14 



UNIV. OF X. H. AGR. EXPERIMENT STATION 

 Table II — Results of ensilage corn tests 



[Bulletin 221 



sunflower silage from a milk producing standpoint, and the cattle seem to 

 relish it just as much as the straight corn silage. 



Alfalfa Plots {Hatch Fund) 



From the five acres seeded to Grimm alfalfa in June, 1924, 15.6 tons 

 of hay were cut in 1925. The first cutting was made June 15 and yielded 

 8.9 tons; the second was Juh'' 30 and jdelded 4.6 tons; the third was 

 September 5 and yielded 2.1 tons. The half of the field which had been 

 inoculated with soil had about 90 per cent of a perfect stand, while the 

 half on which the seed only was inoculated had about a 60 per cent stand. 

 This half of the field was pulverized with a disk harrow, inoculated with 

 soil and reseeded August 5, 1925. 



An adjoining five-acre tract which had been in corn for two seasons was 

 seeded June 3, 1925, with oats as a nurse crop. This piece was limed at 

 the rate of 15 pounds per acre. The oats were cut for hay July 24. The 

 alfalfa was not cut afterwards. The work was in charge of F. W. Taylor. 



Effect of Climate on Productiveness {Hatch Fund) 



In southern New Hampshire potatoes usually degenerate rapidly, 

 owing to the development of leaf-roll, and it is generally considered 

 undesirable to grow the same seed two years in succession. During the 

 year, in continuation of previous work, 0. Butler studied at East King- 

 ston, N. H., the effect of maturity of Green Mountain seed and Irish 

 Cobbler seed on the development of leaf-roll and mosaic and on yield as 

 compared with the same stock obtained from the point of origin. The 

 data in Table III show that the yield has been maintained and even 

 improved by early harvesting, and that the per cent and relative distribu- 

 tion of leaf-roll and mosaic have been strikingly affected. In the case 

 of the Green Mountain the 90-day stock obtained from strain H in 1922 

 has remained free from mosaic as has the original stock; but the 90-day 

 stock obtained from strains H and E in 1923 shows 6.9 and 11.64 

 per cent mosaic respectively, while the older stocks are free from this 

 malady. Leaf-roll increased with the age of the stock very definitely 

 in the case of the Irish Cobbler, less obviously so in the case of the Green 

 Mountain. 



