After sprinkling, place the grain in a conical pile and cover with horse-blankets, gunny sacks, etc. The smut that does the damage lies just under the glume of the oats or on the basal hairs of the wheat. Covering the treated grain holds the gas from the formalin within the pile, where it comes in contact with the kernels, killing such smut spores as may have survived the previous treatment. After the grain has remained in a covered pile 2 to 4 hours, spread it out again where the wind can blow over it, to air and dry.
As soon as the grain can be taken in the hand without the kernels sticking together, it can be sown in the field. The grain may be treated in the forenoon and seeded in the afternoon.
Since this treatment swells the kernels it hastens germination and should be done in the spring just before seeding time.
While the copper sulphate or bluestone treatment is valuable in killing smut, the formalin treatment can be given in less time, is applied so easily and is so effectual that it is recommended as a sure and ready means of killing smut in wheat and oats.
GRAINING CRAYONS: See Crayons.
GRAINING COLORS: See Pigments.
GRAINING WITH PAINT: See Paint.
GRAINING, PALISANDER: See Palisander.
GRAPE JUICE, PRESERVATION OF: See Wines and Liquors.
GRAPHITE AS A LUBRICANT: See Lubricants.