THE MONTHLY BULLETIN. 



223 



il will certainly injure considerable grain; thai tl os1 will exceed the 



ordinary methods; thai ultimately the w Is will be I"" scattered to 



|.;i\ for the work, and, finally, the farmer will be lefl to cultivation 

 and pulling, These arguments, with the exception of the possible one 

 regarding cost, furnish their own answers. There are extended areas 

 under grain culture, wheat, oats, barley, fiax, and extended areas in 

 pasture land, which are so thoroughly infested by seeds of certain 



uoxious v\ Is thai any method which maj be used successfully in 



destroying an entire weed crop for one or more years, preventing the 

 addition of new seeds in the soil, will be welcomed by the farmers. 

 This chemical method of weed eradication has the peculiar meril thai 



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l"ii :. 52. Section 

 Ing Chi grou 

 (Original, i 



i of field No. -. The young mustard plants are Bhown cover 

 „,l much more heavily than the grain. March 28, 1911 



the weeds may be attacked while a crop is being grown and the crops 

 will still give an increased yield, [f there were no weeds a1 all, il is 

 quite probable thai in some cases the spraying process would reduce 



the yield. However, far rs will, of course, no1 spray a field in 



which the weeds are bo scattering thai they may be pulled by hand 

 al a reasonable cost, withoul injury to the growing crop. The writer 

 has conducted experiments on sufficiently extended scale, and over a 

 sufficiently extended number of years, to guarantee thai where ordi- 

 nary weeds such as mustard, king-head, wild buckwheat and Canada. 

 thistle are sufficiently thick to make il impossible for the farmer to 

 ,miII the weeds in the -rain, such fields ran be sprayed so as to 



