EXPERIMENTS ON THE APPLE WITH SOME NEW FUNGICIDES. 5 



The orchard in which this series of plats was located was planted 

 in strips of four rows each of Ben Davis, Yellow Newtown, a and York 

 Imperial trees. Each plat consisted of a row running across the 

 varieties so as to include 4 Ben Davis, 4 Yellow Newtown, and 2 York 

 Imperial trees. The Ben Davis was known to be very badly affected 

 by russeting, the Yellow Newtown moderately affected, and the York 

 Imperial notably immune to this type of injury. 



SERIES II. 



The blossoms being somewhat scant on the block on the home farm 

 and the trees not especially strong and productive, a duplicate series 

 (Series II) was arranged in Mr. Lup ton's Baker orchard in a block 

 consisting entirely of Ben Davis trees. This second series was car^ 

 lied out on the same plan, with the exception of plats 8 and 9, which 

 were left out, as they were not considered especially promising when 

 this series was started. The trees in both blocks were 14 years of age. 

 Some trees were missing in the plats of Series I. Each plat in Series 

 II consisted of 4 Ben Davis trees rather heavily fruited, each carrying 

 several barrels of apples. 



SUPPLEMENTAL SERIES. 



A supplemental series, in which the self-boiled lime-sulphur and 

 the copper-sulphid mixture were used on the Ben Davis variety, 

 was carried out in the orchard of Mr. Stewart Bell. Another supple- 

 mental test on the York Imperial and the Ben Davis was carried 

 out in the orchard of Mr. Phil Gold, comparing self-boiled lime- 

 sulphur and standard Bordeaux mixture, the dates of treatment 

 being approximately the same as in Series I and II. 



DATES OF APPLICATION OF THE SPRAYS. 



The sprays were applied with an ordinary hand barrel pump, a noz- 

 zle with a fairly small opening which produced a tolerably fine mist- 

 like spray being used. The first application was made May 1 1 and 12, 

 shortly after the petals had fallen, while the calyxes were still open. 

 The second application was made June 11 and 12, just a month later; 

 in fact, a week later than was intended. The third application was 

 made July 19. 



The first application was made in time to fill the calyx cups with 

 the arsenate and in good season to catch early infections of cedar rust 

 and leaf-blight. This is usually also a timely application to protect 

 from apple scab, though not thoroughly reliable in a bad season. It 



« This variety is known also as Newtown Pippin, and in Virginia as Albemarle Pippin, 

 or simply Pippin. 

 [Cir. 58] 



