Emdication of the Canada Thistle. 121 



winter wheat. In the spring, sow clover 

 in the wheat crop, and after one, two, or 

 three crops of clover have been grown 

 repeat the same rotation. This method is 

 applicable to stifif soils where v/inter wheat 

 is a leading crop, and is especially success- 

 ful where the land first broken up was 

 clover sod. In localities where winter 

 wheat will not grow, substitute for the win- 

 ter wheat either spring wheat or barley, 

 as may be desired. There \\\\\ then be 

 ample time for autumn cultivation after the 

 sod land has been broken up ; if this time is 

 well employed, a great gain in the conflict 

 wMth the thistles will have been effected. 



5. Smothering by a clover crop, ivith a 

 cultivated crop foUozuing. Where land has 

 been sown to clover, cut the crop twice for 

 hay, or once for hay and once for seed. 

 Then follow with a properly cultivated 

 corn or root crop. The smothering influ- 

 ence of the two growths of clover, com- 

 bined wMth the efTect of the two cuttings 

 necessitated, will be found of much service 

 in w^eakening the thistles. 



6. Using the spud. When the thistles 

 have been well brought under, they should 

 be kept under by the use of the spud. The 



