80 RESULTS WITH OATS 



Farmyard manure was only used on some of the farms 

 during these experiments. The return from 10 tons of farm- 

 yard manure was generally somewhat less than that from 

 cwt. of sulphate of ammonia, with superphosphate and 

 kainite. 



3. Influence of Ammonia on Quality. The higher 

 weight per bushel obtained in the Rothamsted experiments, 

 as a result of a complete manuring with ammonia salts, super- 

 phosphate and alkalies, has been already referred to ; the 

 same fact was observed in the Glasgow experiments. The 

 weight per bushel was somewhat higher than when nitrate of 

 soda was employed. 



Determinations of nitrogen made at Rothamsted in oat 

 corn and straw, grown with and without ammonia salts 

 (Watts' Dictionary of Chemistry, Second Supplement, Oats, 

 p. 867), enable us to calculate the average percentage of 

 albuminoids which they contained. Osborne's factor has been 

 used in calculating the albuminoids of the grain. 



ALBUMINOIDS IN 100 DRY MATTER. 



Corn Straw 



Cinereal manures ... ... ... in 2-9 



Cinereals and Ammonia salts 400 Ibs. 12-3 3-0 



We have here, as in the experiments with other cereal 

 crops already quoted, a distinct increase in the percentage of 

 albuminoids in the grain resulting from the use of ammonia 

 salts as manure. 



4. Practical Remarks. As the oat plant is capable of 

 ripening its grain in a cool, wet summer, the crop is much 

 cultivated in Scotland, and in the North of England. In such 

 localities it may take the place in the rotation which is occupied 

 by wheat in a southern climate, and it is frequently grown after 

 grass seeds and clover. At other times, and frequently in 

 the south, the oat crop may take the place usually allotted to 

 barley, and may folio w roots, or wheat. Much that has been 

 already said under the heads of wheat and barley might 

 therefore be repeated here. The manuring for the oat crop 

 must clearly be regulated in each case by the condition of the 

 land, determined by its previous history, cropping and man- 



