370 Report oF THE HorTICULTURAL DEPARTMENT OF THE 
and new wood need be considered in respect to amounts of plant- 
food used. 
TABLE X.—AMOUNTS OF NITROGEN, Eirc., Usep PER Acre BY DIFFERENT PARTS 





OF TREE. 
| Variety of fruit | y: Phosphoric | Potash Lime Magnesia 
3 eben heat tree. Nitrogen. |acid (P.0;). | (K20). | (CaO). | (MgO). 
Lbs. Lbs. Lbs. Lbs. Lbs. 
ECE 1 Ia ae bh ADPplerwuiw ess. 20.0 8.5 45.0 ooy 6.4 
Rrurtient 2) see hs | Peach iene 17.5 8.6 36.0 gre 4.1 
EUPULOS see ake Wears. Teak. 9.0 3.2 20.2 Pare 2.6 
PORTE Gn teee e ds cats ay fe Ske. ei Loo 4.7 18.5 4.4 3.0 
12) bh aed ae BR i iQninees .”s 34a ee | 222.0 10.0 44.4 3.4 | 6.0 
Vat sess. TO | Average........ | 16.4 7.0% 32s 3.2. 4.4 
Leaves ee 6) Cc i ee, 30.3 4.8 9.5 49.7 16.3 
CAVES A phitess! suclend AEDS EereVe) © Repeal pati | 50.4 8.0 32.9 94.6 28.5 
WICHVES ee ete Care Pear ee eeheor tee 18.5 oa 10.7 SURE Tae 
Leaves. 2.4... %.| elum ee 13.2 2.9 WieG 26.8 8.5 
TRAV Sere ube. Sees | 20.4 4.1 9.8 46.1 11.0 
Peaves....> ¢. 5+ <} AVOTSER. wi see Ss 26.6 4.6 16.1 49.6 14.3 
New wood... >.'s] Apple. ..20 5. 6.) galt 0.4 762 sel W 0.6— 
New MOO Gy ocd DE BACH. < a Py ik oe | 6.6 1.6 3.4 17.4 2.6 
New wood....... | (POSE geese ee Pie? 0.8 2-0 5.4 Vad 
New wood....... | RARE stare sched vind (A Ba 6 1.8 10.0 1.5 
New wood.......| Cie sates cena s | Sel alse 2.6 1628 1.9 
New wood....... | Average, oben ein See 1.0 Pie 10.4 4.5 
| 1 


From the data in Table X, we gather the following state- 
ments: 
(1) In respect to the amounts of plant-food used per acre by 
the fruit of the different varieties of trees, the amounts of nitro- 
gen, phosphoric acid and potash in the different fruits are in 
about the following order: Quinces use the most, and then fol- 
low apples, peaches, plums and pears. 
(2) Potash is present in the fruit in larger quantities than is 
any other plant-food constituent; nitrogen comes second, being 
present to the extent approximately, of one-half the amount of 
potash. Then follow, in order, phosphoric acid, magnesia and 
lime, all of these being present in much smaller amounts. 
(3) In the leaves, the plant-food constituents used per acre 
are greatest in the case of the peach, the nels coming second 
and then quince, pear and plum. 
(4) Lime is present in the leaves and also in the new wood in 
much larger quantities than any other plant-food constituents; 
nitrogen comes second, followed in order by potash, magnesia 
and phosphoric acid. 
(5) In the new. wood, the plant- tood constituents used per acre 
are greatest in the case of the peach trees after which come in 
order quince, plum, pear and apple. 
