102 FARMING ON FACTORY LINES 



ordinary system of tillage, the machinery lies idle for 

 a very large part of the year, and in such circum- 

 stances the large expense involved is scarcely justifi- 

 able. It may also be pointed out that the problem of 

 quick autumn cultivation can be effectually solved by 

 the use of a good tractor and its complementary imple- 

 ments. 



With a good motor of from 20 to 25 b.h.p., a disc 

 harrow from 8 to 10 feet wide, the discs 20 inches, or 

 better still, 22 inches in diameter, and a strong drag, 

 or cultivator, from 6 to 10 acres per day of stubble 

 land can be got ready for seeding. 



Horses are necessary for the final refining of the 

 soil, a spring-tooth and common harrow being used 

 for the purpose. Even when land has already become 

 so dry that the disc harrow when weighted will not 

 penetrate, or when this implement does not suffice 

 to bury the rubbish, a motor disc plough can be used 

 for the purpose. It is precisely under such conditions 

 that a disc plough can work to the best advantage. 



TARES AFTER POTATOES AND ROOTS 



As previously stated, tares can be sown on the lea 

 — either old lea or new. On such land, ploughing, 

 of course, is essential. The after-preparation of the 

 land and the sowing of the crops are precisely the 

 same as for an ordinary corn crop, and thus calls for 

 no special description. 



After a potato crop, the land will very seldom 

 indeed require to be ploughed. The only condition 

 when ploughing is necessary is when the land is either 

 weedy or foul, and the object of the ploughing is to 

 turn in the dirt. After either potatoes or roots, land 

 should, of course, not be foul, but in the rush times 



