150 Report of the Botanist of the 



the expense of applying paris green to potatoes. 



In some parts of the State, particularly on Long Island, many 

 farmers apply paris green to their potatoes in dry form by means of 

 the Leggett Powder Gun.^^ 



Desiring to learn how much it costs to apply poison in this way 

 the Station made arrangements with W. A. Fleet, Cutchogue, Long 

 Island, to keep an account of the expense on his farm. 



It should be stated that Mr. Fleet is a successful potato grower 

 and one who does all of his work in a thorough, business-like manner. 

 He has used the Leggett Powder Gun several years and understands 

 its use thoroughly. These statements are made in order that it may 

 be understood that the test reported below is a fair one. 



In the season of 1903 Mr. Fleet treated 18 acres of potatoes, eleven 

 acres of early potatoes and seven acres of late ones, with " Green 

 Arsenoid,"^'^ for " bugs." The poison was applied in dry form, un- 

 diluted, at the rate of about two pounds per acre with a Leggett 

 Powder Gun. On the early potatoes two applications were oufficient. 

 They were made: ist June 16-25 ; 2d July 1-8. On the late potatoes 

 a third application was required; namely, on July 15-20. As to the 

 effectiveness of the treatment Mr. Fleet reports as follows : — " The 

 treatment was not thoroughly effective. ' Bugs ' were kept in check 

 so they did not eat the vines much, but were not all killed at any 

 one of the three applications." The expense account is as follows : — 



84 pounds " Green Arsenoid," at I3^c $11 34 



65 hours' labor, at 15c 9 75 



Total $21 09 



The expense per acre for each application was 49 cents. 



'* Manufactured by Leggett & Bro., 301 Pearl St., New York, N. Y. 



""Green Arsenoid" is a substitute for paris green. Manufactured by the 

 .\dler Color & Chemical Works, 100 William St., New York, N. Y. For 

 its chemical analysis see Bulletin 190 of this Station, page 289. 



