New York AGRICULTURAL EXPERIMENT STATION. 363 
~ 
PLUM TREBS. 
In Table IV given below, we present the results obtained with 
two varieties of plum trees, Grand Duke and Italian Prune. The 
former was 9 years oid; the latter 10 years. 
TABLE IV.—PLANT Foop USED IN ONE SEASON By PLUM TREES. 
WEIGHT. 















VARIETY. Part. Weight. ahi Nuttae “bea Potash | tame ae 
gen. (P.O;.) CK5O)), (CaO). | (MgO) 
me Le 
Lbs Lbs. Lbs. Lbs. | Lbs. Lbs. Lbs. 
Grand Duke .|Fruit pulp..... 46.12 40.60! 0.045 0.019} 0.054 0.005} 0.006 
Italian Prune. |Fruit pulp..... 85.65 G3, 44 UOeI16 0.042} 0.226) 0.013} 0.021 
Grand Duke .|Stones......... 2.89 0.90' 0.015 0.004) 0.003} 0.002} 0.003 
Italian Prune. |Stones......... 5.28 1.37; 0.027 0.007; 6.007) 0.006) 0.006 
Grand Duke .|Stems......... 1.05 0.62} 0.004 0.001; 0.001; 0.007; 0.002 
Italian Prune. |Stems......... S200 2.26) 0.014 0.005! 0.018} 0.041; 0.012 
Grand Duke .|Leaves........ 9.94 6.07} 0.069 0.017, 0.043) 0.210) 0.064 
Italian Prune.|Leaves........ 19.56 T2E92 Os Lod 0.032) 0.250) 0.237| 0.077 
Grand Duke .|New wood.:... 2.50 1.24) 0.013 0.005} 0.006; 0.046; 0.008 
Italian Prune.|New wood..... Tels 3.58} 0.037) 0.012) 0.024) 0.120; 0.017 
Grand Duke..|Total weight. .. 62.50 49.43) 0.146 0.046} 0.107' 0.270) 0.083 
Italian Prune. |Total weight... 121237 93.57) 0.345 0.098; 0.525, 0.417) 0.133 




The dat'a embodied in Table IV may be summarized in the fol- 
lowing statements : 
i 
(1) Weight.—The total amount of dry matter removed from 
the trees in the form of fruit, foliage and new wood averages 
20.44 pounds to a tree, of which 43.6 per ct. is found in the fruit- 
pulp, 25.6 per ct. in the leaves, 14.4 per ct. in the plum stones, 
11.7 per ct. in the new wood and 4.7 per ct. in the fruit stems. 
(2) Nitrogen.—The average amount of nitrogen in the products 
taken from each tree is about 0.25 pound, distributed as follows: 
In the leaves, 44.8 per ct.; in the fruit pulp, 32.8 per ct.; in the 
new wood, 10.2 per ct.; in the fruit stones, 8.5 per ect.; in the 
fruit stems, 3.7 per ct. 
(3) Phosphoric Acid.—In the products removed from each tree 
there is an average of 0.7 pound, of which 42.4 per ct. is found 
in the fruit pulp, 34 per ct. in the leaves, 11.8 per ct. in the new 
wood, 7.6 per ct. in the fruit stones, and 4.2 per ct. in the fruit 
stems. 
(4) Potash.—The average amount of potash removed by the 
product's of each tree is about 0.32 pound, distributed as follows: 
46.4 per ct. in the leaves, 44.3 per ct. in the fruit pulp, 4.7 per 
et. in the new wood, 3 per ct. in the fruit stems and 1.6 per ct. 
in the fruit stones. 
