Report of Experiments on the Growth of Wheat. 143 
Experiments at Hothamsted on the Growth op Wheat Year after Year 
on the same Land. 
Table XXII. — Annual Average Produce, &c, over the First half, the Second 
half, and the Total periods of the application of different Manures, each Year after 
Year on the same Land. 
Average Annual. 
Duration 
of 
Total Period. 
riot 
First 
half of 
Period. 
Second 
half of 
Period. 
Total 
l'eriod. 
Dressed Corn, per Acre, in Bushels and Pecks. 
3 
10a 
2 
Unmanured, every year 
Ammonia-salts alone, every year .... 
14 tons Farmyard Manure, every year 
1 15 3i 
24 3f 
27 Oi 
16 2J 
23 3f 
37 81 
16 1 
24 If 
32 If 
20 years— 1844-1863. 
19 years— 1845-1863. 
20 years— 1844-1863. 
3 
5 
10a 
2 
Unmanured, every year 
Mixed Mineral Manure alone, every year , 
Ammonia-salts alone, every year .... 
Ammonia-salts and Mixed Mineral Manure, every year 
14 tons Farmyard Mauure, every year 
I 15 ii 
18 3f 
23 1 
35 04 
33 U 
15 2 
18 Of 
22 0 
37. 24. 
37 If 
15 2 
18 If 
22 2| 
36 14 
35 if 
|l2 years— 1852-1S63. 
Weight per Bushel of Dressed Corn 
, in lbs. 
3 
10a 
2 
Ammonia-salts nlone, every year .... 
14 tons Farmyard Manure, every year . . . 
■ 58-3 
58-7 
1 59-8 
57-6 
56-6 
60-3 
57-9 
57*6 
60'0 
20 years— 1844-1863. 
19 years— 1845-1863. 
20 years— 1844-1863. 
3 
5 
10a 
7 
2 
Mixed Mineral Manure alone, every year , , 
Ammonia-salts alone, every year .... 
Ammonia-salts and Mixed Mineral Manure, every year 
14 tons Farmyard Manure, every year 
55-8 
57- 1 
55'it 
: 57-9 
58- 8 
57- 2 
58- 7 
55-8 
58- 9 
59- 8 
56- 5 
57- 9 
55-9 
58- 4 
59- 3 
|l2 years— 1852-1803. 
Total Corn, per Acre, in lbs. 
3 
10a 
2 
Unmamired, every year 
Ammonia-salts alone, every year .... 
14 tons Farmyard Manure, every year 
1018 
1628 
1757 
1035 
1527 
2395 
1026 
1575 
2076 
20 years— 1844-1863. 
19 years— 1845-1863. 
20 years— 1844-1863. 
3 
5 
10a 
7 
2 
Unmamired, every year 
Mixed Mineral Manure alone, ever}' year . 
Ammonia-salts alone, every year .... 
Ammonia-salts and Mixed Mineral Manure, every year 
14 tons Farmyard Manure, every year 
963 
1171 
! 14(13 
; 2195 
1 2102 
965 
1144 
1408 
2356 
2362 
964 
1157 
1435 
2275 
2232 
|l2 years-1852-1863. 
Total Straw (and Chaff), per Acre, 
in lbs. 
3 
10a 
2 
Unmanured, every year ...... 
Ammonia-salts alone, every year .... 
14 tons Farmyard Manure, every year . . 
1693 
2846 
3071 
1693 
2640 
3960 
1693. 
2737 
3515 
20 years— 1844-1 S63. 
19 years— 1845-1863. 
20 years— 1844-1863. 
3 
5 
10a 
7 
2 
Unmanured, every year ...... 
Mixed Mineral Manure alone, every year . . . 
Ammonia-salts alone, every year .... 
Ammonia-salts and Mixed Mineral Manure, every year 
14 tons Farmyard Manure, every year 
1678 
2012 
2693 
4233 
3794 
1645 
1783 
2513 
4190 
3944 
1662 
1898 
2603 
4212 
3869 
|l2 years— 1852-1863 
Total Produce (Corn and Straw), per Acre, in lbs. 
3 
10a 
2 
Unmanured, every year 
Ammonia-salts alone, every year .... 
14 tons Farmyard Manure, every year ' . . 
2711 
4474 
4828 
2728 
4166 
6355 
2719 
4312 
5591 
20 years— 1844-1863. 
19 years— 1845-1863. 
20 years— 1844-1863. 
3 
5 
10a 
7 
2 
Unmanured, every year . . . , . 
Mixed Mineral Manure alone, every year , , 
Ammonia-salts alone, every year .... 
Ammonia-salts and Mixed Mineral Manure, every year 
14 tons Farmyard Manure, every year , . , 
2641 
3183 
4156 
6428 
5896 
2610 
2927 
3521 
6546 
6306 
2626 
3055 
4038 
6487 
6101 
|l2 years— 1352-1863. 
