New YorK AGRICULTURAL EXPERIMENT STATION. 233 
THE INTERLAKEN EXPERIMENT. 
Conducted by F. C. and L. B. Bradley, Interlaken, N. Y. 
Ten acres of potatoes, variety Carman No. 3, were sprayed 
four times—June 27, July 10, 28, and Aug. 10. The sprayer 
used was a two-horse, four-row “ Watson” sprayer carrying 
one nozzle per row in the first two sprayings and two nozzles 
per row in the last two. Part of the bordeaux used was of 
the regular 4-4-50 formula and the remainder soda bordeaux. 
Water was obtained from a stream about 30 rods from the 
potato field. Paris green, at the rate of one-half pound to 
fifty gallons, was applied with the bordeaux in two sprayings, 
but it appears that the second application was unnecessary. 
Three rows were left unsprayed for a check. These were 
treated with paris green once. There was no blight whatever 
and only a moderate amount of damage done by flea beetles. 
Tip burn was severe; also, many plants died prematurely from 
an unknown cause, although the crop was given excellent care 
and cultivation. There was no appreciable difference between 
sprayed and unsprayed rows: 
The expense account contained the following items: 

Pomona copper BUlDna LE Or GRC. pe. Wad diice wales sled melanie ole $14.95 
PIECE UTERO NYP NA RULR clslare sr Caled acts smd’ s aa ain sents 2.55 
SEES OGG 0 7) 2 Sn eee ee ee ee .63 
Petre Delis FPTEOT (DAAC ofl gic, ga hae leWaue is Hard Sfanary one ae cepts 3.45 
MEE IELLINOT, (CN UC ee tot ede cle Aly aU! cain shoes & wcate ia @lite ohne 10.60 
Prete dV IA DON (OUCH Oe ek oe aes eee tiak cd eaen eens noes 3.70 
Deemer p OT AVeltan ty (ma el: eobig eis tlh bh eeites, Wid OU WE wend 2.00 
Rea a dee ace) NS A ae he oe tate LEN De hues fai ge $37 .88 
The test rows were 893 x 3 ft. They yielded as follows: . 
‘Two sprayed rows, 603 lbs.==81.7 bu. per acre. 
Middle check row, 312.5 lbs==84.7 bu. per acre. 
Loss, 3 bushels per acre. 
‘A carload of the potatoes was sold directly from the field 
at 57 cents per bushel. At this price, 3 bu. have a value of: 
$1.71. Adding to this the expense of spraying, $3.79 per acre, 
the total Loss is shown to be $5.50 per acre. 
