the use of Nitrate on the ground that it would leach p^ t g 0r 

 away. A case is yet to be seen where the after effects — 

 of Nitrate are not distinguishable, and in most cases such 2 59 

 effects have been marked. The two thousand tons of 

 active top soil in an acre of land have a powerful holding 

 capacity for all the useful available elements of fertility. 

 These 2,000 tons form the part usually subject to cul- 

 tivation and might be called service soil. 



For market gardening crops, hops, sugar-beets 

 and other cultivated crops, two hundred pounds of 

 Nitrate per acre may be used to great advantage. 



When the above amounts of phosphatic and potas- 

 sic fertilizers are used, as much as two hundred and fifty 

 pounds of Nitrate, or even more, may be applied with 

 profit. 



If you have any reason to suspect adulteration of 

 Nitrate, send a pound or so of it to your Experiment 

 Station for analysis, giving date of purchase, full name 

 and address of dealer and of the company which the 

 seller represents, with full description of marks on the 

 bag or bags from which you draw the sample. 



On the Pacific Coast, Nitrate may be applied as a 

 top-dressing after the heavy Spring rains are over, but 

 before crops attain much of a start; although recent 

 experience in California suggests that Nitrate may be 

 applied to better advantage just as soon as growth 

 starts in the Spring, or better, before seeding or plant- 

 ing. 



When Nitrate is applied at the rate of two hun- 

 dred (200) pounds per acre for cultivated crops and 

 used alone this application figures out at the rate of 

 8 oz. for a plot 10x10. This application is equivalent 

 to about 1 oz. to the square yard. 



So many inquiries have been made requesting 

 amounts to be applied to small areas that the above 

 word is given in this connection. 



