Figure 4

Selenium added to spider mite-populated A. bisulcatus plants reduced spider mite population growth. A: Percent population change of established spider mite populations on A. bisulcatus over the course of a 3-week high-Se or low-Se treatment. B: Selenium concentration of plants at the beginning and end of the experiment. Values show means +/- SE. An asterisk between data points (A) or bars (B) represents a significant difference between the high- and low-Se treatments (t-test, α = 0.05, n = 10 for non-choice experiments, n = 7 for choice experiments).