170 Report of THE BOTANICAL DEPARTMENT OF THE 
ings. All were of the same variety, namely, Mills Prize. The 
accompanying table shows the yield: 
Taste XII—SuHowInG YIELDS IN EXPERIMENT No. 34. 





F : Gain per acre 
ROW. How sprayed. Yield per row.| Yield per acre. due to spraying. 
Lbs. Bu. lbs. | Bu. lbs, 
AS OF cscs Mies oe 2 (50 gals.) + 3 (100 gals.)... 545 305 WP fof ca 0 46 
verre: (orate 2 (50 gals.) + 2 (100 gals.) ... 5254 | 294 22 | 49 51 
OR ec ict e NGtsprayved.er octet caeliet 4364 | 244 31) — — 
Cre Bee et OOO alah )o7roe 5 ¢ Gea ae aie 476 266 28 | 21 67 
Dae eee (50 alse). cece earns 492 275 36 | 31 5 
There was noticeably more rot on the unsprayed row than on 
the sprayed but not much in any case. 
The results in this experiment again emphasize the importance 
of thorough spraying. It should also be noted that Row D out- 
yielded Row C sprayed in the same way. This is another exam- 
ple of the oft-observed fact that a sprayed row adjacent to an 
unsprayed row does not yield as well as the second sprayed row. 
Mr. Buchanan’s potatoes were planted June 8; consequently, 
they were still growing when frost came, September 21. Had it 
not been for the frost the gain due to spraying would have been 
considerably larger. We examined this experiment August 12 
at which time the plants were very large and there were already 
traces of late blight on unsprayed rows, but it appears that 
the disease did not work as rapidly here as in some other locali- 
lies. The attack of blight was only moderately severe. 
Another season Mr. Buchanan will plant early and spray thor- 
oughly. The market price of potatoes at digging time was 50 
to 55 cents. 
EXPERIMENT NO. 35. 
Conducted by John Jeannin, Jr., West Sand Lake, Rensselaer 
County. One acre of Green Mountain potatoes, in two plats, 
were sprayed three times with a five-gallon compressed-air 
sprayer like the one used in the Sliters Experiment (see page 
128; also Plate XVI, fig. 1). In each plat two rows 100: feet 
long were left unsprayed. The total expense of spraying was 
4.68, the items being as follows: 
97 gallons bordeaux mixture..... PEERS Sats st 1) - $0 68 
Se pounds arsenate, of lead ateZUGey ic...) ./emyenven Este 1 60 
ihshonrs lpborat Loci. om. eS belt af SRNR ees ae ade 2 40 

