The Production of New and Improved Varieties of Timothy 365 



TABLE 3.- Showing Yields per Acre of Field-Dried Hay in 1910 and 191 i 

 OF 17 New Varieties of Timothy in Comparison with 



Ordinary Timothy* 



* In the above table the column headed " Check yield per acre estimated " may need explanation. 

 The comparison of two plats grown side by side may not be fair, as the land chrnges somewhat, even in 

 one rod. We desire to get as nearly as possible an estimated check yield for each plat of what the check 

 seed would have given if sown in that plat. Taking a specific illustration, in 1910 Check Plat 1,831 

 yielded 5,280 pounds per acre, and the ne.\t Check Plat, 1,83s, gave 5.800 pounds per acre. Evidently 

 for this season the land is getting better as we proceed toward the second Check Plat, 1,835. The dif- 

 ference between the two checks is 520 pounds. In every four plats there is one check and one fourth of 

 520 pounds is 130 pounds. Now if we add 130 to the yield of Plat 1,831 we get the estimated check yield 

 for Plat 1,832, which is 5,410 pounds. Adding 130 pounds to this gives us 5.540, the estimated check 

 for Plat 1,833. This will probably make the method clear. The correction number between each tv/'o 

 checks will obviously be a different number in most cases. 



