Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . in a saucer or other open vesselset on their surface. It is absolutely necessary that the seeds be enclosedin a tight box or bin to get satisfactory results, and the time of exposureshould not be less than two nours. Carbon Tetrachlorid.—The disagreeable odor of commercial bisulphideof carbon renders it objectionable to some people for use on fabrics infestedwith moth, and has led to the suggestion that carbon tetrachlorid, which 1012 SUCCESSFUL FARMING lias a rather pleasant odor,
Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . in a saucer or other open vesselset on their surface. It is absolutely necessary that the seeds be enclosedin a tight box or bin to get satisfactory results, and the time of exposureshould not be less than two nours. Carbon Tetrachlorid.—The disagreeable odor of commercial bisulphideof carbon renders it objectionable to some people for use on fabrics infestedwith moth, and has led to the suggestion that carbon tetrachlorid, which 1012 SUCCESSFUL FARMING lias a rather pleasant odor, be used in its stead. This also is a fluid, and isused in the same way as carbon bisulphide, namely, by pouring it into opendishes or crocks and allowing it to evaporate in a box, bin or room. It is not nearly as effective in small quantities as either cyanide ofpotassium or carbon bisulphide, and the large quantities that must beused increase the cost of treatment. Para-dichlorobenzene.—This is a recently proposed fumigant and isnot yet in general use, because of its cost. It is not evil-smelling like. Making Preparations to Fumigate with Hydrocyanic edge of sheet tent and top of derrick ready to be pulled over tree. carbon bisulphide, and appears to be quite effective in destroying weevilsin grain and clothes moth. Since it is not inflammable, it can be moresafely used about dwellings, though its fumes have wonderful penetratingpower and escape in some quantity even from tightly stoppered a limited experience with it the writer is disposed to regard it veryfavorably for fumigating seeds and fabrics, though more extended testsmay show it to have defects that are not now apparent. Hydrocyanic Acid Gas.—This gas is made from cyanide of potassium(98 per cent), commercial sulphuric acid of good grade and water. The 1 Courtesy of U. S. Dept. of Agriculture. INSECTICIDES AND FUNGICIDES 1013 gas produced is very poisonous, as are also the cyanide of pot
Size: 1786px × 1399px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
