DiscussionBased on laboratory testing of accuracy and sensitivity,cost-benefit analysis, and survey responses from growerson ease of use, we find the two lateral immunoassay kitswere best for wide usage in commercial apple orchards forfire blight diagnosis. These immunoassay kits, AgriStripand Pocket Diagnostics, were simple to use in the orchardsand needed the least technical expertise. The AgriStripshowed high specificity for E. amylovora in this study,but Pocket Diagnostics showed positive tests forE. pyrifolia as well (Table 2).