368 Report oF THE HoRTICULTURAL DEPARTMENT OF THE i 
TABLE VIII.—RELATIVE PROPORTIONS OF NITROGEN, Etc., IN DIFFERENT PARTS 
oF TREE.— ( Continued.) .. 


Variety of fruit . Phosphoric | Potash | Lime | Magnesia 
-PART OF TREE tree. Nitrogen. | acid (P20. | (K20). | (CaO). | (MgO). 
——_—_——_—_—_—_ | Ss |) 


Lbs. Lbs. Lbs. Lbs. Lbs. 
Leaves......-2.. Applescine aid ascus 1.00 0.16 0.31 1.64 0.54 
IBS V.GS is ee ies ee CAC. aie wleterela e 1.00 0.16 0.65 1.90 0.56 
TU BAVOS te sn al Pear Sc a aktoas 1.00 0.16 0.58 1.66 0.40 
eBVOSyTs<.ete ee Plums. seo 20002: 1.00 0.22 1.33 2.03 0.64 
WIAA VGN eee erie. CJUINCO Nos eee at 1.00 0.20 0.50 2.26 0.54 
MCB VOS}.. ci 0. Average. .0....% 1.00 0.18 0.67 1.90 0.54 
INGW iWOOGSK os. I CADDIC. cock cuieae 1.00 0.35 0.51 2.70 0.51 
New wood....... Peacho-7 2. ose 1.00 0.24 0.51 2.64 0.40 
GING Wi WOOL State toys Oa a cechavere oieke 1.00 0.40 0.95 2.50 0.53 
New wood....... Heed AAW Ba) Aco) penis 4 Bea 1.00 0.34 0.60 8.32 0.50 
New wood... ....|- Quince. 120.2% e 1.00 0.40 0.85 5.15 0.60 
New wood....... | Average........ | 1.00 Or35 | 0.68 3.26 0.51 
A study of the data contained in Table VIII suggests the fol-: 
lowing statements: 
(1) The relative amounts of phosphoric acid do not vary 
greatly in the different varieties of fruit, nor in the leaves of the 
different varieties of trees. There is somewhat more variation 
in the new wood of the different varieties of trees. 
(2) The relative amounts of potash in the different fruits do 
not differ greatly, excepting only plums, in which the proportion - 
of potash to nitrogen is less than in the other fruits, while in the 
leaves, the amount of potash, relative to nitrogen, is much higher 
than in any other variety. This peculiarity may not be char- 
acteristic of plums in general but only in the variety used or of 
the individual tree used. 
(3) The.chief fact in respect to lime that attracts attention is 
the large proportions present in the new wood of the plum and 
quince in comparison with the others. 
AMOUNTS OF PLANT-FOOD CONSTITUENTS USED PER ACRE BY DIFFER- 
ENT VARIETIES OF FRUIT TREES. 
Taking the figures given in Table VI and multiplying by the 
number of trees per acre, we obtain the total amounts of differ- 
ent plant-food constituents used in one season by the growth of — 
fruit, foliage and new wood on one acre. The amount of plant- 
food used by the trees, branches and roots in increasing their 
size is not included in these results. 
