Hi Bulbplantfriends , Many thanks for all your answers to Bill , Stefan , Matt and John . To your answers : chlorothalonil - this is difficould for me to receive , it is in BRAVO 500 - only for farmers . sodium hydrochlorite - I dont know what this is - I have it not found in german internet pages .I will send you some informations to Twin Scaling . Dithane ( 945 ) I know this fungizid - the active is Mancoceb - not Carbendazim . I think I will try it with this - I have it . To Carbendazim : A other plantfriend give me this information also - I have found in the internet : This active is in :ROVRAL,HARVESAN,DEROSAL....and some others , this will also used by farmers. Greetings to all Hans