Figure 2. Percent of M. atropurpureum leaves in each age group that yielded a positive L. sativae detection (3 successful qPCR tests), that yielded equivocal results (1 or 2 of the 3 qPCR tests were successful) or that did not yield a detection (all 3 qPCR tests failed to detect). The column on the right shows the unmined leaf mine samples from Experiment 1 (2018 and 2019 samples combined).