EXPEKIMKNTS ON THE GROWTH OF BARLEY YEAR AFTER YEAR ON THE SAME LAND, WITHOUT JIANURE, AND WITH DIFFERENT DESCRIPTIONS OF flLiJ^URE. HOOS FIELD, ^OTHAMSTED. 
Taui.r XXIV.— Average Produce, nnd Increase by Mtimiro, per Acre, per Annum, over Twenty Years, 1852-1871. 
[Tlie Increase by Manure is in all cases given over the unmnniircd Produce Cmenn of Plots 1 0 nnd !'•-]); also, wlien Mineml nnd Nitrogenous Manures aro used together, over the proiluce by the corrcsiwnding Mineral Manure aione (i,c Plots 2 A, li A A. 2 A AS. 2 C. nvcr 2 0; .'i A, 3|AA, a AAS, :j C, n 
(') ".!} cwU. Supcqiliosphute of Lime"— in i 
;nses, muJe from 20li lbs. Bonc-ash, ISOlbs.Sulphui 
ucid sp. gr. 1*7 (and water). 
(*) Plots " A A " and ■' AAS "—first 6 years. 18.')2-7, 
iiisleud of Nitrate of Soilu, 41)0 \h-. Aiiiiiiiii,ir,-'i,l(-s per 
1 jcnr*. ie58-(.:, n- \,.:n:,,nvA. 
»alli pcrannum; liffiS and tiin ' > - "t 
Soda per aanum. 276 llii. Nitr.K' - . i < < .1 
* I the f 
" Ammouia-snltf ." 
. . 300 lbs. Sulphate Potast, and 3} cwts. Sup 
tilioKphate of Lime, nitliout Nitrat*; of Soda, the n 
)L-at (18^2); Nitrule alone tach year siace. 
C) Sulphate Soda— 200 Ihe. per annum 1855, 
I AA. 
.«)2 AA. 
^>)S A A. 
4 AA. 
I AAS. 
,.,.2 AAS. 
^ ^13 AAS. 
4 AAS. 
Unmnnared continuously 
3) owts. Superphosphate of Lime 
200 lbs. (") Sulphate Potass, 100 lbs. 
aOO lbs. O Sulphate Potass, IIW Ibi. 
200 Ihf. Ammonia-salts (') 
200 Ihs, Ammonia-salts, 
SUO lbs. Ammonia-salts, 2i 
SOO lbs. Ammonia-salts, 
1, 3) cwis. Superphosphate 
275 lbs. Nitrate Soda 
275 lbs. Nitrate Soda, 3i cwts, Superphosphate . 
275 Iba. Nitrate Soda, 2U0 lbs. (') Sulphate Potass. 100 lbs. (") Sulphate Soda, 100 lbs! Sulphate Magnesia . 
275 lbs. Nitrate Soda. 200 lbs. (') Sulpluilc Potass, 100 lbs. (') Sulphate Soda, 100 lbs.| Sulphate Magnesia, ,1} cwts. Superpliosphnte 
275 lbs. Nitrate Soda, 400 lbs. Silicate Soda (") 
276 lbs. Nitrate Soda, 400 lbs. Silicate Soda ('). 3i cwts. Superphosphate 
275 lbs. Nitrate Soda, 400 lbs. Silicate Soda ('), 200 lbs. (') Sulphate Potass, 100 lbs. (*) Sulphate Soda, 100 lbs. Sulphate Magnesia 
275 Ibi. Nitrate Soda, 400 lbs. Silicate Soda {'}, 2oO lbs. (') Sulphate Potass. 100 lbs. (>) Sulphate Soda, 100 lbs. Sulphate Magnesip, 3i cwts. Superphosphate 
1000 lbs. llape-cake 
1000 Ills. Itaiie-cake, 3j cwts. Siiperphosidmie 
1000 lbs. liape-cake, 200 lbs. {') Sulphii 
1000 lbs. ftapc-cake. 200 lbs. (•) Sulpha 
e for 5 years, 1853, 4. r>, 6, and 7) . 
100 lbs. (*) Sulphate Soda, 100 lbs. Sulphate Mci; 
200 lbs. C) Sulphate Potass, 3} cwts. Superpliov^ 
200 lbs. Sulphate Potass, 3} cwts. Superplio-i 
Hiperphosphate (commencing I66S ; 1852, 3, and ' 
iiiuiouia-salts also, fpr the first year, 1852, oolf) 
Dressnd Oinx. 
I WclBtit 
corTHpondlog 
Muiui 
I Total Stiuw (ako Ciurr). 
1720 
ISOl 
1896 
1980 
1477 
1307 
1510 
ToTAt Pboddce. 
2403 
3816 
3242 
4271 
3302 
9S85 
3460 
265 5 
3286 
2223 
32S1 
3095 
2711 
3249 
2913 
368G 
294U 
