Report on the Field and Feeding Experiments at Wohurn. 139 
It will be remembered that for the last three seasons the 
unmanured ph)t 1 produced more wheat than the second un- 
manured ph)t 7 ; the results obtained on the unmanured 
barley plots during three seasons in succession exhibit similar 
differences, and distinctly prove that that part of the ex- 
perimental field which comprises the unmanured wheat and 
barley plots (No. 1) is in a higher agricultural condition than 
that in which the second unmanured corn plots (No. 7) are 
situated. 
It will be further seen that the produce in 1879 on all the 
eleven experimental plots fell considerably below that of 1878. 
With the exception of the dressed corn raised with nitrate of 
soda on plot 3, which weighed only 49 lbs. per bushel, the barley 
on the remaining plots weighed from 50 to 53 lbs. per bushel, 
or only one or two pounds less than the weight of a bushel of 
wheat grown on the several experimental wheat plots. 
The Experiments in Rotation. 
Rotation No. 1.— 1877, seeds ; 1878, wheat ; 1879, roots ; 
1880, barley. 
Roots, 1879. — Less litter having been used in making the 
dung in the feeding-boxes for the mangold experiments, and 
the straw used as litter having been cut into chaff, the dung 
came out of the boxes short and fairly well-fermented. It and 
the mineral manures on plots 3 and 4 were applied to the land 
in spring before the seed was sown. 
The nitrate of soda on plots 3 and 4 was sown by hand 
between the rows in the middle of June, after the plants had 
been singled out and become well-established in the soil. 
Within a week's time after the application, the nitrate of soda 
began to tell upon the mangolds ; and all the time the mangolds 
were in the ground the nitrated plots, especially plot 3, which 
received the larger top-dressing of nitrate of soda, grew more 
vigorously and were in a more flourishing condition than the 
plots which were manured with dung only. 
The seed was sown in the first week of May, and came up 
well ; but the weather was so cold in May and June that the 
young plants made hardly any progress, and it was only with 
great trouble and expense that they could be kept fairly free 
from weeds. 
Even after the mangolds were singled and had every chance 
of growing, they made no start, and were miserably small in 
August and September. There was a regular plant on all the 
plots ; but want of heat and sunshine told upon the crop, and 
