1902.] 



PUBLIC DOCUMENT — No. 33. 



47 



The average yield of the entire area for this year is 6,859 

 pounds. The average for the period 1893 to the beginning 

 of the present year was 6,615 pounds per acre. The plots 

 when dressed with manure have averaged (3,878 pounds per 

 acre ; when dressed with bone and potash, 6,(349 pounds ; 

 and when receiving wood ashes, 6,309 pounds per acre. 

 The average yields obtained on this field arc surely very 

 satisfactory. They are obtained at a cost for fertilizing 

 materials applied which renders the hay crop decidedly 

 profitable. 



XII. — Nitrate of Soda for Rowen. 



We began last year experiments calculated to show to 

 what extent a small application of nitrate of soda applied 

 after the removal of the first crop of hay would benefit the 

 crop of rowen. The results last year showed increase in the 

 rowen crop sufficient to render the application a paying one. 

 These experiments have been continued this year, and have 

 been carried out on two fields : — 



1. On an old sod seeded in 1887, where the prevailing 

 species is Kentucky blue grass, and which received in the 

 spring an application of wood ashes at the rate of 1 ton to 

 the acre and nitrate of soda at the rate of 150 pounds per 

 acre. The first crop was cut June 17. The nitrate of soda 

 was applied to two sub-plots, constituting about one-half of 

 the field, at the rate of 150 pounds per acre on July 3. The 

 results are shown in the table : — 



Nitrate of Soda for Rowen. — Yields per Acre (Pounds). 



Plots. 



Nitrate used. 



Total 

 Rowen 

 Crop. 



Plot 1, 

 Plot 2, 

 Plot 3, 



Plot 4, 



No nitrate, 



150 pounds per acre, 



No nitrate, 



150 pounds per acre, 



1,775 

 2,331 

 1,971 

 2,556 



The average rates of yield per acre are 



No nitrate, 

 Nitrate, . 



Pounds. 

 1,873 

 2,444 



