New York AGRICULTURAL EXPERIMENT STATION. 239 
THE GREENWICH EXPERIMENT. 
Conducted by P. C. Billings, Greenwich, N. Y., who sprayed 
8 acres of potatoes on three different dates, July 1, 18 and 31. 
The last ‘spraying was a double one, i. e., the field was gone 
over twice. On Aug. 13 six rows each side of the check (three 
rows 931 ft. long) were given an additional spraying. Ac- 
cordingly, the test rows were sprayed 5 times while the total 
expense, $35.58, covers the spraying of 8 acres 4 times and 
about 0.8 acre once. The sprayer used was a two-horse, 6-row 
“ Aroostook ” carrying one nozzle per row. In the first spray- 
ing, 4-4-50 bordeaux was used; in the others, 5-5-50 bordeaux, 
Paris green, one pound to 50 gallons, was used with the bor- 
deaux in the first four sprayings. The check rows were treated 
with paris green three times—July 1, 15 and 51. There was 
no blight and scarcely any damage by flea beetles. The plants 
suffered only from tip burn and leaf hoppers. Mr. Billings states 
that there was no contrast between sprayed and unsprayed 
rows—it was apparent that the spraying was of no benefit. 
The expense of spraying 8 acres 4 1/9 times was as follows: 
beaeibe copper sulphate. @ 96.0... cic es cee bees da cs $13 .86 
ERIC ACs Ln Mame oa TAM od Li A MMR a een ta die oe 1.54 
mba BREE P ECCT (0) PAC) a bc.8 gs vies ates) oe eee Uy § iad ofa eieed wag 7.68 
Reem iriaty: tL bOT (i) ZUCM Ides toler its ates OAL IV Dy PPE 3.00 
Mme ADOT 10D tenn (SUG es 64. lak 8 sie 's cick tha ais ede lg's Gometa 4.50 
Wear.of sprayer... Jf...... PA IRIE TINIE ESOT SL Een 5.00 
SPL eh amare MeCN eee Ate he sue esha ¥ Gt Galas ie ces sans $35.58 
The test rows were of the variety Gold Coin. They were 
931 ft. long by 3 ft. wide. The yields were as follows: 
Two sprayed rows, 851 Ibs.==110.6 bu. per acre. 
Middle unsprayed row, 439 Ibs.=114.1 bu. per acre. 
Loss, 3.5 bu. per acre. 
At 66 cts. per bu. 3.5 bu. have a value of $2.31. Adding to 
this the expense of 5 sprayings, $5.40 per acre, we have a total 
loss of $7.71 per acre. 
