Report on the Field and Feeding Experiments at Woburn. 335 
Although the experiments on the continuous growth of wheat 
on very light land certainly were not successful in an economical 
point of view, they are, nevertheless, instructive, as they appear 
to point in the direction that on very light soils wheat cannot 
be economically grown for a succession of years, even with the 
application of large quantities of artificial manures, the cost of 
which must prevent their being used in practice. It would, 
however, be premature to draw such a conclusion from the 
results of two years' experience in growing wheat in succession, 
but I fully anticipate that a few more seasons will definitely 
decide this question. 
The following is the cost per acre of the artificials employed 
in the experiments on the continuous growth of wheat and 
barley : 
About 
£ s. 
On Plot 2. Ammonia-salts alone 2 2 
„ 3. Nitrate of soda alone 2 0 
„ 4. Minerals alone 3 5 
„ 5. Minerals and ammonia 5 7 
,, 6. Nitrate of soda and minerals 5 5 
,, 8. Ammonia and minerals 7 9 
9. Nitrate of soda and minerals 7 5 
The Experiments on the Continuous Growth of 
Barley. 
The manures applied for the barley were the same as those 
for the wheat experiments. 
The dung, which was made in the experimental boxes at 
Crawley Mill Farm, from a weighed quantity of food and litter, 
and was estimated to contain nitrogen corresponding to 100 lbs. 
of ammonia per acre for one plot, and to 200 lbs. of ammonia 
per acre for the other plot, was put upon the land on the 14th of 
February, before the barley was sown. The mineral manures as 
well as the ammonia-salts were sown broadcast on the 2nd of 
March, 1878, and the barley was drilled in on March 6th, 1878. 
The barley-harvest began on the 8th of August, and the whole 
of the produce was carted and stacked on the 19th of August, 
and threshed out on the 21st of October, 1878. 
The Table on p. 366 shows the produce obtained. 
The permanent barley was light, slightly blighted, but not 
nearly so much so as the wheat grown by its side. 
The barley was not well filled. The only plots on which the 
barley went down to some extent was plot 9, manured with 
minerals and 550 lbs. of nitrate of soda per acre. On all the 
other plots the crops stood well. On plot 9, it will be seen, more 
straw was produced than on any of the others. 
