1919.1 



PUBLIC DOCUMENT — No. 31. 



17a 



has been in grass each year. All plots, with the exception of 

 that portion of plots 1 and 2 west of the ditch, have been 

 reseeded once. 



The results for this year (1918) represent the yields on plots 

 a portion of which have been continuously in grass for thirty 

 years, and a portion of which have been continuously in grass 

 for sixteen years. 



Table I. — Yields per Acre under the Three Systems of Top-dressing, 



1918 (Pounds). 



1 No potash was applied in 1916, 1917 and 1918, and no slag in 1918. 



The average yield for the entire area this year was 3,976 

 pounds. 



Since 1915 it has been necessary to omit the potash three 

 years and the slag one year; therefore a better idea of the 

 merits of the system may be obtained by considering the 

 yields up to that time. 



Table II. — Yields j^er Acre under the Three Systems of Top-dressing 



(Pounds). 



! Beginning in 1912 a mixture of slag and potash has been substituted for the wood ashes. 



The different items entering into the cost of the production 

 of hay vary greatly on different farms. The figures given in 

 Table III. represent the average prices of fertilizer on the 

 farm and of hay in the barn in Amherst. The figures in the 



