PEACTICAL CONCLUSIONS 91 



PRACTICAL CONCLUSIONS 



1. The barley crop is far more dependent than wheat upon 

 a supply of manure, and will require manuring when it is 

 grown as a second white- straw crop, except on land in very 

 good condition. After roots which have been wholly or 

 partially fed on the land, or after a clover ley, there is already 

 sufficient, and often too much, nitrogenous matter in the land. 



2. The artificial manure used in the first case should contain 

 a fair amount of nitrogen, as without it both the yield will be 

 low and the berry small. Sulphate of ammonia is a better 

 barley manure than nitrate of soda, giving equal yield and 

 generally superior quality. The quantity used should not be 

 more than 1^ cwt. per acre. Eape cake up to 5 cwt. per acre is 

 also a good source of nitrogen for the barley crop. 



3. Barley is particularly dependent on a free supply of 

 phosphoric acid, 3 cwt. of superphosphate per acre may be 

 profitably used on most soils, especially where the climate is 

 wet. Even with barley after roots superphosphate is valuable, 

 hastening the ripening and making the sample more uniform. 



4. An artificial supply of potash is rarely likely to be 

 wanted, except on dry sands and gravels and in dry seasons. 



( 



REFERENCES 



"On the Growth of Barley by different Manures continuously on the same 



Land ; and on the position of the Crop in Rotation." Jour. Roy. Ag. 



Soc., 18 (1857), 454. Rothamsted Memoirs, Vol. I., No. 11. 

 "Report of Experiments on the Growth of Barley for Twenty Years in 



succession on the same Land." Jour. Roy. Ag. Soc., 34 (1873), 89 and 



275. Rothamsted Memoirs, Vol. III., No. 13. 

 "On the more frequent (irowth of Barley on Heavy Land" Farmers' 



Club, Feb. 1875. Rothamsted Memoirs, Vol. V., No. 1. 

 " Results of Experiments at Rothamsted on the Growth of Barley for more 



than Thirty Years in succession on the same Land. 1 ' Agricultural 



Students' Gazette, New Series, Vol. III., Part 1, 1886. Rothamsted 



Memoirs, Vol. VI., No. 8. 

 " Manurial Conditions affecting the Malting Quality of English Barley," by 



J. M. H. Munro and E. S. Beaven. Jour. Roy. Ag. Soc., 58 (1897), 65. 

 " Various Conditions affecting the Malting Quality of Barley," by J. M. H. 



Munro and E. S. Beaven. Jour. Roy. Ag. Soc., 61 (1900), 185. 



