168 MUCK CROPS 



ceases. In this way, it is possible to have a 

 continuous supply of lettuce throughout the 

 season. In some cases, two crops of lettuce 

 can be grown on the same land in the season, 

 thus doubling the returns. 



Cultivation. The very best of shallow 

 cultivation is given. This cultivation is pos- 

 sible with the shallow-working wheeled hoes 

 or the shuffle hoe. The number of times the 

 crop is cultivated during the season varies 

 from 4 to 15 times. If the crop has been pre- 

 ceded by a crop that is naturally weedy, such 

 as onions, more cultivations will be neces- 

 sary to keep the weeds down. If the crop 

 has been preceded by a crop of celery and 

 the weeds are not so numerous and rains not 

 too frequent during the season, fewer culti- 

 vations will be necessary. One of the best 

 tools for cultivating lettuce when small, is 

 the disc-wheeled harrow, man power. With 

 a good man, it is possible to work all but a 

 half inch of the soil. The half inch would 

 be in the row. By this process, hand weed- 

 ing is practically done away with. 



Irrigation. Lettuce is also greatly bene- 

 fited by applications of water during certain 

 periods in its life. Probably the most suc- 

 cessful form of irrigation is overhead. This 



