Fig.1. Conditional P value plot: P value for testing equality of treatment means for different values of ₀ of the counts of two-spotted spider mites for each of four different treatment levels: (i) control, no mite-control treatment; (ii) sample, PP applied at 1:4 ratio according to sampling; (iii) schedule, PP was released at a rate of 50 per square meter; (iv) Floramite [UniRoyal Chemical Company, Inc., Middlesbury, CT), pesticide application] obtained 1 wk after the application of treatments designed to control the infestation of the mites in ‘Summer-Rose Red’ ivy geranium. Each of the four treatments was applied to all the potted plants in one of four commercial greenhouses.