PLOWING TO KILL WEEDS 



83 





A portion of the field shown on page eighfy-two plowed with the same 

 plow without the combined rolling coulter and jointer. These tall 

 weeds were thick all offer the field when the ground was plowed prepar- 

 atory to growing this crop. 



assimilating process. It is a difficult task to attempt to 

 do this work by hand in large fields. The work must be 

 done with tillage implements.. 



The first step is to fall plow as deeply as it is possible 

 for the plow to operate. The deeper the weed seeds are 

 turned under the better. Every leaf, stem, and all the 

 seeds must be turned to the bottom of the furrow. For 

 this reason it is unwise to disk such ground in the fall 

 before plowing it. Experiments have been tried which 

 proved beyond a question of a doubt that the action of 

 the disk harrow in ground of this kind has a tendency to 

 sow the seed rather than eradicate it, while leaving the 

 surface of the ground unmolested and turning all surface 

 trash completely under with a plow has rid a field of all 

 classes of weeds. 



