New York AGRICULTURAL EXPERIMENT STATION. 95 
less mature than those of sprayed plants which grew two or three 
weeks longer. The difference in the degree of maturity between 
the tubers of sprayed and unsprayed plants depends, of course, 
upon the length of time the life of the plants is prolonged by 
Spraying. In those cases in which the unsprayed plants are 
killed early in the season, while the sprayed ones grow on to the 
close of the season and die naturally, it seems as if the difference 
in the maturity of the tubers might be sufficiently great to mate- 
rially affect their food value. In order to get light on this subject 
it was suggested by Director Jordan that a chemical analysis be 
made of tubers from sprayed and puny WED plants in the experi- 
ment at Geneva. 
Accordingly, there were taken fifty consecutive hills from a row 
sprayed seven times (row 8) and fifty other hills from the adjoin- 
ing unsprayed row (row 9) and the entire product placed at the 
disposal of Director Jordan, under whose direction the analyses 
were made. Following is Dr. Jordan’s account of the results: 
“As stated in the foregoing, there was placed in my hands the 
product of fifty hills of potatoes sprayed seven times and of fifty 
hills unsprayed. Both lots were weighed, counted and analyzed. 
The results appear in the following table: 
CHARACTER AND COMPOSITION OF SPRAYED AND UNSPRAYED POTATOES. 
YIELD AND SIZE OF TUBERS. 























| 
| NUMBER OF TUBERS IN 
50 Hiuus. | 
jesean ; ___| Tubers | Total | Average 
TREATMENT. | | in one jweight of weight of 
Min efaharit- Utimen r : hill. | tubers. — tubers. 
| able. |chantable.) Total. | | 
ig | | | ‘| Lbs. Ozs. 
Sprayed potatoes. . .| 345 7 123 bel SAO iy) O42. 3.56 
Unspraved ‘“ 263 79 342°)" 6.84 67.4 3.15 
wee | ul ean sia 
COMPOSITION OF TUBERS. 
| Nitrogen| 
“ENS TREATMENT. | Water. | DIY | Ash. | Protein. free com-| Starch. 
’ | erg pounds. 
Per ct. | Per ct. |Per ct. Per ct. | Per ct. 
4134 | Sprayed potatoes whey 0G: 24. 9 20 O ate oa 16s 8 
4133 | Unspraved ‘“ Pett oe Nee. O au 19.3 15.9 



