32 



MASS. EXPERIMENT STATION BULLETIN 281 



Table 1L — Yield of Clipping.s from Experiment B, 1930. 

 Average of Series I-VI 



Nole- 



*Series I-IV, only. 

 -By mistake Plot 10 of Serie; 

 11 in 1930. 



V and VI received fertilizer which should have gone to Plot 



Table 12. — Percentage of Clover in Series I, Experiment B, 1929 and 1930 



Plot 



Fertilizer treatment 



1930 



p 



K 



Check 



2P 



2K 



Check 



Gypsum.. 



P, K 



2P, 2K:.... 



Check 



P, K, N.. 



Table 13. — Percentage of Certain Xi'trient.s in Clippings from 

 Experiment B, 1930 

 (Per cent of dr.v weight) 



-Determinations of phosphoric acid and calcium oxide were made in the Fertilizi 

 Laboratory, under the direction of H. D. Haskins. 



>r Control 



