For liquid oxalic acid solution in sugar syrup application we use Auto Drenching gun (Phillips or Vyrvet). These are self-filling version and easy to adjust the dose. When it gets cold and the 50% sugar syrup is thick, you can heat the syrup to lukewarm. The other option that we tested we cut down the sugar syrup concentration to 30%. It is easy to use the applicators and did not affect the efficacy.

Medhat

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