The quantification of physiological processes such as photosynthesis, stomatal function (transpiration), plant growth analysis (PGA), tissue necrosis, and subtle to dramatic effects to crop harvest are presented in a comprehensive evaluation. A crop's occasional and unexpected negative response to a chemical is of as much importance as the efficacy of the chemical against the target pest. Pacific Ag's scientists recognize the potential impact of phytotoxicity and monitor for its signs in every study. If observed, we work to identify the underlying cause (rate, surfactant, environmental conditions, etc).