240 Fertilizers 



at least one-half of the fertilizer should be applied broad- 

 cast and worked into the soil, and the remainder placed in 

 the row at the time of planting. Naturally, when the soils 

 are poor, a concentration of the constituents is more de- 

 sirable than when the surrounding soil possesses reasonably 

 abundant supplies of available food. 



The amount to be applied. (See Fig. 18.) 



As already stated, the amount of the different constit- 

 uents to be applied should be in considerable excess of 



FIG. 18. THE POTATO-PLANTER WITH FERTILIZER ATTACHMENT, 



WHICH DISTRIBUTES FERTILIZER EVENLY IN THE ROW. 



that required by the actual increase in crop, both for the 

 reasons already given, and because it is desirable in crops 

 of this sort to insure a continuous and abundant feeding 

 of the plant. Where "intensive" practice is general, 

 the amounts applied very frequently reach a ton to the 

 acre of the high-grade fertilizer already mentioned, though 

 the necessity for so large an application as this has been 

 questioned, particularly if it is expected to give rise to a 

 profitable return in the crop to which the application is 



