74 FORAGE CROPS IN DENMARK 



was sufficiently encouraging to warrant a continuation. A new 

 invitation was issued in August, 1913, the samples to be sown, 

 as before, under cover of a corn crop, and each sample to be 

 sown two years in succession and cultivated for two years, to 

 estimate the yield of hay. Samples of cocksfoot, English 

 ryegrass, timothy, meadow fescue, white and alsike clover, were 

 sown in 1914 and 1915 and harvested in 1915-16 and 1916-17, 

 while field brome grass, kidney vetch, and yellow trefoil were 

 sown in 1915 and 1916 and harvested in 1916 and 1917. The 

 samples were cultivated at seven Experimental Stations, each 

 sample at four stations at least. On each station there were 

 generally ten parallel plots of 24 square yards each. Besides 

 the samples entered by Danish seed growers, some samples from 

 Tystofte and some bought samples were compared in this, the 

 third series. The results are given in a report by E. Lindhard. 1 



Nine Danish strains of cocksfoot were tested from D. L. E., 

 F. D. B., Daehnfeldt, Pajbjerg, Trifolium, Tystofte, and others. 

 The best in regard to yield was again the Olsgaard strain ; the 

 sample was bought from D. L. F. This strain, which was also 

 the best in the two previous series, forms the greater bulk of 

 the exported seed. Several of the other strains ran it very 

 close, yielding only one or two per cent, less hay for the two 

 years. 



English ryegrasses were not tested in the two first series, but 

 during the years 1879 to 1907 samples from Danish growers and 

 from Scotland and Ireland had been compared for yield of hay 

 with the result, that if the yield from Danish strains was taken 

 as 100, that from Scotch and Irish were respectively 90 and 87. 2 

 The yields in 1915 and 1916 bear out this experience in so far as 

 the best strain, the Lundbsek strain, entered by D. L. F., gave 

 averagely for the two years 10 per cent, more hay than the 

 Irish sample, which was bought from Trifolium, which firm had 

 imported it from Ireland. Second was a strain, No. 20, from 

 F. D. B., which yielded 5 per cent, more than the Irish sample. 

 During the last year a Tystofte strain, No. 10, was included, 

 which gave 4J per cent, more hay than the Lundbsek strain, 



1 E. Lindhard, " Fors0g, etc.," III., 1914-1917, Tidsskrift for Planleavl 

 25 vol., 1918, p. 117. 



2 Tidsskriftfor Landbrugcts Planteaii, 17 vol., 1910, p. 200. 



