Table 1.
Comparative seasonal catches of sterile and wild codling moths in white delta traps baited with acetic acid (AA) or ethyl-(E,Z)-2,4-decadienoate (pear ester (PE)) alone and in combination (AA-PE) in an apple orchard receiving weekly delivery of sterile moths.
| Moth Sex | Lure Type 1 | Mean (±SE) Cumulative Number of Moths Caught/Trap 2,3 | ||
|---|---|---|---|---|
| Sterile | Wild | Total | ||
| Male | AA-PE | 151.5 ± 42.0 a | 11.3 ± 4.1 a | 162.8 ± 26.5 a |
| AA | 51.3 ± 54.0 b | 0.8 ± 0.7 c | 52.0 ± 31.6 b | |
| PE | 35.3 ± 25.3 b | 6.8 ± 7.1 b | 42.0 ± 18.0 b | |
| Blank | 0.8 ± 1.3 c | 0.0 ± 0.0 | 0.8 ± 1.3 c | |
| Female | AA-PE | 77.0 ± 23.4 a | 12.8 ± 2.9 a | 89.8 ± 13.2 a |
| AA | 17.8 ± 13.1 b | 1.3 ± 1.1 b | 19.0 ± 17.1 b | |
| PE | 18.5 ± 16.1 b | 9.3 ± 6.4 b | 27.8 ± 12.9 b | |
| Blank | 0.6 ± 1.2 c | 0.0 ± 0.0 | 0.6 ± 1.2 c | |
| Totals | AA-PE | 228.5 ± 114.3 a | 24.0 ± 1.3 a | 252.5 ± 37.8 a |
| AA | 69.1 ± 33.0 b | 2.0 ± 0.7 b | 71.0 ± 30.7 b | |
| PE | 53.8 ± 20.5 b | 16.0 ± 7.7 a | 69.8 ± 30.3 b | |
| Blank | 1.4 ± 1.2 c | 0.0 ± 0.0 | 1.4 ± 1.2 c | |
1 AA lure is a 15 mL propylene bottle containing 10 mL of glacial acetic acid released through a 3 mm hole in the lid; PE lure is a grey rubber septum loaded with 1 mg of ethyl-(E,Z)-2,4-decadienoate and 10 mg of butylated hydroxytoluene (BHT) antioxidant; AA-PE lure is a combination of the two lures. 2 Means (n = 4 traps) within a column for a given moth sex or total sterile and wild moths, followed by different letters are significantly different (Tukey’s test, α = 0.05) following a significant (p ≤ 0.05) Latin square ANOVA. Treatments catching zero moths were excluded from statistical tests. 3 Test orchard received one weekly delivery of 4000 mixed-sex (1:1) sterile codling moths ha−1.