Bacterial spot – Apricots 杏——疮痂病 Alexin 3 x 500mL b b b Alexin 3 x 300mLb b a a BebecoPal Steynb Alexin 3 x 200mLUntreated Control0 0@P%% Fruit infected Treated from 5mm fruit size, every 14 days
b Alexin, no copper 3x at 28 day intervals
Bacterial spot – Peaches 桃——疮痂病 b Alexin, no copper 3x at 14 day intervals b Copper and Alexin Programme b
Standard Programme
Untreated Control
0%
5%
a 10% 15% 20% 25% 30% 35%
% Infected Fruit Copper at leaf drop + bud swell, Alexin from 75% petal drop
Percentage leaves with bacterial spot lesions on plum trees on the farm Theewaterskloof, Villiersdorp李树细菌性穿孔病
100.00%
80.00%
Percentage infected leaves Songold 60.00%
Laetitia 40.00%
20.00%
Dosage : ? 200 - 300 ml / 100 lit ? 2 – 3 lit / ha Interval : ? 21 – 28 days
0.00%
Visual observations – Xanthomonas on peaches. Shot hole damage
桃树穿孔病
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