New York AGricutturRAL EXprrRiMEnt SraTion. 89 
unsprayed plants were on September 10, making the period of 
growth for the sprayed plants at least twelve, and probably four- 
teen, days longer than that of the unsprayed plants. It should 
also be noted that the sprayed plants were in almost full foliage 
until within a short time of their death, and were thus able to 
assimilate at their full capacity throughout the greater part of 
their life. The unsprayed plants, on the contrary, lost many of 
their leaves early in the season and their power of assimilation 
was greatly decreased. 
At Riverhead.— In the experiment at Riverhead, “ bugs” gave 
practically no trouble. There were only traces of early blight 
and no late blight. Nevertheless, the sprayed plants lived sev- 
eral days longer than the unsprayed plants. This is owing to 
the fact that flea beetles were rather plentiful at times and in- 
jured the unsprayed plants most. 
On August 11 the contrast in color between the sprayed and 
unsprayed rows was so marked that it could be plainly seen at 
a distance of one-half mile. At this date, there was still a little 
green foliage on series .I, sprayed three times, and on some of 
the plants the tubers were probably growing a little. Only a 
few stalks were dead and dry. 
On series II, sprayed seven times, about one-third of the 
foliage was yet alive and the tubers must have been growing 
considerably. The lower leaves were mostly dead, but plants en- 
tirely dead were rare. While the plants on this series were con- 
siderably injured by flea-beetles, they were not nearly as bad as 
the plants on series I, sprayed three times, or on series III, un- 
sprayed. A considerable portion of the increased yield on series 
II is attributable to better protection against flea-beetles. At 
the same time, the plants on series III, unsprayed, were all 
dead and about forty per ct. of the stems were dry. | 
AS SHOWN BY THE YIELD. 
At Geneva. The potatoes were dug on September 26, 27 and 
30. At that time the majority of the stems on the sprayed rows 
were still succulent, but growth had ceased except in an occa- 
sional plant. The unsprayed plants were all dead and the stems 
dry. 
