>   The standard I've most seen is to treat each hive with the
>equivalent of 4mg of medicine either two or three times in about a
>three week period. If you get the standard 6.7oz bag of Terramycin
>from Pfizer, this amount (4mg) is found in a level teaspoonful. Mix
>this well with three TABLESPOONS of confectioner's (powdered) sugar,
>and sprinkle over the tops of the outermost frames. The latter is to
>prevent the terramycin (which is toxic to brood) from trickling down
>into the central brood-rearing area.
>
>   For the 6.7oz bag of Terramycin, you get about 50 doses at the
>recommended level, so for three treatments per hive, you should be
>able to fully treat about 16 to 17 hives.
>
>   Hope this helps.
>
 
   Well, I was off by a factor of 50. In the above, the amount of
Terramycin to add (1 teaspoon per 3 Tablespoons of powdered sugar) IS
CORRECT for one treatment, but the dosage of "pure" terramycin in that
teaspoonful is 200mg, not 4mg. You should still treat 2 to 3 times
in a 3 week period, and a 6.7oz bag of Terramycin will still fully
treat 16 to 17 colonies, as stated before. I just got the dosage
figure wrong.
 
   Jeef
 
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Jeffrey P. Murray                       Georgia Institute of Technology
GTRI/ELSYS                              Georgia Tech Research Institute
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