MANURES FOR BARLEY. 



231 



EXPERIMENTS ON THE GROWTH OF BARLEY, TEAR AFTER YEAR, ON THS 

 SAME LAND, WITHOUT MANURE, AND WITH DIFFERENT DESCRIPTIONS 



OF MANURE. Hoos FIELD, ROTHAMSTED, ENGLAND. 

 TABLE i. SHOWING, taken together with the foot-notes, THE DESCRIPTION AND 



QUANTITIES OF TH3 MANURES APPLIED PER ACRE ON EACH PLOT, IX EACH 

 YEAR OF THE TWENTY, 1852-1871 INCLUSIVE. 



[N. B. This table has reference to all the succeeding Tables]. 



Plots. 



MANURES PEB ACRE, PER ANNUM (unlens otherwise stated 

 in the foot-notes] . 



Plots. 



1 O. Unmanured continuously I 1 O. 



2 O. 3% cwts. Superphosphate of Lime * 2 O. 



3 O. 200 Ibs. t Sulphate of Potass, 100 Ibs. t Sulphate Soda, 100 Ibs. | 



Sulphate Magnesia i 3 O- 



4 O. 200 Ibs. t Sulphate Potass. 100 Ibs. t Sulphate Soda, 100 Ibs. 



Sulphate Magnesia, 3>< cwts. Superpho.-puate 4 O. 



1 A. 200 Ibs. Ammonia-salts 1 1 A. 



2 A. 203 Ibs. Ammonia-salts, 3>^ cwts. Superphosphate 2 A. 



3 A. 200 Ibs. Ammonia-salts, 2uO Ibs. t Sulphate Potass, 100 Ibs. t 



Sulphate Soda, 100 Ibs. Sulphate Magnesia 3 A. 



4 A. 200 Ibs. Ammonia salts, 200 Ibs. t Sulphate Potass, 100 Ibs. t 



Sulphate Soda, 100 Ibs. Sulphate Magnesia, 3> cwts. Su- 

 perphosphate 4 A. 



fl A\. 275 Ibs. Nitrate Soda 1 AA." 

 2 AA. 275 Ibs. Nitrate Soda, 3% cwts. Superphosphate 2 AA. I 

 3 AA. 275 Ibs. Nitrate Soda, 200 Ibs. t Sulphate Potass, ICO Ibs. t 

 Sulphate Soda, 100 Ibs. Sulphate Magnesia 3 AA. 

 4 AA. 275 Ibs. Nitrate Soda, 200 Ibs. t Sulphate Potass, 100 Ibs. t 

 Sulphate Soda, 100 Ibs. Sulphate Magnesia, 3> cwts. Su- 

 | perphosphate 4 AA.J 



1 AAS. 275 Ibs. Nitrate Soda, 400 Ibs. IT Silicate Soda 1 AAS.l 



2 AAS. 275 Ibs. Nitrate Soda, 400 Ibs. IT Silicate Soda, 3% cwts. Su- 



perphosphate 2 AAS. 



1 1 3 AAS. 275 Ibs. Nitrate Soda, 40J Ibs. V Silicate Soda, 200 Ibs. t Sul- 

 phate Potass, 100 Ibs. t Sulphate Soda, 100 Ibs. Sulphate 

 I Magnesia 3 AAS. 1 



4 AAS. ;275 Ibs. Nitrate Soda, 400 Ibs. If Silicate Soda, 200 Ibs. t Sul- 



I phate Potass, 100 Ibs. t Sulphate Soda, 100 Ibs. Sulphate 



i Magnesia, 3% cwts. Superphosphate 4 AAS.. 



!1 C. llOOO Ibs. Rape-cake -1 C.I 

 2 C. J1000 Ibs. Rape-cake, 3}^ cwts. Superphosphate 2 C. 

 3 c. 1000 Ibs. Rape-cake, 200 Ibs. t Sulphate Potass, 100 Ibs. t Sul- 

 I phate Soda, 100 Ibs. Sulphate Magnesia 3 C. 

 4 C. 1000 Ibs. Rape-cake, 200 Ibs. t Sulphate Potass, 100 Ibs. t Sul- 

 phate Soda, 100 Ibs. Sulphate Magnesia, 3> cwts. Super- 

 phosphate 4 C. 



+4.51 N. 2;5 Ibs. Nitrate Soda IN.) 



11 1 2 N. 275 Ibs. Nitrate Soda (550 Ibs. Nitrate for 5 years, 18-53, 4, 5, 6, J-ff 



and 7) 2N.) 



M. 100 Ibs. it Sulphate Sod*, 100 Ibs. Sulphate Magnesia, 3}^ 

 cwts. Superphosphate (.commencing 1855; 1852, 3, and 4, 

 unmanured) M. 



5 O. 200 Ibs. t Sulphate Potass, 3% cwts. Superphosphate (2CO Ibs. 



Ammonia-salts also, for the first year, 1852, only) 5 O. 



5 A. 200 Ibs. t Sulphate Potass, 3> cwts. Superphosphate, 200 Ibs. 



Ammonia-salts 5 A. 



-51 Dnmanured continuously l) fi 



* J2 Ashes i burnt-soil and turf ) 2J 



7 H Tons Farmyard-Manure 7 



NOTSS TO TABLE I. 



"3V cwts. Superphosphate of Lime'" in all cases, made from 200 Ibs. Bone- 

 ash, 150 Ibs. Sulphuric acid sp. gr. 1.7 (and wateri. 



t Sulphate Potass 300 Ibs. per annum for the first 6 years, 1852-7. 



i Sulphate Soda 200 Ibs. per annum for the first 6 years, 1852-7. 



The " Ammonia-salts "in all cases equal parts of Sulphate and Muriate of Am- 

 monia of Commerce. 



II Plots " AA " and " AAS "first 6 years. 1852-7, instead of Nitrate of Soda, 400 

 Ibs. Ammonia-salts per annum ; next 10 years, 1858-67, 200 Ibs. Ammonia-salts per 

 annum ; 1868, and since, 275 Ibs. Nitrate of Soda per annum. 275 Ibs. Nitrate of Soda 

 is reckoned to contain the same amount of Nitrogen as 200 Ibs. " Ammonia-salts. 



If Plots "AAS" the application of Silicates did not commence until 1864; in 

 '61-5-C, and 7, 200 Ibs. Silicate of Soda and 200 Ibs. Silicate of Lime were applied per 

 acre, but in 1868, and since, 400 Ibs. Silicate of Soda, and no Silicate of Lime. These 

 plots comprise, respectively, one half of the original " A A " plots, and, excepting the 

 addition of the Silicates, have been, and are, in other respects, manured in the same 



** 2000 Ibs. Kape-cake per annum for the first 6 years, and 1000 Ibs. only, each year 

 elnce. tt 300 Ibs. Sulphate Potass, and 3vg cwts. Superphosphate of Lime without 

 Nitrate of Soda, the lirst year 1 1852); Nitrate alone each yearBince. tt Sulphate 

 Soda 200 Ibs. per annum Ib55, G, and 7. 



