288 The Woburn Field Experiments , 1905 and 1906. 
It was almost incredible tliat so great a change could be 
effected in so short a time by the application of a mere 
“ sprinkling ” of lime, and this alone justified the departure 
that was made in 1905 and the greater complexity of the 
plots involved thereby. On the other hand, the repetition of 
2 tons of lime in 1905 (plot 2bb) did not seem called for, 
and it has been, accordingly, made clear by these experiments 
that the influence of a dressing of 2 tons of lime to the acre 
will last, with corn crops, for at least nine years. Similarly, 
the application of 1 ton of lime to 5b did not increase the 
yield, but it has to be remembered that plot 5a was 
exceptionally good this season. Ammonia salts (heavy 
dressing) with minerals, including lime, took the produce 
to 34*7 bushels (8bb), practically equalling that from the heavy 
nitrate of soda dressing with minerals (9b). The omission of 
nitrate of soda for a single year (9a) resulted in a fall to 7*4 
bushels (9a), the decline, when ammonia salts were similarly 
left out (8aa), but lime used, being nothing like so great, viz., 
to 21 4 bushels. As remarked before, plots 1 and 4, are both, 
through the influence of overshadowing trees, unreliable. The 
full returns are given in Table I., page 284. 
The same features as in 1905 of large quantity of tail corn, 
together with low weight per bushel, resulting from the use 
of nitrate of soda (plots 3, 6, and 9), are noticeable. The best 
weight per bushel was given by rape cake (10b) and ammonia 
salts with lime (5b). Lime, when applied, seemed generally 
to improve the weight per bushel. The wheats were only of 
medium quality and, with three exceptions, did not come up 
to the average samples of the district. The highest prices 
were obtained with ammonia salts and minerals with lime ; 
rape cake and farmyard manure were not much behind, while 
nitrate of soda gave the lowest prices, the wheat not being 
good enough for milling purposes. 
Continuous Growing of Barley (, Stackyard Field), 
1905 (29th Season). 
The land was prepared through the winter and ploughed 
a second time, March 1-3, 1905. “ Hallett’s Chevalier ” barley 
was drilled on March 10, at the rate of 10 pecks to the acre. 
At the same date lime was applied to plots 2aa, 2bb, and 5aa 
in the same way as with the continuous wheat plots. Very 
stormy weather followed and it was not until March 17 that 
the mineral manures could be put on, as also the rape dust 
(plot 10b), farmyard manure going on to plot lib still later 
(March 21). The nitrogenous top-dressings were applied, the 
first halves of the heavier dressings on April 17, and the second 
