New YorK AGRICULTURAL EXPERIMENT STATION. 139 
The yield of culls was at the rate of 20 bushels per acre for 
the sprayed, and 28 bushels for the unsprayed. 
The loss from rot was not measured but it was considerable 
and seemed to be fully as great on the sprayed as on the un- 
sprayed. 
It seems likely that in this experiment the difference of 88 
bushels per acre shown by the test rows is greater than the 
actual gain due to spraying. Our reason for this opinion is the 
fact that the average yield of the field in which the test rows 
were located was far below that of the single sprayed row 
weighed. From a little over four acres only 900 bushels 
were sold making an average yield of less than 225 bushels per 
acre, while the sprayed row which was weighed yielded at the 
rate of 295 bushels per acre. Of course it is possible that the 
soil where the test rows were was better than the average and 
that the sprayed and unsprayed row had an equal chance in 
this respect, but so great a difference is to be regarded with sus- 
picion at least. Had the yield of a sprayed row on the other 
side of the check rows been obtained, perhaps this uncertainty 
might have been cleared up. Mr. Jagger states that the sprayed 
row weighed, appeared to be the best one in the field, but he 
cannot explain why it should be so. 
Although Mr. Jagger evidently did a fairly thorough job of 
spraying it is equally plain that still more thorough spraying 
was required to control the blight. It is in such violent cases 
as this that extra thorough work pays. We are confident that 
the kind of spraying done in the ten year experiment at Geneva 
would have produced double the gain obtained by Mr. Jagger. 
The items of expense for spraying fourteen acres in this experi- 
ment are as follows: 
656 pounds copper sulphate at 534¢.................. $37 72 
eee SOIT zat ban locst) ste hae, Ge, Sip beie oot boca BVedete! «eh iadec’s aes 2 70 
Per oounds paris ereen -atl4c so tees ween walle ee be 15 40 
tenors, labor for mans at 20. aeduwdclis os eed Ghee 3 20: 20 
eeOUrS eA DOL Lore NOTNes AL LUCY Iie ee sues ties ae ares 10 10 
MEMO ISME SS TTLV OL, Conte's esis ce ces 0 4 tie a SiseMtene Cla< pie ips $ 5 00 
MUR ErMeS Seren Wels Cheers go BAS shone) e ale oo S Oe ee Ee $91 12 
Total cost per acre for eight sprayings.............. $7 2 
1 
Most persacre forreach spraying, 2.54503 0. 90 
