used. The rows should be about three feet apart, and the Food for 



seed dropped fifteen inches apart in the rows. 



Formula for Potatoes: X 3 X 



AMOUNT OF FERTILIZER USED PER ACRE. 



Nitrate of Soda 200 Ibs. 



Muriate of Potash i oo ' 



Superphosphate 300 ' 



The land is first marked and a fur- 

 rower run along the rows, making a furrow Applying 

 about four inches deep. In this furrow the Fertilizers for 

 fertilizer is applied, either by hand, or with Potatoes, 

 a distributor, and well mixed with the soil. This is best done 

 by running a cultivator along the row ; or when a distributor 

 is used, an attachment in the form of a small cultivator can 

 be made to do the work at one operation. The potatoes are 

 then dropped in the furrow and covered. If it is thought best 

 to cultivate both ways, the land can be marked across the fur- 

 rows after the fertilizer is applied. 



Several experiments have been tried on the use of Ni- 

 trate of Soda as a top-dressing for early potatoes. This was 

 applied at the rate of 100 pounds per acre, after the potatoes 

 were up and started to growing. One year this treatment 

 increased the yield of merchantable potatoes 100 bushels per 

 acre, and the average of several years was 20 per cent, 

 increase. 



A Private Experimenter obtained results as below: 



1. 400 pounds superphosphate and 300 pounds sul- 

 phate of potash 245 bushels per acre. 



2. Same as plot i with the addition of 200 pounds of 



Nitrate of Soda 348 bushels per acre. 



It is evident from the fact that the addition of 200 

 pounds of Nitrate of Soda produced 103 bushels more than 

 the superphosphate and potash alone, that potatoes must have 

 Nitrogen, and that in greater quantities than is supplied by 

 the ordinary so-called "Complete Potato Manure." 



Although the United States is a vastly larger country 

 than Germany, we raised a potato crop in 1905 of only 

 260,741,294 bushels, as compared with the potato crop of 

 1,775,579,073 bushels which Germany raised. These 

 bushels were of 60 pounds each. The explanation of so im- 

 mense a production of potatoes by Germany is found in the 



