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Table 1 Cumulated weekly trap counts, mean (SE), for thrips near a cabbage field in North Wiltshire, PEI, from July 22 to September 2, 2014 showing impact of location on thrips abundance throughout the season

From: Onion thrips (Thrips tabaci (Thysanoptera: Thripidae)) in cabbage on Prince Edward Island: observations on planting date and variety choice

Week+ Trap location F(df), P
North East South-edge South-outer*
1 1.0 (0.0) 5.6 (1.9) 3.0 (2.0) 7.3 (1.9) 1.5 (3,11), 0.26
2 8.0 (2.5)b 25.4 (4.8)a 15.0 (3.6)ab 19.3 (1.7)ab 4.2 (3,13), 0.03
3 24.0 (4.6)c 72.2 (14.6)b 39.0 (6.5)bc 121.0 (13.6)a 13.2 (3,13), 3.05 × 10−4
4 39.5 (11.6)b 60.3 (7.8)b 37.7 (3.7)b 140.0 (4.7)a 37.4 (3,12), 2.28 × 10−6
5 14.7 (1.2)c 53.3 (4.6)b 49.0 (7.6)b 93.5 (6.9)a 31.1 (3,12), 6.10 × 10−6
6 7.7 (1.5)b 42.0 (2.7)a 36.7 (2.0)a 38.5 (6.8)a 16.2 (3,12), 1.62 × 10−4
7 1.5 (0.6)b 6.7 (1.7)b 3.5 (1.2)b 8.3 (1.6)a 4.52 (3,12), 0.02
All weeks 14.7 (3.0)c 37.6 (5.0)b 26.3 (4.0)bc 61.1 (10.0)a 9.7 (3109), 1.03 × 10−5
  1. Letters within each week denote significant differences using Tukeys’ HSD
  2. * traps placed 3 m from edge of the field
  3. +Week 1: July 21–24, Week 2: July 25–28, Week 3: Jul 31–Aug 4, Week 4: Aug 7–11, Week 5: Aug 14–19, Week 6: Aug 21–26, Week 7: Aug 28–Sept 2