New York AGRICULTURAL EXPERIMENT STATION. 253 
_ Increase in yield due to spraying three times, 18 bu. per acre. 
Increase in yield due to spraying six times, 31% bu. per acre. 
In all six years during which these experiments have been in prog- 
ress the gain from spraying at Riverhead has been much smaller 
than at Geneva. The exact amount of this difference is shown in 
the next table. | 
SUMMARY OF RESULTS OBTAINED IN THE TEN-YEAR 
EXPERIMENTS, 1902-1907. 
The following table shows the results obtained in the ten-year ex- 
periments during the first six years: | 
TABLE XV.— SUMMARY OF THE TEN-YEAR EXPERIMENTS FOR SIX YEARS. 
—— 
—« 

AT GENEVA. AT RIVERHEAD. 
r Gain per : Gain per : : 
YEAR, paket te Gain per Parity FS Gain per 
bah easenthin acre due ferenerwin acre due 
baat Ae a to spraying pd oe fa to spraying 
Bears | three times. BoE dy three times. 
Bu. Bu. | Bu. Bu. 
MAN Reese: Be Pe ote wl ae fete eee EE 1234 984 45 272 
IM OTA: se 8 eda iy lg ee de ARE Lis 4 88 56 394 
TE En ALS 9a Ee REID is = arn ee 233 191 96 564 
ate oS) eye Sree eee i es ee eit 
3) OR aR ee foal 732 44 31 18 
NESE TAC Oietcte is cisarbie ottie, s.m ee) one 12124 | 934 604 324 





FARMERS’ BUSINESS EXPERIMENTS. 
During the season of 1907 fourteen farmers in different parts of 
the State conducted business experiments in co-operation with this 
Station. The object of these experiments is to determine the actual 
profit in spraying potatoes under farm conditions. The methods 
employed were essentially the same as in previous years. An ac- 
curate record was kept of all of the expense of spraying, including 
labor, chemicals and wear of machinery. In each experiment a 
strip of three to six rows was left unsprayed for comparison. 
In order to bring the account of the experiments within the re- 
quired space limit it has been necessary to omit many interesting 
details. | 
Throughout this bulletin the word “ spraying” is used in a re- 
stricted sense. It means the application of bordeaux mixture ex- 
clusively and not the use of paris green with water. 
