Percentage of Emportant Constituents in (sh 
Name of Variety of | Phos- Oxide | 
Apple phoue Potash | Soda of Iron Line Magnesia Silica 
C1 
Duchess of Oldenburg 8 90 03 67 3 25 177 5 80 9 20 36 
Wealthy 8 15 57 00 2 65 1 76 3 33 3 84 63 
Fameuse 7 19 36 25 2 36 1 26 3.55 4 08 32 
| 
Northern Spy 11 68 54 11 1.94 2138 3 86 3 99 1 11 
Average 898 | 55 26 2.61 1 72 4+ 38 427 60 
In this table the composition of the 
ash in detail is given. Of its components, 
phosphoric acid and potash are the prin- 
cipal. The latter constitutes over half of 
the ash (55.26 per cent), while the for- 
mer is about 9 per cent, the average being 
898 per cent 
No great differences between the vari- 
eties are here to be noticed, though the 
Northern Spy presents some striking va- 
riations from the average. Its ash con- 
tains nearly 3 per cent more phosphoric 
acid, nearly 1 per cent less soda, about 
5 per cent more silica than the ash of 
the other apples. 
The ratio of the potash to the phos- 
phoric acid in the ash of the fruit is 0 
to 1; in the ash of the old leaves it is 2 
to 1. Relatively, therefore, the demands 
of the leaf and the fruit on the soil of 
these two constituents are very different. 
It might here be remarked that the 
greater quantity of the ash ingredients 
ot the fruit is contained in the seeds and 
walls of the ovary, comparatively little 
being found in the flesh of the apple. 
A comparison of this table with that 
showing the composition of the ash in 
the leaf, will reveal further interesting 
features. The total percentages of ash in 
similar weights of leaf and fruit, are as 
3.46 to .28. Lime is much more abundant 
in the ash of the leaf, while magnesia, 
oxide of iron and silica are about the 
same, taking the older leaves for com- 
parison. 
For the purpose of a practical presenta- 
tion of the subject, the data presented in 
the following table have been prepared: 
Weight of Important Fertilizing Constituents Withdrawn from, the Soil 
: Nitrogen Phosphoric Acid Potash 
Average 
weight 
Name of Variety of per Lbs. per Lbs. per Lbs. per 
Apple bushel in| Lbs. per | acre, or | Lbs. per| acre, or | Lbs. per | acre. or 
pounds | barrel 160 barrel 160 barrel 160 
barrels barrels barrels 
Duchess of Oldenburg 44 046 7 359 027 4 307 162 25 975 
Wealthy . 50 057 8 220 032 5 181 226 36. 232 
Fameuse 50 070 | 11 223 031 5 043 256 39.456 
Northern Spy . 46 .056 9 006 039 6 383 185 29.570 
Average.... . 47 5 .057 8 952 032 5.228 217 32.880 
