New York AGRICULTURAL EXPERIMENT STATION. 157 
60 cents per bushel?! this gain would be worth $21.51. Deducting 
$4.10, the cost of three sprayings, there remains a net profit of 
$17.41 per acre. 
THE MATTITUCK EXPERIMENT. 
This experiment was conducted by W. H. Satterly, Mattituck, 
Long Island, who made a similar experiment for the Station in 
1904. Sixteen and two-thirds acres of potatoes, variety Green 
Mountain, were sprayed with a one-horse “ Schanck” sprayer the 
same one used in the 1904 experiment. Two strips of seven rows 
each were left unsprayed. ‘The entire sixteen and two-thirds acres 
were sprayed seven times—June 24-26, July 4-5, July 10-12, July 
17, July 25-26, August 2 and August Io-11. About one-half the 
field was given an additional spraying July 22. This makes the 
total amount of spraying done equivalent to spraying 11434 acres 
once. ‘The expense account included the following items: 
PMI SICODDSL SILI NAtG (CG) OC, oa ce. cance ess sae ckcser lege ecess $32.40 
ik Sel UTLEY, HODES aa Beg helo ea ae a 3.00 
112 ORDER pe gee ean eg a 16.80 
RP OERIOT Sati Mr eee te an Pe ia sulle s kre drew iw eles bv amiegs & 14.90 
Pe ADOT SIO LE DOV aI OT OC rr. eos Gite bare Sewanee acs era's, 7.45 
Pee DOL fot NOLse) 1066 oo. foc eae cs bee ec cles eeeewles 7.45 
REtERHTIIBDC DATs CNse prayer. se— ied. a8 wise ioc ec duds b's Gbean oe's 10.00 
ete MS Ae a8 isc Pas ov c'cn. 0d whee ca vu nds $92.60 
The total cost of spraying was $5.55 per acre or 74 cents per 
acre for each application. 
The bordeaux mixture was of the 6-4-50 formula, the total 
quantity used being 4,500 gallons which is at the rate of a little 
more than 39 gallons per acre at each application. By comparing 
these figures with those given for the experiment in 1904 (Bul. 
264, p. 143) it will be seen that the quantity per acre per applica- 
tion was one-half greater than in 1904. This difference is chiefly 
the result of spraying fewer rows at a time. In 1904 eight rows 
were covered at each passage in most of the spraying, while in 
1905 the sprayer was driven over every fifth row. This also. 
accounts for the increased expense of spraying in 1905. 
7 At the time of digging the test rows Mr. Burke was selling potatoes 
in the 103d St. (New York) market at $2 to $2.25 per barrel of 170 
pounds. Allowing thirty cents per barrel for marketing, the net returns 
would be $1.70 to $1.95 per barrel which is somewhat more than sixty cents 
per bushel. 
