16 



X. II. KXPERIMEXT ST.\TION 



[Bulletin 320 



T.\BLE 16. — Rainfall records, seasons oj 1938 and 1939 



LIVINGSTON FARM 



IRELAND FARM 



These records show that the 1938 precipitation for the months in 

 question was approximately double that for 1939. 



The average yields of the nitrogen alone, complete fertilizer and 

 check plots for l)i)th pastures are given in Table 17 for these two 

 seasons : 



T.ABLE 17. — Pasture yields, 1938 and 1939, Livingston and Seavey farms 



It is a well-known fact that ])asturt.-s are much more |)ri>(iuctive in 

 wet seasons than in dry ones, and this (hfference in productivity is 

 reflected in Table 17. On the Livingston pasture the difference 

 amounts to about 1300 pounds of dry matter per acre for each 

 treatment, on the average, while on Seave\- the dilTerence varies fnun 

 al)out 800 pounds dry matter per acre on the nitrogen plots to almost 

 1900 pounds on the complete fertilizer plots, with the check plot dif- 

 ferences averaging about 1300 potmds per acre. 



The comparison between nitrogen alone and complete fertilizer 

 on Seavey pasture for the wet season of 1938 is interesting in 

 that this is the only year in the duration of the test when the com- 

 ])lete fertilizers greatly out>'ielded the nitrogen treatments, the dif- 

 ference amoimting to 1028 potmds of rlry matter and 199 pounds of 

 l)rotein per acre. In U)39. however, the dry matter yields were al- 

 most identical, with a difference of but 40 pounds in dry matter 



