New YorkK AGRICULTURAL EXPERIMENT STATION. 127 
The test rows were dug by hand on October 3. Since the 
rows were so long and Mr. Clark very busy, it was decided to dig 
and weigh only 300 feet of each variety. In each variety the 
vield was taken of the middle two unsprayed rows and of the 
second sprayed row on either side with the following results: 
Green Mountain: Two sprayed rows, 490 Ibs. marketable tubers. 
Green Mountain: Two unsprayed rows, 58045 lbs. marketable 
tubers. 
Yield per acre, sprayed, 197 bu. 38 lbs. marketable tubers. 
Yield per acre, unsprayed, 205 bu. 6 Ibs. marketable tubers. 
White Giant: Two sprayed rows 27014 Ibs. marketable tubers. 
White Giant: Two unsprayed rows, 268 Ibs. marketable tubers. 
Yield per acre, sprayed 109 bu. 6 Ibs. marketable tubers. 
Yield per acre, unsprayed, 108 bu. 6 Ibs. marketable tubers. 
Average yield per acre, sprayed, 153 bu. 22 lbs. marketable 
tubers. 
Average yield per acre, unsprayed, 156 bu. 36 lbs. marketable 
tubers. 
Loss per acre, 3 bu. 14 lbs. marketable tubers. 
The average yield of culls (small tubers only) was 334 bu. 
per acre on the sprayed and 714 bu. on the unsprayed. 
The rotten tubers were not weighed. There were none at all 
in the variety White Giant and only a few in the Green Moun- 
tain. 
Owing to late planting, the plants were in full foliage on 
September 21 when frost came. Had there been time for the 
plants to mature the yields would have been larger. 
The items of expense of spraying the sixteen acres were as 
follows: | 
121 pounds copper sulphate at 10 cents.............. $1 
2 10 
PU GOSRIIING rl elo CON sate teas siete ev sete si cine ve 78 
P2,pounds paris green at-20 cents... 02.8 oe as 2 40 
24 hours’ labor for team at 25 cents............... 6 00 
Pe Nourse labor {Or man atl: Cents... os 6. ieee ow o's 3 00 
Ree UMECHEIBES LLY CL teehee Fe iso so wins Seale te a ate tan ns 4 00 
Sohn Re a lee eas aie | ne NR, ieee Ch 28 88 
OR I MGAS OCDE SULA V ITE DCT ISCO. . eo ueidg ic os a + ve euler $1 80 
peta verincre, LOE reach Spray Oe os). ees tee see ee 45 
