Figure 3. Seasonal mean (± SEM) percentage parasitism of Lygus spp. nymphs collected from crop and non-crop hosts for each sample date in 2002 and 2003. Percentage parasitism was determined by dissection of the nymphs. Mean parasitism rate did not differ among host plants in 2002 (F = 20.4, df = 6, P = 0.1158) or 2003 (F = 2.26, df – 5, P = 0.0808), nor between crop and non-crop hosts in either year (2002, P = 0.0414); 2003, P = 0.1861. Percentage parasitism for PREC alfalfa represents non-replicated data included for reference.