324 Report of Experiments on the Growth of Barley, 
Table XLI. — Effects of the Unexhausted Residue of Nitrogen applied to Barley as 
Nitrate of Soda. 
Years. 
Average, 
5 years, 
1853-57 
1858 
1859 
1860 
18&1 
18G2 
1863 
1864 
1865 
1866 
1867 
1868 
1869 
1870 
1871 
Total.. 
Average 
PRODUCE PER ACRE. 
ToT,vL Corn ik Bushels op 52 lbs. 
Plot 1 N. 
275 lbs. 
Nitrate 
Soda, 
19 Years, 
1853-'?1. 
Bushels. 
45^ 
«i- 
261 
291 
42| 
39^ 
551 
451 
40| 
362 
351 
27i 
391 
37i 
47J 
5453 
Plot 2 N. 
550 lbs. 
Nitrate 
Soda, 
5 Years, 
1853-'67 ; 
275 lbs., 
14 Years, 
1858- 71. 
Bushels. 
51i 
47i 
291 
32| 
45J 
42 
58 
52J 
42i 
43J 
38^ 
2Ti 
42| 
433 
501 
596J 
39 
425 
2 N, 
over (or 
under — ) 
IN. 
Bushels. 
5^ 
6i 
2i 
3| 
2i 
2^ 
2f 
6i 
6f 
2f 
oi 
3 
6 
3J 
513 
31 
Stkaw (and Chaff). 
Plot 1 N. 
275 lbs. 
Nitrate 
Soda, 
19 Years, 
1853-'71. 
Cwts. 
25| 
20J 
18| 
16f 
27i 
24i 
30| 
24J 
18i 
21^ 
21J 
181 
24 
13i 
291 
307J 
22 
Plot 2 N. 
550 lbs. 
Nitrate 
Soda, 
5 Years, 
1853-57 ; 
275 lbs., 
14 Years, 
1858- 71. 
2N, 
over (or 
under — ) 
1 N. 
Cwts. 
31i 
23| 
2U 
18t 
291 
24f 
295 
27i 
21| 
235 
21f 
17^ 
27i 
19^ 
3U 
338 
24J 
Cwts. 
6 
3i 
2i 
1? 
2i 
i 
_3 
8 
3 
5 
5 
-li 
31 
51 
2.1 
301 
Total Produce (Corn and Straw 
Plot 1 N. 
275 lbs. 
Nitrate 
Soda, 
19 Years, 
1853-71. 
lbs. 
5,226 
4,399 
3,500 
3,416 
5,260 
4,793 
6,265 
5,065 
4,174 
4,275 
4,234 
3,530 
4,759 
3,456 
5,726 
Plot 2 N. 
650 lbs. 
Nitrate 
Soda, 
5 Years, 
1853-57 ; 
275 lbs., 
14 Years, 
1858- 71. 
lbs. 
6,198 
5,125 
3,905 
3,793 
5,665 
4,959 
6,366 
5,820 
4,629 
4,941 
4,438 
3,366 
5,313 
4,413 
6,175 
62,852 68,908 
4,489 4,922 
2N, 
over (or 
under -) 
IN. 
lbs. 
972 
726 
405 
377 
405 
166 
101 
755 
455 
666 
204 
-164 
554 
957 
449 
6,056 
433 
the latter crop, since we are now enabled to give them for 
8 years longer than at the time of the last Report. 
Plots 5 and 16, referred to in Table XLII., were both variously 
manured during the first 8 years, 1844-1851. From 1852 to 
the present time, Plot 5 has every year received a mixed 
mineral manure containing superphosphate of lime, and sulphates 
of potass, soda, and magnesia ; whilst Plot 16 received annually, 
for the first 13 years of the period, namely 1852-1864 inclusive, 
the same mixed mineral manure as Plot 5, but in addition the 
very excessive amount of 800 lbs. of ammonia-salts per acre per 
annum. For the crop of 1865, and since, however. Plot 16 has 
been left unmanured. The 800 lbs. of ammonia-salts would 
supply annually to the soil about 200 lbs. of ammonia = 164 lbs. 
of nitrogen; whilst, as will be seen further on, scarcely three- 
tenths as much was recovered in the average annual increase of 
wheat (corn and straw) during the 13 years of the application ; 
