New York AGRICULTURAL EXPERIMENT: STATION. 317 
western New York. There can be but one explanation: Prior ta 
1893 the orchard was in sod, but during the continuance of this. 
experiment it has been kept under cultivation and seemingly grew 
much more productive under the treatment. 
TasLteE VII.— Sum or THE AVERAGE YIELDS OF APPLES WITH AND WITHOUT 
APPLICATIONS OF PoTASH AND PHospHoRiIc ACID. 
(ES SS Se cereal DR SSE A 








| 1893. 1894. 1895. 1896. 1897. 1898. 
pawemewieg. Ph | Atad tated ore 
Seated MMUSHElS! ... 5... shales 2 LOe21 23 .80 Sa Wonk Liolek’ 28.59 SP 4. he 
Untreated, bushels:’y. 2.5.22... ot 16.28 Soba LOLF4Z Pin perslyg 24470 
= 



TasLte VII.—(Continued). 
(Ue 2 Re 0 SNS See ee eee a et es TS 







1899. 1900. 1901. 1902. 1903. 1904. 
imeabemapushels: i. ..-. 2th ost 24,14 70,04: 9.14 OD) EO BNR Meee ste og 98.74 
Unireated) bushels. .<)... 0... b gear x! 59.96 6.18 TOs OO Ores. Me 87.18 
eee ern cee te A 
A study of the yields shown in these tables gives only uncer- 
tainty as to the effect produced by the fertilizers. If we regard 
the varieties separately, there are but two of the five varieties, 
Roxbury and Northern Spy, in which the effect has been suffi- 
ciently great to be looked upon as outside the range of varia- 
tion; when we consider the varieties collectively the average 
annual gain per tree, 1.24 bu., is not great enough to be of 
practical importance. It must be noted, too, that the results 
obtained at the end of the five-year period, and those of the 
twelve-year period, are reversed with two of the five varieties 
and very materially changed with the other three. 
Let us calculate the financial gain from the use of the fer- 
tilizers. Taking the sum of the gains and losses for the five. 
varieties, for a hypothetical five acres, and we have in round 
numbers an annual gain of 99 barrels, including firsts, seconds 
and culls. At $1 per barrel, a fair average for twelve years 
for the three grades, we have $99 greater income from the 
treated five acres than from the untreated. With potash and 
phosphoric acid at five cents per pound each, the value of the 
fertilizer applied is $74.50 and we have a gain of but $24.50, 
not counting the work of handling, applying and working in the 
