172' 



EXPERIMENTAL FARMS 



7-8 EDWARD Vli., A. 1908 



looked at the time of analysis, but upon which it is intended to obtain data on some 

 future occasion. It may further be supposed that the digestibility of the immature 

 straw will be somewhat higher than that from the fully ripened grain. 



Certain agricultural authorities have stated that wheat-chaff contains a higher 

 percentage of crude protein than wheat straw. Our data do not confirm this state- 

 ment. The principal points of difference betvceen the cliaff and the straw as brought 

 out by the present analyses are that the chaff contains less fat and less fibre, but con- 

 siderably more ash than the straw. The higher percentage of ash in both samples of 

 chaff is worthy of note, especially in view^ of the fact that they were carefully freed 

 from foreign matter. 



As to the comparative feeding value of the straw and chaff from the same crop, 

 the writer is of the opinion that while the former is slightly richer in protein and fat, 

 the latter by reason of its lower fibre and the fact that it is more readily eaten by stock 

 is, practically, the more valuable fodder. 



THE EELATIVE VALUE OE EOOTS. 



The past season marks the seventh of this investigation. The value of the work 

 will be obvious on consultation of the data^ which show that very large differences in 

 dry matter and sugar may exist between varieties in the sam.e class of roots, grown 

 under the same climatic and cultural conditions. It, therefore, behooves the farmer 

 when considering the yields per acre with a view to selection of the variety for sow- 

 ing, that he should also consult the analytical data in this and past reports of the 

 Chemical Division. The larger the percentages of dry matter and sugar the higher 

 the feeding value of the root. 



Incidentally also the results are of interest in furnishing information respecting 

 the effect of seasonal conditions on the composition of the root, though in this matter 

 the figures must not be too closely interpreted. It is impossible to say that the strain 

 or parentage of seed sold under the same name remains the same for a number of 

 j^ears — and the breed factor has considerable determinative value, as will be noted 

 further on in the present report. 



Mangels. — In the subjoined table we present the results from the analysis of 16 

 varieties of mangels. The varieties are named in the order of their dry matter. 

 Between the first and the last there is a difference of 5-53 per cent dry matter (practi- 

 cally 40 per cent of the total dry matter), and of 4-67 per cent sugar (practically 67 

 per cent of the total sugar). These are significant figures when we remember that all 

 the varieties were grown on practically the same soil and that necessarily the condi- 

 tions of rainfall, temperature, (&c., were the same for all. 



Analysis or Mangels, C.E.F., Ottawa, Ont., 1906. 



i 



Variety. 



Watev. 



Half Long Sugar Rosy 



Yellow Tnteniiediate 



Gate Post 



Giant Yellow Globe 



Selected Muinuioth Long Ts.e.'i . . 

 Piize Mammoth Long Kid , . . 



Giant Sugar 



Selected Yellow (Tlobe 



Half Long Sugar Wliite. . . . . 

 Mammoth Yellow Intermediate. 



Mammoth Long Red ... 



Giant Yellow Intermediate ... . 

 Triumph Yellow Globe ... ... 



Leviathan Long Red 



Prize Winner Yellow Globe 



Lion Yellow Intermediate . . . 



80- 

 87- 

 87- 

 87- 

 87- 

 87- 

 88- 

 88- 

 88- 

 80 

 SO- 

 SO- 

 80- 

 90- 

 92- 



.c. 

 48 

 84 

 10 

 27 

 34 

 4.:^ 

 50 

 15 

 24 

 5(> 

 03 

 11 

 21 

 26 

 22 

 01 



Dry 



Matter. 



Sugar 



in 

 Juice. 



p.c. 



13-52 



13115 



12-90 



12-78 



12 -(10 



12-52 



12-41 



11-85 



11-70 



11 



10 



44 

 07 



10-80 



10-70 



10-74 



9-78 



7-99 



p.c. 

 6-89 

 7-53 

 6-50 



6 45 

 5-20 



7 35 

 7-52 

 5-50 

 6-28 

 6-10 

 6-57 

 5 53 



4-93 

 5-71 

 2 -22 



Average 



Weight 



of 



One Root. 



Lbs. 

 1 



2 



o 



1 



2 

 3 



2 

 1 

 2 



2 

 3 

 2 

 2 

 2 

 2 

 2 



ozs. 



14 



10 



2 



8 



4 



1 

 11 

 14 

 10 



4 



3 

 io 



1 



13 

 4 

 2 



