8 MASS. EXPERIMENT STATION BULLETIN 305 



legume should not be permanently substituted as a forage crop for clovers, 

 alfalfa, or soybeans. 



Soybeans. Forty-nine new soybeans, including nine edible varieties, were 

 observed in 8-foot rows, to determine their adaptability to New England condi- 

 tions. Two of the edible varieties and seven of the forage varieties did not 

 reach maturity. 



Sweet Clover. Plots of hulled and unhulled sweet clover were seeded at inter- 

 vals from December 1931 to May 1932, and their yields compared after cutting 

 in 1933. The best yield (2.19 tons) was obtained from the February 1 seeding 

 of unhulled. This is in general agreement with the results of the previous ex- 

 periment. 



Crimson Clover. The highest yields of crimson clover (.96 tons when grown 

 with oats as a companion crop, 1.19 tons when grown alone) were obtained from 

 plots seeded in the middle of May rather than later. 



Lespedeza. Two strains of early Korean Lespedeza were seeded early in May, 

 and the seed harvested in October. Strain 65280 yielded 72 pounds of seed per 

 acre: strain 59379, 101 pounds per acre. A rather dense growth was observed 

 on the volunteer reseeding from the shattered seed of the previous year's crop. 



These two strains were also seeded on an upland pasture early in the spring 

 before frost had come out of the ground. Seed were not worked into the soil 

 by artificial means. The fields used had been previously used for a top-dressing 

 fertilizer and lime experiment. There was a fair stand of lespedeza plants early 

 in the spring before grazing had begun, but at the end of the season less than 1 

 per cent of lespedeza plants could be found in the sod. They were very small, 

 but in most cases bore seed. Little or no difference in stand of lespedeza could 

 be attributed to the differential fertilizer and lime treatments. 



Top-Dressing Grasslands with Fertilizers. 



son, and M. E. Snell.) 



(A. B. Beaumont, R. W. Donald- 



Fertilizer Ratios. Part I of this experiment was terminated at the close of the 

 1932 season, and the field plowed and reseeded in the summer of 1933. The gen- 

 eral plan of the previous experiment was followed except that enough phosphoric 

 acid (in the form of 16 per cent superphosphate) to last for about 5 years was 

 applied and harrowed in prior to seeding. Nitrogen and potash will be applied 

 annually as top-dressing. Part II was started in 1932, and differs from Part I 

 only in that wider ratios were used. The yields are summarized below: 



Mean Yields of Cured Hay 



Part I, 5 years (1928-1932) Part II, 2 years (1932-1933) 



