New York AGRICULTURAL EXPERIMENT STATION. 181 
At the time of the first spraying, August 2, there were traces 
of blight (Phytophthora infestans) all over the field, but even on 
the unsprayed rows it made slow progress until after Septem- 
ber 1. | 
On September 8 notes were made on the condition of the 
different series. On the check rows in the east half of the experi- 
ment field there was considerable blighted foliage, while check 
rows in the west half of the field were but slightly affected. 
Throughout the experiment the rows sprayed with soluble bor- 
deaux were somewhat less affected than the check rows adjacent, 
but much more affected than the rows sprayed with soda bor- 
deaux or those sprayed with lime bordeaux, on which the foliage 
was nearly perfect. There seemed to be no difference between 
Series [III and IV. 
On September 21 there was still but little blight in the west 
half of the experiment, while in the east half the check rows 
were mostly dead. The soluble bordeaux rows were appreciably 
better than the check rows but much inferior to the two bordeaux 
series. | 
On September 29 the check rows were practically dead through- 
out the experiment. Soluble bordeaux rows were but little 
better, being all dead over the east half of the experiment and 
with but little green foliage in the west half. The two bordeaux 
series were about equal, with probably three-fourths of their 
foliage in good order; but from this date on they deteriorated 
rapidly and were finally. killed by frost October 6. 
YIELDS. 
The potatoes were dug by hand October 24 and 25. The prod- 
uct of each series was thrown onto a large table and carefully 
sorted, by the writers, into marketable, rotten and small. The 
yield_by series is Shown in the accompanying table. 
Taste XIV.—YIELD By SERIES IN EXPERIMENT wiTH DirreRENT Kinds or 







BorpDEAUX. 
YIELD PER SERIES. YIELD PER ACRE. 
SERIES. pals PRE abet PY ate RY Be EG A. Oe EE Moe Sk Gr 
Marketable. Rotten. | Small. | Marketable. | Rotten.| Small. 
nt The baw Lhe Bat Wee Bee 
Ng Oheckics hte. chavcleeetene 667 36 84 | 107 29 5 48 |] 13 32 
II Soluble bordeaux. .... 735 88 87 | 118 Zi. |p A4e see 14 1 
III Soda bordeaux........ 9874 10 62 | 159 9 Leo 7 ee 0 
IV Lime bordeaux....... 1091 264 69 | 175 50 4 26|10 48 
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