Show cy rioNs roil TIIU THE USE or OF coppell DUST T do not uso use badly smutted wheat for s sel eed use only wheat with 1084 titan 5 per cent smut clean the seed well over a good bunning funning mill which will tree free it of na as many ot of the un broK i oil en smut balls as possible as aa well as take out weed seed freed then dust tn wheat with copper carbonate at anu rate ot of two to three ounces ot of tho the to a bushel of grain A leaping heaping tablespoon tab of copper carbonate dusi du L IV about 1 ounce use usa fairly pure leopper copper carbonate which contains contafi ns u little over 60 per cent copper it la is light green in tolor color never blue un loss impure Is insoluble in water and ivery finely powdered it is the cap copper pl r that acts as a poison to the smut commercial mixtures of copper carbonate sold on the market gen generally 0 rally contain legs copper that the standard copper carbonate I 1 having 25 26 per cent or less it if such compounds are it Is best to follow tho directions on oil the package in labet label or increase the treatment to three or tour four ounces of dust per bushel IA A thorough covering of the seed 1 i with the copper carbonate just dust must 10 lo 10 secured to give the best result resul lb ft good covering can be obtained by thoroughly mixing the grain ani and the recommended amount of dust in n P airtight air tight mixer such as a barrei churn or cement mixer with tight lid write to the extension service cot col orado agricultural college fort colllns collins for circular no ni 1 I which explains the copper carbonate treatment |