8 



X. IT. EXPERIMENT STATION 



[Bulletin 320 



Junipers at least eight or ten years old were cut on part of the area 

 during the course of the test, although in the main the plots were 

 well sodded over, and free from brush. 



A Comparison of Different Levels of Nitrogen 



In botli these pastures, a dmiparison was made between 25 and 

 50 pounds of nitrogen per acre annually, from nitrate of soda, witli 

 no other fertilizers. 



8 Nitrate of soda. 312 lbs. 



7 Nitrate of soda. 156 lbs. 



2-9-16 Ave. yield check plots 



2449 

 2217 

 1740 



453 

 371 

 260 



709 

 477 



193 

 111 



Using dry matter and protein both as guides the lighter applica- 

 tion of nitrogen increased yields more per unit of nitrogen api^lied 

 than the heavier application. The 25 pound application increased 

 yields 477 pounds of dry matter and 111 pounds of protein while the 

 second increment of 25 pounds in the 50 pound amount returned but 

 232 pounds of dry matter and 82 pounds of protein. 



Yields for these treatments in the Livingston pasture (Table 7) 

 follow the same general trend, the lighter application giving slightly 

 better returns per tmit of nitrogen applied, the actual figures being 

 402 pounds dry matter and 100 pounds of protein and 267 pounds dry 

 matter and 81 pounds protein. res])ectively. for the light and heavy 

 applications. 



2 Xitrate of soda, 312 lbs. 



7 Nitrate of soda. 156 lbs. 



1-8-14 Ave. yield check plots 

 -19-27 



2.\V) 

 2072 

 107U 



4.V 

 256 



402 



ISI 

 100 



Tile feeding value ol llie Inrage ])r(i(luced with nitrogen alone has 

 been somewhat better on the Seavey than on the Livingston pasture. 

 The sward on the Seavey nitrogen plots is composed mainly of Ken- 

 tucky bluegrass while on the Livingston pasture sedges and other 

 weeds appear which are less palatable than bluegrass. For this rea- 

 son the Livingston ])lots under nitrogen treatment have not been so 

 closely grazed as those of Seavey. Unfortunately, (^ur method of 

 clipi)ing caged ]ilots to determine yields does not permit any separa- 

 tion of desirable and tuulesirablc s])ecies and for this reason Living- 

 ston nitrogen-yield increases are ])rol)ably higher than they should 

 be although in the correct relative proportion. 



