'2S E.vperiiwjnts wit/t different Top-Dressings upon Wheat. 
Tabu-; II.— 18G1. 
Siioa-inij the Produce in Straw, Cavings, and Chaff, of Experimental Flot.^, 
calculated per Acre. 
Plot. 
I. 
II. 
III. 
IV. 
V. 
VI. 
VII. 
Straw. 
Cavings. 
Chaff. 
Total. 
toiiscwt. qrs. Ibs. cwt. qrs. lbs. 
0 
(2J C»l. Ul I'fl UVIUU I 1 1 1 o< 
■guano .. ../ ' ' ^ 
U cwt. of Mheat-l j „ 0 4 
\ manure .. .. f 
1^ cwt. of nitrati; ofj 
soda 
14 2 0 
1 1 
1 I 
1 2 
1 2 
cwt. qrs. lbs. tonscwt.qrs. lbs. 
2 22 ! 1 5 1 18 
0 2 
1 3 
Unraanured .. ..' | 0 IG 0 20 
1 1 J cwt. of nitrate ofj 
'soda and 3 cwt.j 1 3 0 12 
of salt . . . . ) 
3 cwt. of salt .. j 0 18 0 20 1 o 20 
[2 cwt. of sulphate of 
ammonia 
3 
24 ' 3 
1 IG 
1 10 
0 6 
0 0 
2 10 
1 3 0 
1 9 1 24 
1 1 0 18 
I 9 0 U) 
1 i; 
3 
(2 cwt. of sulphate of) I ^ 
j\ ammonia ....); i | 
VIII. (fiewt. of ulmateof) ^ ^ j g ^ ^ g ' 3 0 8 i 1 8 2 21 
I ammonia .... I, I 
' \ ' \ 
For the sake of better comparison, the increase per acre in corn 
and straw over the unmanured portion of the experimental field 
is stated in the next table : — 
Table showing the Increased Produce per Acre in Corn and Straw 
(including Cavings and Chaff) over the Unmanured Plot J V., in lbs. and 
bushels. 
2^ cwt. of Peruvian guano 
4 cwt. of wheat-manure 
\h cwt. of nitrate of soda 
f 1^ cwt. of nitrate of soda and :i cwt.] 
[ of salt ( 
3 cwt. of salt 
2 cwt. of sulphate of ammonia 
6 cwt. of ulmate of ammonia . . 
Total prodiice of unmanured plot 
Increase In Corn 
per Acre. 
lbs. 
r)92 
604 
878 
892 
422 
830 
.'504 
1924 
Increase in .Straw 
per Acre. 
bush. lbs. 
9 34 
9 42 
14 10 
14 24 1 
G 50 i 0 1 0 22 
13 24 ! 0 6 2 14 
8 8 j 0 7 2 6 
31 2 1 1 0 18 
tons cwt. qrs. lbs. 
0 4 1 0 
0 1 3 14 
0 8 1 6 
0 7 3 20 
It will be seen that all the top-dressings produced a consider- 
able increase in corn. Nitrate of soda and salt, as in former years, 
g-ave the best return, though almost identical with that obtained 
Irom nitrate of soda alone. Previously, both in 1859 and ISGO, 
the addition of common salt to nitrate of soda had an excellent 
effi'ct upon the crop. The apparent inefficiency of this admixture 
in 1861 is the more surprising, as salt alone then produced an 
increase of nearly 7 bushels of corn. 
There are here several other anomalies against which we must 
