Begonia disease management.
Most common Begonia diseases.
Disease
Active ingredients (rate in chemical)
Active Ingredient concentration in solution*
Use as prophylactic
mancozeb (640 g/kg) + mefenoxam (metalaxyl-M) (40 g/kg)
3.2 g/l mancozeb + 0.2 g/l mefenoxam
+
azoxystrobin (200 g/l) + cyproconazole (80 g/l)
0.4 g/l azoxystrobin + 0.16 g/l cyproconazole
Powdery mildew
pyraclostrobin (12.8 %) + boscalid (25.2 %)
0.08 g/l pyraclostrobin + 0.16 boscalid
triflumizole (42,14%)
0.18 g/l
iprodione (50%)
1.25 g/l
tetrachloroisophthalonitrile (82.5%)
0.83 – 1.2 g/l
Botrytis
fenhexamid (50%)
0.5 – 0,75 g/l
pentachloronitrobenzene (75%)
0.75 – 1,25 g/l
* Rotate active ingredients (AI). Don’t apply the same AI more than 3 times at row.
Don’t forget to check phytotoxicity!
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