QUALITY OF BARLEY GROWN AFTER ROOTS. 299 
sample numbered 22 came from the continuously unmanured 
plot; the others had each year a general manure, but from 
23 the potash, from 24 the nitrogen, and from 25 the phos- 
phoric acid was omitted; 26 and 27 received a complete 
artificial manure, but 27 twice as much as 26, 28 received dung 
instead of artificials. 
The continuous omission of any one ingredient of a manure, 
nitrogen, potash, or phosphoric acid, results in a sample 
very poor in starch, the unmanured plot and that without 
phosphoric acid being the worst. The best sample came 
from 27, the plot that had always received a large general 
dressing. The proportion of starch was good and the 
nitrogen low; the proportion of flinty corns was also low. 
In looking over the various series of analyses one or two 
facts of interest are seen; the starch content and the pro- 
portion of mealy grains generally vary together, the relative 
mealiness and flintiness being dependent on starch rather 
than on the nitrogenous compounds. It may be noticed also 
that the fat is generally highest in the samples from the 
unmanured plots, and that the fat and the crude fibre gener- 
ally vary in opposite directions, the crude fibre being lower 
where the fat is higher, and wce versd. Speaking generally, 
the nitrogen and fat are lower, the crude fibre and the ash 
are higher, in the barleys grown after barley than in the 
barleys grown after roots. 
General Conclustons—When barley is grown after roots 
that have been fed on the land a dressing of salt is detri- 
mental to the value of the barley, and sulphate of potash, 
though increasing the starch content of the grain, does not 
give any commercial return. 
A dressing of 3 cwt. of superphosphate per acre is decidedly 
profitable, and can be recommended as producing a slight 
increase in yield and a marked improvement in quality. 
x 1D EAI: 

