86 CHARLES ANTHONY GOESSMANN 



8 tons and Plat II at the rate of 6 tons of manure 

 per acre. 



Plat III received 600 pounds of fine ground bone and 

 200 pounds of muriate of potash per acre. 



Plat IV received one ton of Canada ashes per 

 acre. 



In 1893, Plats I and II were combined and used as 

 one plat. Beginning with this year also a system of 

 rotation in manuring was instituted, Plats I and II 

 receiving wood ashes, Plat III barnyard manure, and 

 Plat IV bone and potash. This same system was con- 

 tinued in 1894. In 1895, another rotation of the same 

 manures was instituted. At the close of this year Plat 

 I, which had received manure for most of the time, had 

 averaged at the rate of 3.56 tons; Plat HE, 3.25 tons; 

 and Plat IV, 2.90 tons of hay to the acre. These experi- 

 ments were continued by Brooks. After the plats had 

 been in grass ten years, Brooks stated that since 1893, 

 during the continuance of the rotation system of 

 manuring, the field had averaged 3.4 tons of hay and 

 rowen per acre. The plats when dressed with manure 

 averaged 3.6 tons, with bone and potash 3.33 tons, and 

 with ashes 3.27 tons per acre. Brooks further says that 

 'this system of using these different manures for grass 

 lands in rotation has much to commend it. It is 

 simple and has given remarkably good crops.' The 

 writer remarks that it shows what natural grass-land 

 can be made to produce when f airly well fertilized each 

 year. Moisture and plant-food are the controlling fac- 

 tors in hay production. 



