'I'ankage, 20 lbs. 



Acid phosphate, 35 lbs. 



High grade sulfate of potash, 18 lbs. 

 Use 1600 to 2000 pounds per acre. 

 B. For use in connection with manure : 



1. On clover sod or soils rich in humus : 

 In each 100 pounds: 



Nitrate of soda, 8 lbs. 



Dried blood, 5 lbs. 



Acid phosphate, 60 lbs. 



High grade sulfate of potash, 27 lbs. 

 Use 600 to 1000 pounds per acre. 



2. On lighter and poorer soils : 

 In each 100 pounds : 



Nitrate of soda, 8 lbs. 



Dried blood, 10 lbs. 



Tankage, 20 lbs. 



Acid phosphate, 40 lbs. 



High grade sulfate of potash. 22 lbs. 

 Use 800 to 1200 pounds per acre. 



Conditions under which Muriate of Potash may be Substi- 

 tuted for Sulfate: If the soil on which potatoes are to be grown 

 is of coarse texture and deficient in capacity to retain water and if 

 experience indicates a considerable probability that the crop at some 

 period in its growth will suffer from drouth, it may be wise to substi- 

 tute muriate of potash for the high grade sulfate recommended in 

 any of the above mixtures. As already indicated, the substitution 

 of muriate for the high grade sulfate may be especially advisable if 

 in addition to being light, the soil is naturally rich in lime. 



Method of Applying; If the potatoes are to be planted by hand, 

 good results maybe obtained by opening the furrows and then scat- 

 tering the material widely the full length of the furrow, making it 

 cover not only the entire furrow, but a space a few inches in width 

 on each side. If spread in this way, the fertilizer will not be 

 so thick that it will be necessary to take any special steps to 

 mix it with the soil. It will be sufficiently mixed in cover- 

 ing the seed. If planting is done by machine, the fertilizer attach- 

 ment of the machine should be one which scatters the fertilizer 

 over a relatively wide area. If such a machine cannot be used, it 

 may be best to withhold a portion of the fertilizer until the crop is 

 three or four inches high, when it should be scattered along lines 

 six to eisht inches wide on either side of the row and cultivated in. 



