50 



RESULTS WITH WHEAT 



and Gilbert's figures the percentage of albuminoids in the 

 wheat grain produced by various manures. The results are 

 shown in the following table. 



TABLE XII. 



PERCENTAGE OF ALBUMINOIDS IN WHEAT GRAIN VARIOUSLY 



MANURED AT RoTHAMSTED. 

 AVERAGE OF TWENTY YEARS, 1852-71. 



It thus appears that where ammonia has been employed as 

 manure the percentage of albuminoids (and probably of gluten) 

 in the grain is slightly increased. 



The figures relating to the nitrogenous matter in the straw 

 show no increase of nitrogen in the straw of plot 7, but where 

 ash constituents are deficient, and the transference of material 

 from the straw to the grain is therefore hindered, as in the case 

 of the crop on plots n and 10, the nitrogenous matter left in 

 the straw at harvest is somewhat increased. 



AVERAGE PERCENTAGES OF NITROGENOUS MATTER (N. x 6*25) 

 IN DRY STRAW. 



Plot. 



3 

 5 



7 

 ii 



10 



2 



Nitrogenous matter. 

 Per cent. 



3-16 



3-22 

 3-09 

 3'59 

 3'53 

 2-91 



6. Practical Remarks. The wheat crop is one especially 

 suited for treatment with ammoniacal manures. The luxur- 

 iance of the crop depends very greatly upon the supply of 



