BEEKEEPING IN COLORADO i:^, 



General symptoms of Sacbrood: In sacbrood the larvae die after 

 the cells are capped and the bees remove the capping or puncture the 

 cells as in American foulbrood. However, thei'e is a difference in that 

 the sacbrood punctures are larger and usually onl}^ one. The larvae 

 turns black and curls up, and can be easily removed. When punc- 

 tured the larvae appears as a granular mass with more or less watery 

 appearance. 



Treatment of Sacbrood: The disease at its worst is not very de- 

 structive, and when it does make its appearance it affects so few lar- 

 vae in the colony that it need not cause any great alarm. 



HOW FOULBROOD IS SPREAD 



Shipping bees: According to the report of the State Entomologist 

 for 1917-18, Bulletin 20, Wisconsin State Department of Agriculture, 

 the spread of American foulbrood from one state to another or over 

 widely separated areas, is due to shipping disea.sed bees and infected 

 equipment or honey. 



Aside from buying diseased bees and shij^ping them into disease 

 free territory, the buying of used combs and equipment is one of the 

 most dangerous things a beekeeper can do. Generally the beekeeper 

 that has old equipment to sell has lost his bees from disease. Old 

 combs from such sources generally carry disease and should never be 

 used. 



Second-hand hives and equipment should never be used without 

 first scraping and scorching or washing them in hot lye water. 



Spread of disease locally is caused by exposing infected honey to 

 robber bees or interchanging infected combs from diseased to healthy 

 colonies. 



Brood-free dry extracting combs from colonies infected witli the 

 disease should never be used, as the amount of disease cari-ied is 2.') 

 percent.* 



Feeding the bees extracted honey is dangerous even though one may 

 not suspect disease in his apiary. If disease is in the locality, one may 

 overlook it until it is too late. It is much better to feed sugar syrup. 



Disease in Buildings, Trees and Rocks : In inspection work one is 

 frequently met by the statement that it is of no value to clean up 

 foulbrood in his apiaries as long as the bees in trees, crevices in the 

 rocks, between the walls of buildings, etc., cannot be inspected, as the 

 disease will be redistributed over the area from this source. It is true 



•H. F. Wilsou. BuUetin 333, "How to Control .Vmerican B'oulbrooil' Agricultural 

 Experiment Station, University of Wisconsin. 



