314 Experiments upon Wheat, Barley, and Swedes. 
Gathering these results together, so as to obtain a general 
view, we are able to construct the following table : — 
Table XI. — Increase ix Produce per 100 lbs. of Nitrate of Soda per Acre. 
E.xperimenters. 
When 80 to 90 lbs. 
per Acre was used. 
When 163 lbs. 
per Acre was used. 
^Vhen 336 lbs. 
per Acre was used. 
Earl Batliurst 
lbs. of Wheat. 
178 
lbs. of Wheat. 
220 
lbs. of Wheat. 
252 
257 
150 
277-8 
197 
Average 
Of 2 Plots— 
164 
Of 12 Plots— 
234-7 
Of 3 Plots- 
2.^7 
Mr. Ruck's experiments, it must be remembered, were made 
upon stiff land, and illustrate a fact previously observed, that 
clay land does not respond to applications of nitrate of soda so 
freely as land of a lighter character.* 
These results may easily be reduced to a money standard. 
Taking nitrate of soda at IGs. per cwt. then 100 lbs. will cost 
14s. '6\d., and reducing the wheat increase into bushels of 62 lbs. 
each, we find that for an expenditure of 14.9. SJrf. : — 
Earl Batliurst obtained 3^ bushels of wheat, which at fis. per 
bushel = 21.5. 
Tlie College for an expenditure of 14s. ^\d. obtained 4 bushels 
of wheat, which at (is. per bushel = 24s. 
Mr. Smith, of Bibiiry, for an expenditure of 14s. ?>\d. obtained 
4^ bushels of wheat or 27s. 
Mr. Ruck, of Braydon, for the same expenditure obtained 
34- bushels, or, at 6s. per bushel, 19s. 
Reference to the tables will also show a considerable increase 
of straw per acre. 
Several trials were also made as to the advisability of applying 
nitrate of soda at two periods instead of all at once, but without 
any very definite result. (See Tables VIII. and X.) 
Nitrate of Soda mixed with Superphosphate. — The Oakley Park 
Farm results were generally unfavourable to the addition of 
superphosphate. This was borne out by the average results on 
the College Experimental Farm. Mr. Morse, Lord Bathurst's 
bailiff, considered that the superphosphate applied in the spring 
* We hear upon good authority that upon the tract of cold clay land in South 
Durham nitrate of soda is not so highly esteemed as a manure as sulphate of 
ammonia. The latter manure is said to be gradually superseding the former as a 
top-diei>sing for cereals in that locality. 
