REPORT OF THE CHEMIST 



SESSIONAL PAPER No. 16 



Analysis of Eoots, Central Experimental Farm, Ottawa, 1901. 



161 



u 



S 



a 



1 



2 



3 



4 



5 



6 



7 



8 



9 



10 



11 



12 



13 



14 



15 



16 



17 



18 



Variety. 



Water. 



Gate Post Mangel 



Golden Fleshed Tankard Mangel 



Giant Yellow Globe Mangel 



Short White Improved Carrot 



Intermediate Short White Carrot 



Danish Improved Sugar Beet, ordinary culture 



n ii H (another sample). 



ii ii special culture 



ii h ii (another sample). 



Half Sugar Rosy Mangel (Vilmorin) 



Half Sugar White Mangel (Vilmorin) 



Vilmorin's Improved Sugar Beet 



Danish Red Top Sugar Beet 



Danish Improved i 



Red Top Sugar ■■ 



Royal Giant ■■ 



Klein Wanzleben ■• , 



Improved Imperial ■■ 



90 50 

 90 37 

 90 90 

 89-78 

 90 51 

 8147 

 83-16 

 80 61 

 8150 



Dry 



Matter. 



941 



9 63 



9 10 



10-22 



949 



18-53 



16 84 



19 39 



18 50 



Sugar 



in 

 Juice. 



4-15 



502 



480 



463 



4 40 



11-87 



11-49 



1128 



12 60 



7 '38 



647 



1-1-08 



10-54 



15 47 



8-89 



7-88 



14 91 



980 



Average 

 Weight of 

 one Root. 



Lbs. Oz. 



2 

 2 

 3 

 1 

 2 

 2 

 3 

 1 

 1 

 2 

 2 

 1 

 1 

 1 

 1 

 1 

 1 

 2 



9 



7 



3 



9 



3 



1 



6 



11 



7 



4 



5 



10 



12 



9 



15 



15 



6 







Mangels. 



It will be evident on comparing the present results with those recorded last year 

 that the composition of any particular variety is by no means constant. The factors 

 that control this susceptibility to change are possibly three : the seed, the soil, and the 

 season. The size of the root, however, has also been shown to be a matter of import- 

 ance^ — the larger roots being usually found to contain somewhat the less dry matter, 

 and, therefore, compared weight for weight with smaller roots of the same variety, to 

 be of less feeding value. As the roots this year selected for analysis were slightly 

 6maller than those of last season, this cause cannot be advanced to explain the lower 

 percentages of dry matter which is observable in many of the examples. 



The results of the three varieties of mangels — Gate Post, Golden Fleshed Tankard, 

 and Giant Yellow Globe — gave an average last year of 9 -86 per cent dry matter, and 

 A -52 per cent of sugar in juice; this season we obtained 9 •0-4 per cent and 4 "65 per cent 

 respectively, for these constituents. Taking the average data of a class of roots, there- 

 fore, the variations are not large, though there may be considerable differences between 

 the roots of any one variety, from year to year. 



Sugar Beets. 



The ' Danish Improved ' was the sugar beet grown both seasons under ' ordinary ' 

 and 'special' culture in the field to ascertain the effect of earthing upon the relative 

 feeding value. Our results for the dry matter and sugar are : — 



Ordinary culture. 

 Special culture. . . 



1900. 



Dry Matter. 



20 35 

 2149 



Sugar 

 in Juice. 



16 43 

 16 98 



1901. 



Dry Matter. 



17 68 

 18-54 



Sugar 

 in Juice. 



1268 



12 94 



16—11 



