Bacillus thuringiensis

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This topic contains 2 replies, has 3 voices, and was last updated by  Mike Sheppard 6 years, 5 months ago.

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  • 20th September 2017 at 10:14 am #42385

    JD
    Participant

    Hi Charles,
    The storm last weeks blew the netting off my brassicas and as I hadn’t been able to get round for a week I think the Cabbage White’s have been having a field day. From your previous posts I sent off for some Bt but now it’s arrived (as DiPel)if there’s any instructions at all it’s in Italian. Can you help me out with how I’d make up say a 500ml spray strength solution. I think my 500g pack says there’s 54g of Bt in it. Hope you can help. Also do you need to keep reapplying after rain?
    Thanks Charles
    Jan

    21st September 2017 at 5:00 am #42392

    charles
    Moderator

    Jan for 500ml I would use about a half teaspoon

    29th November 2017 at 3:14 pm #43585

    Mike Sheppard
    Participant

    Hi Charles,
    Not sure if the answer is the same as Jan. My Bt came from China with limited English instructions. In your vid you say use 2grms (about 1 tsp) but you don’t say how much water. My Bt is Aizawa Bta / kurstaki Btk. What ratio water/product would you suggest to make 1 ltr soln. please.
    Many Thanks,
    Mike

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