Rotation Experiments. 
291 
soda alone (plot 3) gave 36*3, the average being 35*6, and, 
used in heavy dressing with minerals (plot 9b), it gave the 
exceptionally heavy crop of 608 bushels of corn with 42 cwt. 
of straw, the general average for twenty years being only 49*3 
bushels. It cannot, therefore, be held, as yet, that in the case 
of the barley crop the continuous use of nitrate of soda has 
been detrimental. Both farmyard manure and rape cake gave 
excellent crops, and the failure of the former noted in the case 
of the wheat this season was not repeated. 
The favourable season, though it gave unusually good 
crops on plots 10a and 11a (residue of organic manures), 
did not succeed in allaying the injury done to the land by 
the continued use of ammonia salts without lime, for plot 2a 
(ammonia salts only) was nearly a blank, and plots 5a, 8a, 
and 8b (ammonia salts and minerals without lime) were 
nearly as bad. Wherever, on the contrary, lime had been 
put, the crop, as already observed, derived great benefit. The 
5 cwt. of lime on plot 2aa gave 11*6 bushels, the 1 ton on 
plot 5aa 33*9 bushels, the 2 tons (applied last in 1897 to 
plots 2b and 5b) 25*4 bushels and 44*3 bushels respectively, 
while the further use of 2 tons in 1905 to the previously 
limed plot (2bb) resulted in a further increase of 13 bushels, 
though no minerals (as in 5b) had been put on. The results 
from plots 8aa and 8bb (lime last applied in 1897) would seem 
to indicate that the lime on these plots was getting used up. 
Table II., page 285, contains the full harvest returns. 
The inferiority of quality under the influence of the use of 
nitrate of soda was not so marked as in most years ; rather more 
tail corn was obtained generally, but the weight per bushel 
suffered but little. The best weights per bushel were obtained 
from the farmyard manure plot (lib) and the ammonia salts 
plots (5aa, 5b, 8bb) with minerals including lime. 
Only three of the samples were fit for more than brown 
malt, these being the ones manured with ammonia salts or 
nitrate of soda, in each case with minerals (9a, 8aa, and 5b). 
As a class the barleys were below the average of the district. 
Rotation Experiments (, Stackyard Field). 
As mentioned in the Report for 1904, the new rotation 
scheme was begun that year on the upper (or road side) half of 
the area, the lower half continuing to be cropped alike all over. 
On the upper half (8 acres) kohl rabi was grown in 1904 
and fed off, at the rate of 12 tons per acre, by sheep. On 
Rotations I., II., and III. the sheep had only the roots with a 
little clover hay chaff, but on Rotation IV. they had, on plot 1, 
decorticated cotton cake, on plot 2, maize meal, and on plots 3 
and 4, the roots only, with, in each case, clover hay as before. 
