Soil Fumigation 



Carbon bisulphide is one of the most effective soil 

 fumigants. Holes are bored to the depth of about 

 6 or 8 inches, one to each square yard, and into each 

 a teaspoonful of carbon bisulphide is poured, the 

 hole being covered up immediately. The Uquid is 

 very inflammable and explosive, exceedingly evil- 

 smelling, and rather expensive, but its fumes, while 

 practically innocuous to the roots of plants, are 

 deadly to all animals. Even mice and wasps may be 

 kiUed by their means, as well as wireworms, leather- 

 jackets, and the ground forms of aphides, such as 

 the woolly aphis and the aphis of the lettuce and of 

 Primula roots. Phylloxera on vines (but drowning 

 is often effective for that ; the roots are submerged 

 for three weeks), and so on. 



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