84 



EXPERIMENTS UPON BARLEY 



kind of manure will improve the quality of the barley. The 

 grain from the plot receiving farmyard manure every year, 

 despite the high weight per bushel, and the bold berry indicated 



Table XXXIV. — Experiments on Barley, Hoos Field. PartieuJars of 

 Quality. Averages over 14 years (1889-1902). 



* Based on average samples of 24 years (1S72-1S95). See " Manurial Conditions afl'ectiug the Malting 

 Quality of English Barley," by Munro & Beaven, J. R. Ag. Soc, 1S97. 



by the high weight of 100 grains, has yet a value considerably 

 below the average. Again, the use of nitrogen alone on Plot 

 1 A or 1 N gives the lowest weight per bushel and the lowest 

 valuation of the whole series. It has already been seen that 

 the yield of the barley crop is very dependent on the supply of 

 minerals, especially of phosphoric acid, and the table now 

 under consideration shows that the same effect extends to the 

 quality of the crop. The use of superphosphate on Plots 2 as 

 compared with Plots 1 gives a better proportion of grain to 

 straw, a higher weight per bushel, and a greatly increased 

 value ; similarly, the omission of superjjhosphate on Plots 3 as 



