FERTILIZER EXPERIMENTS WITH SUGAR BEETS. 15 
Some facts as to the effects of cow manure will be especially in¬ 
teresting. A positive residual effect is noted the second year. 'The 
difference between the manured plats and the other plats which had 
received more of less ineffective fertilizers was even more largely in 
favor of the manure the second year, than the year of its application. 
For instance the difference between the averages of the three manured 
Plats 1, 2 and 3, and the unfertilized or ineffectively fertilized Plats 
6 , 7 and 8 in 1903, the year of application, was 3.2 tons and the sec¬ 
ond year 3.5 tons, in favor of the manure. 
In the third year after application the residual effects entirely 
disappeared in the case of the cow manure, the difference in fact be¬ 
tween the plats just given, being a small fraction or 0.16 tons against 
the manure. 
While there are interesting after effects the second year of the 
application of manure, the yields are not proportionate to the 
amounts used in the previous year, being only slightly more with 
sixty and thirty tons than with fifteen tons. 
Thus if the cost and the expense of the application are deducted, 
there is little if any net profit from the increased yield of sugar beets in 
the year of the application, of a moderate or large amount of manures, 
but that the returns are found in the succeeding year therefore clear 
profit except for the expense of topping and delivery of the ex¬ 
tra quantity. 
It is also seen that large to excessive quantities of manure used 
are sheer waste, and that returns as good if not better are obtained 
with medium amounts. 
In the case of ariy residual effect from nitrate of soda where it 
was used in any quantity alone or with potash or phosphoric acid, 
leaving out its use in Plat 3, with manure, which obscures its effects' 
in Plats 4, 5 and 10, on the face of the returns, there actually appears 
to be beneficial after effects, although this is probably a coincidence 
due to some inherent difference in the quality of soil on these plats 
for it would be almost absurd to suppose that an easily soluable, and 
in the soil, unstable compound like nitrate, would remain until a second 
season. 
Comparison of the sugar content of the beets of the three manured 
plats and the unmanured Plats 6, 7 and 8, previously mentioned, 
shows a difference between the averages the first year of 1.7 per cent' 
and the second year only 0.3 per cent. The difference in yields be¬ 
tween the two was greater the second year than the first, but of 
course with a lower average yield all around. The purity coefficient 
shows a difference of 2.5 and 1.9 when compared in the same way. 
The point of the whole matter is that in the second year the sugar 
content and purity of the beets from the manured plats, with higher 
yield, was just about as good as that of the unmanured plats with low¬ 
er yield, which was not the case the first year the manure was applied. 
Acknowledgements for furnishing the raw materials for these 
experiments are due Mr. Wm. S. Myers, of the Nitrate of Soda Propo- 
