Influence of Fertilizers on the Yield of Timothy Hay. 329 



A striking difference is noted in the greater average yield of the plats 

 receiving no fertilizer in 1906 than in 1905. In 1905 the eight plats receiv- 

 ing no fertilizer gave an average yield of 2160 pounds, while in 1906 these 

 same plats without any additional treatment of any kind gave an average 

 yield of 3365 pounds, or a yield fully 55 per cent greater. This increased 

 yield may be fairly attributed to more favorable weather conditions. 



The months of April, May and June in 1906 averaged higher in tem- 

 perature and rainfall than in 1905. The total rainfall during the three 

 months mentioned was 11.37 inches in 1905, and 12.54 inches in 1906 

 against a normal of 9.65 inches. This indicates unusually favorable 

 weather conditions for the growth of timothy. It is also probable that 

 these seasons have been especially favorable for the use of commercial 

 fertilizers and it may be that when seasons of normal or less than normal 

 rainfall occur during these months, that less benefit will be derived from 

 the application of fertilizers. 



♦Received no application of fertilizer in 1905. 



