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This investigation was carried out on 1-3 days old eggs, as well as on 1, 3 and 5 day old larvae. The bee brood was treated with Apiwarol AS or Fumilat in special chambers containing 1/5 of the beehive dadant. The dosage used was 5 times lower than that for normal bee families. In the control group with eggs, 91.9% bees were exterminated and approx. 83% treated with Apiwarol AS. The unfavourable effect...
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