88. REPORT OF THE BOTANICAL DEPARTMENT OF THE 
THE ODESSA EXPERIMENT. 
This experiment was conducted by O. 5. Benson, Odessa, Schuy- 
ler County. One field of 2% acres was sprayed five times on the 
following dates: June 26, July 2, 18, August 6 and 17. Another 
field of five acres was sprayed on the same dates and once be- 
sides on August 25. 
The bordeaux mixture used was of the 6-4-50 formula, the 
water being obtained mostly from the outlet of a ditch at one 
corner of the five-acre field. 
The sprayer was a cheap, home-made outfit consisting of a 
one-horse, two-wheeled cart carrying a Pomona spray pump 
mounted in a fifty gallon barrel. One man drove and worked 
the pump while another sat on the rear of the cart and directed 
the spray nozzles which were attached at the ends of two short 
pieces of hose.‘ In the first four sprayings one nozzle per row 
was used and in the last two sprayings two nozzles per row. 
In each field a strip of three rows was left unsprayed but 
treated three times with paris green in water to control “ bugs.” 
In both fields arsenite of soda was used with the bordeaux in 
the first spraying, but as the “-bugs”’ were not satisfactorily 
controlled paris green was the poison used during the remainder 
of the season. On the five-acre field it was applied three times 
with bordeaux and once in water, while on the 2%-acre field it 
was applied twice with bordeaux and once in water. “ Bugs” 
injured the unsprayed rows no more than the sprayed rows. 
Neither flea beetles nor early blight entered into this experi- 
ment. Because both fields were situated on rather low ground 
and nearly level, it was expected that there would be a severe 
attack of late blight if the weather conditions were at all favor- 
able and such was actually the case. The unsprayed rows were 
severely injured and the sprayed ones also suffered slightly. The 
increased yield of the sprayed rows was due entirely to protec- 
tion against late blight. 
The items of expense for spraying five acres six times and 
2% acres five times and making one extra application of paris 
green on both fields were as follows: 
\ 
" Instead of having the nozzles held in the hands they might have been 
fastened to the cart and considerable expense for labor saved. 
