16 The Colorado Experiment Station 
statement of them in this connection will be interesting, especially 
as I shall, in another place, discuss the composition of these beets so 
that we shall see the effects upon both the crop and its composition. 
The area of the field used is almost exactly fourteen acres divided 
into one-half acre plots, so there were twenty-eight plots. The field 
is very nearly level but the soil of the west half may be a little lighter 
than that of the east half. It is all quite heavy. In 1909 six acres 
of this land received a dressing of stockyard manure, at the rate of 
twenty tons to the acre. Stockyard manure is the dung of cattle fed 
on alfalfa hay, beet pulp, molasses and straw to which grain is added 
during the final stages of feeding. This manure was plowed under 
to a depth of '10 inches. The other fertilizers were sown on the 
surface and cultivated in to a depth of four inches. There were 
twelve plots that received an application of stockyard manure in 
1909 and sixteen that received none. There were two check plots 
selected, one in the west, the other in the east half, which received 
no fertilizer of any sort, and one plot which received no frtilizer 
other than the stockyard manure. In 1909, the plan of experimenta¬ 
tion included the following fertilizers, potash, phosphoric acid, nitro¬ 
gen, lime, both burnt and waste lime, and farmyard manure. The 
plots were divided into two groups of fourteen each and one plot in 
each group received the same treatment, in other words, was dupli¬ 
cated. The numbers on the west half run from 12 to 25 inclusive, 
and on the east half from 26 to 39 inclusive. The weights given 
are the amounts applied to each half-acre plot. P. stands for super¬ 
phosphate, Iv. for potassic sulfate and N. for sodic nitrate. 
The statement of the results shows that the returns from the 
west side of this field were very much better than those from the 
east side, though there is nothing but an arbitrarily taken line to 
divide them. While each combination of fertilizers was applied to 
two plots, one on each side of the middle line, it is evident at a glance 
that we can only compare the results obtained on the same side and 
these are so capricious that no one would venture to draw any con¬ 
clusions even tentatively except of the most general sort, i. e., such 
as that the application of fertilizers did some good. There was 
only one check plot on the west side of the field; this yielded 10.1 
tons of beets per acre. Two plots received an application of 20 tons 
stockyard manure per acre and yielded 10.3 and 12.8. Two re¬ 
ceived phosphoric acid, potash and nitrogen and the yields were 12.8 
and 11.6. Two received phosphoric acid and nitrogen and the 
yields were 16.6 and 9.4. Two received phosphoric acid and potash 
and the yields were 14.2 and 14.6. Two received potash and nitro¬ 
gen and the yields were 15.2 and 13.2. Two received phosphoric 
acid, potash, nitrogen and lime and the yields were 21.9 and 13.1, 
and one received waste lime alone and yielded 10.4 tons. 
