446 SOUTHERN FIELD CROPS 



dome cultivating implement in the open furrow. It is 

 usually better for the beds to be formed several weeks 

 before the date of transplanting, so as to permit the soil 

 to be settled by rain. The beds should be kept covered 

 with a loose layer of soil and free from crust and vegetation 

 by the repeated use of a light harrow. 



To produce the largest yield, the depth of plomng should 

 be considerable, and deep plowing should probably be 

 the rule where the crop is to be used as stock food. How- 

 ever, the market prefers a rather short potato, and this 

 shape is favored by rather shallow plowing; that is, to a 

 depth of not more than 5 inches. 



421. High and low beds. — AVliile level tillage can be 

 practiced for sweet-potatoes set out late on sandy, well- 

 drained soil, it is probably atlvisal)lc for the planting, as 

 a rule, to he done on beds ; however, these should be 

 IDulled down by the use of the harrow until elevated only 

 3 or 4 inches above the water-furrows. Planting on low 

 ridges affords a warmer, more perfectly drained soil. 

 The extremely high ridges sometimes seen add greatly 

 to the cost of cultivation, and unless the season be very 

 wet, high ridges do not materiallj' increase the yield. 



422. Tillage. — Cultivation should be given whenever 

 a crust begins to forni, or when the fir-st appearance of 

 young weeds or grass makes it necessary. Tillage should 

 be shallow. Tlie most satisfactory implements are those 

 forms of one-horse cultivators equipjied \\\i\\ small jjoints, 

 so as to be run as near as possible to the plants Anthout 

 covering them ^\^th soil. A scrape or any other imple- 

 ment doing shallow work is also suitable. Just before 

 each cultivation, if the vines have begun to nm, they 



