DIVISION OF CHEMISTRY 



M1 



SESSIONAL PAPER No. 16 



It is held by many that size is an infallible guide to quality, the heavier the root 

 the more nutritious it is — that is, the higher the percentage of dry matter. This 

 may be true when comparing individuals of the same variety, but our results do not 

 bear out that contention when comparing varieties. 



CARROTS. 



The more important varieties commonly grown are included in those now reported 

 on. The results generally are very good, two of the six varieties examined contain- 

 ing more than 11 per cent of dry matter, indicating that seasonal conditions were 

 favourable to this crop. Mammoth White Intermediate and White Belgian, as in 

 1910, contain least dry matter though quite up to the average in sugar-content. 

 Between the first and the last of the series the difference in dry matter is somewhat 

 less than 2 per cent, but in sugar-content the greatest difference is 1 per cent. 



Analysis of Carrots, Central Experimental Farm, Ottawa, Ont., 1912. 



Variety. 



Water. 



Giant White Vosges 



Half Long Chantenay 



Chantenay 



Ontario Champion. 



Mammoth White Intermediate 

 White Belgian 



p.c. 



88-55 

 8S-00 

 8913 

 90 00 

 90 33 

 90 37 



Dry 



Matter. 



p.c. 



11 

 11 

 10 

 10 

 9 

 9 



■45 

 •40 

 ■87 

 00 

 •67 

 •63 



sugar 



in 

 Juice. 



p.c. 



•83 

 •73 

 •92 

 •92 



•65 



2-22 



Average 

 Weight of 

 One Kood. 



Lb. 



Oz. 



1 

 15 



1 

 4 

 4 

 5 



The averages for the past seven years are as follows : — 



Carrots. — Average Composition, 1905-1912. 



Year. 



1905 



1906 ... 



1907 



1908 



1909 



1910 



1912 



Average for 7 years . 



Number of 

 Varieties 

 Analyzed. 



11 

 10 

 6 

 6 

 6 

 5 

 6 



Average Weight 

 of One Root. 



Lb. 



Oz. 



3 



2 

 1 

 3 

 

 9 

 1 



Yield per Acre . 



Tons Lb. 



25 

 19 

 24 

 22 

 17 

 34 

 18 



1,510 

 1,01)5 

 1,517 



133 

 1,680 

 1,640 



545 



Sugar. 



p.c. 



•52 

 ■36 



•02 

 •34 

 •30 

 •23 

 •54 

 •90 



It is interesting to note from these yearly averages that this crop, from season 

 to season, varies but very slightly as to composition — and this is particularly true of 

 the dry matter-content. We do not find those fluctuations due to seasonal conditions 

 observable in other farm roots. 



16—16 



