THE GROWING OF TARES 101 



sowing a crop, (not tares only, but any crop which is 

 rolled), the land in districts of light rainfall should 

 never be left rolled smooth. A light harrow should 

 always follow the roller, so as to roughen the surface, 

 and thus minimise the loss of moisture by checking 

 surface evaporation. 



In the Southern Counties of England there are 

 seasons when, even by the adoption of such 

 recommendations, the after- harvest weather may be 

 so dry as not to permit of early stubble cultivation 

 and sowing on anything like an extended afea. It is 

 under such conditions, and also, as is the case in the 

 Northern districts, generally, where the harvest is far 

 later than in the South, that the method of corn- 

 growing recommended in the previous chapter so as 

 to ensure an early harvest, and the method of inter- 

 cropping the tares, are likely to prove of the greatest 

 service. 



The matter of an adequate supply of soil moisture 

 in autumn has, of course, special reference to low 

 rainfall areas — the South of England generally and 

 the Eastern borders of the three countries. In most 

 other districts there is seldom much lack of moisture 

 during or after harvesting, the trouble generally 

 being, that there is too much. 



Still, in the wetter districts, the general 

 recommendation of quick tillage, because of the labour 

 economy involved, holds good. 



MOTOR CULTIVATION 



There exists a very subtle economic relationship be- 

 tween motors, motor implements, and other expensive 

 machinery and Continuous Cropping. By this system 

 of tillage such machinery can be kept at profitable 

 work for at least 80% of the year, whereas with the 



