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Table 3 Severity of scab on pecan fruit by provenance in 2018 and 2019 at Byron, GA, USA

From: Foliage and fruit susceptibility of a pecan provenance collection to scab, caused by Venturia effusa

Provenance Most scabbed Overall
2018 2019 2018 2019
% severitya (rank) 95% CI % severity (rank) 95% CI % severity (rank) 95% CI % severity (rank) 95% CI
IL-J 0.27 FGb (14)c 0.12–0.59 0.11 E (18) 0.05–0.24 0.19 E (13) 0.09–0.4 0.1 C (18) 0.05–0.22
KS-C 2.31 CDEF (9) 0.88–6.05 0.26 DE (11) 0.11–0.63 0.6 CDE (9) 0.25–1.47 0.19 C (11) 0.08–0.45
KS-K 0.85 DEFG (10) 0.32–2.24 0.2 DE (12) 0.08–0.51 0.31 DE (10) 0.13–0.78 0.14 C (13) 0.06–0.34
KY-W 0.24 FG (15) 0.09–0.66 0.15 DE (15) 0.06–0.39 0.16 E (15) 0.06–0.39 0.14 C (14) 0.06–0.33
MO-L 0.23 FG (16) 0.07–0.69 0.13 DE (16) 0.04–0.44 0.12 E (18) 0.04–0.33 0.1 C (17) 0.03–0.33
MO-V 0.59 DEFG (12) 0.23–1.49 0.17 DE (13) 0.07–0.43 0.19 E (14) 0.08–0.44 0.15 C (12) 0.06–0.36
MS-W 0.19 FG (17) 0.06–0.58 0.16 DE (14) 0.06–0.43 0.16 E (16) 0.06–0.43 0.11 C (15) 0.04–0.3
MX-C 19.27 ABC (5) 6.94–53.52 18.6 AB (6) 7.37–46.92 5.35 ABC (5) 2.07–13.82 8.5 AB (7) 3.46–20.84
MX-I 5.58 BCD (8) 2.45–12.69 6.19 BC (8) 2.94–13.04 2.4 BCD (8) 1.09–5.26 3.33 B (8) 1.59–6.97
MX-J 0.7 EFG (11) 0.31–1.54 0.86 D (10) 0.41–1.77 0.27 E (11) 0.12–0.57 0.44 C (9) 0.22–0.92
MX-O 22.98 ABC (4) 7.49–70.54 19.73 AB (5) 7.29–53.39 5.13 ABC (6) 1.88–13.95 8.53 AB (6) 3.34–21.77
MX-S 27.48 ABC (3) 9.46–79.78 29.36 AB (4) 10.97–78.56 8.89 AB (3) 3.43–23.06 13.96 AB (4) 5.54–35.19
TN-L 0.14 G (19) 0.06–0.35 0.12 DE (17) 0.05–0.29 0.11 E (19) 0.05–0.25 0.11 C (16) 0.05–0.24
TX-B 0.19 G (18) 0.08–0.43 0.1 E (19) 0.04–0.24 0.12 E (17) 0.05–0.26 0.1 C (19) 0.05–0.23
TX-G 0.5 EFG (13) 0.22–1.15 0.93 CD (9) 0.43–2.03 0.26 E (12) 0.12–0.58 0.36 C (10) 0.17–0.78
TX-K 49.1 AB (2) 20.49–117.66 49.65 A (1) 21.74–113.4 29.03 A (2) 12.84–65.65 33.95 A (1) 15.27–75.49
TX-T 70.34 A (1) 29.29–168.93 38.11 AB (2) 16.14–90 38.82 A (1) 17.14–87.94 22.43 AB (3) 9.83–51.17
TX-V 6.93 ABCDE (7) 1.64–29.34 32.85 AB (3) 7.42–145.41 5.05 ABCD (7) 1.45–17.63 27.27 AB (2) 6.99–106.4
TX-Z 16.63 ABC (6) 6.75–41 15.58 AB (7) 6.18–39.27 5.89 AB (4) 2.55–13.62 9.12 AB (5) 3.77–22.04
F value (P) 21.2 (< 0.0001)   28.4 (< 0.0001)   21.6 (< 0.0001)   26.8 (< 0.0001)  
  1. In both years two scab severity estimates were taken, (1) a visual assessment of the most severely scabbed fruit, and (2) an overall assessment of the severity on fruit in the tree canopy. Estimates were based on a quantitative ordinal scale taking interval mid-points prior to analysis (Chiang et al. 2014)
  2. aThe % area diseased estimates were natural log transformed. Back transformed values are presented with means separation based on transformed values. The 95% CIs are back transformed values such that the upper confidence limit is EXP(LNmean + LNupperCI), and the lower confidence limit is EXP(LNmean − LNlower)
  3. bMeans separation was based on the Tukey-Kramer method (α = 0.05)
  4. cRank is the ranking order of magnitude from highest severity to lowest severity