price and supplier information are not necessary for regulatory compliance. Similarly, while the end-user’s contact information might be useful for communication purposes, it is not mandated in the same way as weather conditions. Documenting application time and method is important for operational records but does not encompass the environmental factors critical for pesticide application safety as weather conditions do.