16 



N. H. AGR. EXPERIMENT STATION. 



[Bulletin 203 



Two hundred roots were divided lengthwise into three sections. The 

 top and the bottom sections w6re frozen at different times. The data ob- 

 tained shows that there is a strong corx-elation between the amount of in- 

 jur}^ to the top section, and to the bottom section. The relative hardiness 

 of individual roots must, therefore, be due to some internal difference. A 

 sample from the middle sections of roots which were not killed and another 

 from roots which were entirely killed were preserved for chemical analysis. 

 Other sections were preserved for the preparation of microscope sUdes. The 

 analysis and sectioning are not yet done. 



. A considerable amount of material for the continuance of this work is 

 being grown in the nurserj^, and the investigation is to be continued this 

 season. 



RESULTS OF WORK IN HATCH PROJECTS. 



Improvement of Timotht. 



The .work in timothy selection, which is being conducted with a view to 

 securing a superior strain particularly suited to New Hampshire, reached a 

 point last year where it was possible to send out selected seed for trial in 

 other portions of the state. A careful process of selection has been craried 

 on by F. W. Taylor (Agronomy) since 1912 along this line. From the 3000 

 plants set out in 1920, one hundred of the most promising were selected last 

 year. A further selection and culling of these 100 to about 20 wiU be made 

 next season, and from these seed will be saved for setting out another in- 

 dividual test plot of 3000 plants in the fall. 



Of the selected seed last j^ear six 2-Ib. lots were sent to county agents to 

 be tried out by farmers. Three ounces of the seed were also sent to the agri- 

 cultural instructor in each of the fifteen rural high schools of the state to 

 be grown in school garden rows in comparison with other strains. 

 Variety Tests of Ensilage Corn. 



Tests with ensilage com were again carried on last year by Mr. Taylor 

 and M. G. Eastman (Agronomy). Three rows 40 rods long of each of 16 

 varieties were planted May 21. The ground was well maniired and the usual 

 methods of cultivation were practiced. The hot dry weather of late sum- 

 mer enabled the corn to mature well. It was cut into the silo September 17, 

 and samples of each variety were bagged for subsequent analyses of the 

 resulting sUage. 



The names and yields per acre of the several varieties were as follows: 



*These varieties were fully matured at cutting time, 

 and Cuban Giant were the latest and had very few ears. 



The Eureka 



