114 Report on the Field and Feeding Experiments at Wohurn. 
containing- the calculated amount of ammonia required, namely, 
nitrogen equal to 100 lbs. of ammonia on plot 10, and 200 lbs. 
on plot 11, was applied to the land as a top-dressing. 
The first hoeing was given to the wheat on the 31st of March, 
and by that time the dung had become well incorporated with 
the land. The wheat was repeatedly hoed, and neither labour 
nor expense was spared to keep the land clean. It was press- 
rolled on the 3rd of May. 
The wire-worm unfortunately troubled the wheat very much, 
and on some of the plots, notably on plot 7 (unmanur?d), there 
were a good many blank spaces which it was not possible to 
fill up by transplanted wheat as completely as I could have 
wished. On most of the plots the wheat plant was rather thin, 
and, owing to the attacks of the wire-worm, there were a good 
many blanks in some of the plots. An attempt was made, I 
fear without much effect, to catch wire-worms by a gang of boys 
who gathered no less than 15,000 wire-worms, small and large, 
from the 21 acres in permanent wheat. The plots which 
suffered most from the attacks of wire-worms were the two 
unmanured ones, more particularly the second unmanured plot, 
No. 7, and the plots which were top-dressed with nitrate of 
soda only and with sulphate of ammonia without the addition of 
•minerals. On the plots manured with a full dressing of both 
mineral and nitrogenous fertilizing matters the plant was much 
better, and apparently not suffering nearly as much from the 
■effects of the ravages of wire-worms as those which were 
unmanured or only partially manured after having grown, 
previous to 1880, three crops of wheat in succession. 
The cutting of the wheat began on the 3rd of September and 
finished on the 10th of September, 1880; it was carted and 
stacked on the 20th of September. 
The wheat was threshed in the field by means of a portable 
threshing-machine on the 5th of November. The straw of each 
plot was weighed in the field, and the corn of each plot bagged, 
carefully labelled, and stored in the granary until the 19th of 
November, when the gross weight of corn from each plot was 
ascertained, and the whole of the produce was measured out and 
the weight of each bushel taken. In each case the gross weight 
agreed well with the weight obtained by adding the weights of 
the number of bushels which each plot produced. 
The Table on page 115 shows at a glance the treatment of each 
plot as regards manure, and the results of the harvest of 1880. 
The cold weather in July and August and the heavy and 
continuous rains which fell in July told very unfavourably 
upon the wheat-crop. The corn did not properly fill up, as 
