REPORT OF THE CHEMIST 



SESSIONAL PAPER No. 16 



Analysis of Mangels^ C.E.F., Ottawa, Ont., 1905. 



145 



The varieties have been arranged in this table in the order of their ' dry matter ' 

 and sugar, beginning with the highest, and it will be noticed that between the first and 

 last of the series vast differences occur. We do not think that the value of roots as 

 part of the ration depends entirely on the percentages of dry matter and its sugar 

 content, but we have no hesitation in saying that of two roots, the one containing 

 12 "82 per cent dry matter with a sugar content of 6 '95 per cent, the other with but 

 7 '52 per cent dry matter and 2 "14 per cent sugar, the former must be much the more 

 valuable feed. This important matter has been called attention to in former reports 

 and is again emphasized that farmers in choosing their varieties of mangels may con- 

 sider not only yield per acre, but also the composition of the roots. It is not at all 

 probable that the same order as here given will be preserved for any two successive 

 seasons, but the data presented bear an added importance when it is remembered that 

 all these mangels were grown under the same climatic and cultural conditions. The 

 * breed ' factor has been investigated for a number of years past by us, using two 

 varieties of mangels (see the following chapter) and the results clearly show that de- 

 spite changes due to season, &c., each variety has held its own relative position for six 

 seasons. 



Turnips. — The differences in composition are not so great as with mangels, and 

 this fact serves to bring the averages of the dry matter of these two classes of field 

 roots very close together. In sugar content, however, the turnip is distinctly inferior 

 to mangels. This season, as with all classes of roots grown here, the percentage of 

 sugar is below the average. 



16—10 



