Evaluation of Copper and Non-copper Bactericides, and ...

Bacterial Spot Severity (%): Disease Fruit % MarketableTreatment, rate/A (apps. 1-7; unless noted) 12-May 1-Jun AUDPC Weight (lbs) (by weight)Actigard, 0.5oz 0.359 ijk 0.949 efg 2369 h-k 1.7 b-f 0.946 ghActinovate, 3oz 0.619 ab 0.972 ab 3530 ab 1.4 c-g 0.970 a-gActinovate, 3oz; Actigard, 0.33oz 0.422 f-j 0.934 gh 2629 f-j 2.2 a-d 0.948 ghActinovate, 3oz; Cuprofix 40D, 1lb; Penncozeb75DF, 0.5lb 0.347 jk 0.967 bcd 2338 ijk 0.7 fg 0.981 a-dActinovate, 3oz; Cuprofix 40D, 2lb; Penncozeb75DF, 0.5lb 0.542 a-e 0.967 bcd 3206 a-e 1.0 efg 0.980 a-eBEXP 141 AG, 0.5%v/v 0.500 c-f 0.977 ab 3028 a-f 1.4 c-g 0.958 c-gBEXP 141 AG, 1%v/v 0.458 e-j 0.967 bcd 2837 c-h 1.3 c-g 0.972 a-gBEXP 141 AG, 2%v/v 0.500 c-f 0.967 bcd 3016 a-f 1.2 c-g 0.967 a-gControl (water only) 0.542 a-e 0.977 ab 3215 a-e 1.7 b-e 0.954 f-hCuprofix 40D, 2lb; FeCl 3·6H 2 O, 1.75oz/100 gal 0.500 c-f 0.972 abc 3023 a-f 1.0 efg 0.977 a-fCuprofix 40D, 2lb; FeCl 3·6H 2 O, 3.5oz/100 gal 0.375 h-k 0.981 a 2532 f-j 1.1 c-g 0.966 a-gCuprofix 40D, 2lb; FeCl 3·6H 2 O, 6.5oz/100 gal 0.347 jk 0.934 gh 2309 jk 1.0 efg 0.969 a-gCuprofix 40D, 2lb; Penncozeb 75DF, 0.5lb 0.506 b-f 0.961 cde 2992 b-g 1.8 b-e 0.960 c-gHeadsUp, 1g/L (transplants and at planting) 0.584 abc 0.977 ab 3416 abc 3.7 a 0.892 iHMO736, 14fl oz; Kocide 3000, 1.75lb;Penncozeb 75DF, 0.5lb 0.381 g-k 0.967 bcd 2501 g-j 0.7 g 0.986 aKasumin 2L, 100ppm 0.286 kl 0.918 hi 2053 kl 2.7 ab 0.946 ghKasumin 2L, 100ppm; Tactic, 0.0625% v/v 0.224 l 0.905 i 1775 l 2.2 abc 0.956 e-hKasumin 2L, 50ppm; Tactic, 0.0625% v/v 0.584 abc 0.949 efg 3389 abc 3.0 ab 0.921 hiKocide 3000, 1.75lb 0.494 c-g 0.972 abc 2945 b-g 1.2 c-g 0.971 a-gKocide 3000, 1.75lb; Penncozeb 75DF, 0.5lb 0.578 a-d 0.955 def 3311 a-d 1.8 b-e 0.957 d-gManKocide, lb 0.483 c-h 0.967 bcd 2856 c-g 1.3 c-g 0.977 a-fNordox 75W, 2lb; Penncozeb 75DF, 0.5lb 0.347 jk 0.930 gh 2293 jk 0.7 g 0.983 abQRD146, 0.5lb; Kocide 3000, 1.75lb 0.422 f-j 0.967 bcd 2656 f-j 1.1 d-g 0.976 a-fQRD146, 0.75lb; Kocide 3000, 1.75lb 0.506 b-f 0.955 def 2980 b-g 1.3 c-g 0.963 b-gQRD146, 1lb; Kocide 3000, 1.75lb 0.464 d-i 0.942 fg 2795 d-i 1.7 b-e 0.958 c-gSAver, 0.75mls/L 0.542 a-e 0.977 ab 3215 a-e 1.9 b-e 0.958 c-gSAver, 2.5mls/L 0.625 a 0.955 def 3610 a 1.7 b-e 0.954 f-hSerenade Max, 1lb; Kocide 3000, 1.75lb 0.416 f-j 0.981 a 2689 e-j 0.9 efg 0.981 abcP < 0.0001 P < 0.0001 P < 0.0001 P = 0.0074 P = 0.0006Bacterial spot severity was assessed as the percentage of total leaf area affected by disease using the Horsfall-Barratt scale; valueswere converted to mid-percentages and fit to a lognormal distribution for final statistical analysis. Area under the disease progresscurves (AUDPC) was calculated using the formula: Σ([(x i +x i-1 )/2](t i -t i-1 )) where x i is the rating at each evaluation time and (t i -t i-1 ) isthe time between evaluations. Means followed by the same letter are not significantly different at α=0.05.

Fruit weight by market type (lbs): Marketable TotalTreatment, rate/A (apps. 1-7; unlessnoted) Small Medium Large X. Large Fruit FruitActigard, 0.5oz 2.5 4.8 ab 6.9 20.6 h 35.6 fgh 37.8 efgActinovate, 3oz 4.5 4.2 a-f 8.3 26.1 a-h 43.7 a-f 45.2 a-fActinovate, 3oz; Actigard, 0.33oz 4.2 4.8 ab 7.6 22.9 e-h 40.1 b-g 42.3 a-gActinovate, 3oz; Cuprofix 40D, 1lb;Penncozeb 75DF, 0.5lb 2.3 3.9 b-g 8.3 25.6 a-h 40.7 a-g 41.6 b-gActinovate, 3oz; Cuprofix 40D, 2lb;Penncozeb 75DF, 0.5lb 3.9 4.8 ab 9.1 31.0 a-e 49.2 ab 50.4 abcBEXP 141 AG, 0.5%v/v 2.9 3.5 b-i 6.4 19.5 hi 33.1 gh 34.6 gBEXP 141 AG, 1%v/v 3.4 4.3 a-f 7.4 26.0 a-h 41.8 a-g 43.5 a-gBEXP 141 AG, 2%v/v 3.4 3.3 c-i 6.6 20.0 h 34.1 gh 35.3 gControl (water only) 4.0 3.7 b-g 6.4 21.5 gh 36.4 d-h 38.3 efgCuprofix 40D, 2lb; FeCl 3·6H 2 O,1.75oz/100 gal 3.9 3.1 e-i 8.9 28.4 a-g 44.9 a-f 46.1 a-fCuprofix 40D, 2lb; FeCl 3·6H 2 O,3.5oz/100 gal 2.2 2.4 i 6.3 24.4 d-h 36.2 e-h 37.6 efgCuprofix 40D, 2lb; FeCl 3·6H 2 O,6.5oz/100 gal 2.1 3.2 d-i 7.1 23.1 e-h 36.2 e-h 37.3 fgCuprofix 40D, 2lb; Penncozeb 75DF,0.5lb 2.0 4.5 a-d 9.3 24.4 d-h 40.6 a-g 42.6 a-gHeadsUp, 1g/L (transplants and atplanting) 4.8 4.9 ab 7.1 13.4 i 30.4 h 34.1 gHMO736, 14fl oz; Kocide 3000, 1.75lb;Penncozeb 75DF, 0.5lb 3.6 4.0 b-g 7.7 34.1 a 50.1 ab 51.3 abKasumin 2L, 100ppm 4.1 4.1 b-f 11.2 25.5 b-h 46.1 a-d 48.9 a-dKasumin 2L, 100ppm; Tactic, 0.0625%v/v 3.0 5.7 a 8.3 31.8 a-d 49.4 ab 51.8 abKasumin 2L, 50ppm; Tactic, 0.0625% v/v 2.7 4.7 abc 6.8 21.7 fgh 36.5 c-h 39.6 d-gKocide 3000, 1.75lb 2.6 3.0 f-i 8.4 29.5 a-f 43.8 a-f 45.2 a-fKocide 3000, 1.75lb; Penncozeb 75DF,0.5lb 2.5 3.5 b-i 6.7 25.3 c-h 38.7 c-h 40.8 c-gManKocide, lb 3.4 4.4 a-e 8.3 34.0 ab 50.8 a 52.5 aNordox 75W, 2lb; Penncozeb 75DF, 0.5lb 2.5 2.6 hi 6.8 33.1 abc 45.4 a-e 46.3 a-fQRD146, 0.5lb; Kocide 3000, 1.75lb 2.7 3.9 b-g 8.2 29.5 a-f 46.3 abc 47.5 a-eQRD146, 0.75lb; Kocide 3000, 1.75lb 1.6 3.6 b-i 6.9 25.7 a-h 38.3 c-h 39.9 d-gQRD146, 1lb; Kocide 3000, 1.75lb 2.3 4.3 a-f 7.9 26.5 a-h 41.3 a-g 43.2 a-gSAver, 0.75mls/L 3.9 4.7 abc 8.7 26.7 a-h 44.8 a-f 46.9 a-fSAver, 2.5mls/L 1.9 2.8 ghi 7.8 25.0 c-h 37.9 c-h 40.1 c-gSerenade Max, 1lb; Kocide 3000, 1.75lb 2.5 4.3 a-f 7.2 29.9 a-e 44.4 a-f 45.5 a-fP = 0.0853 P = 0.0145 P = 0.3250 P = 0.0036 P = 0.0266 P = 0.0668α = 0.10Yields are based on a single harvest. Means followed by the same letter are not significantly different at α=0.05, unless otherwisenoted.