38 NEW YORK STATE MUSEUM 



southern edge of the orchard and at the southeast corner there 

 is an old orchard which was pastured all last summer and is 

 probably not a serious disturbing factor so far as infestation 

 by codling moth is concerned. 



Plots 2 and 3 were located on two rows of Baldwins near 

 the top of a hill, Northern Spys lying on either side and being 

 used as east and west barrier trees. Plot 2 consists of 6 very 

 imiform trees. Plot 3 was farther north on the same row and 

 included, among the experimental trees, two which were not 

 up to standard so far as fruiting or size is concerned. These 

 two were not considered, the estimates being restricted to 

 the 6 satisfactory ones. The experimental trees of plot i were 

 remarkably vigorous and heavily fruited. Plot 4 was in thjC 

 southeast portion of the experimental area next the old orchard 

 mentioned above [sec pi. 3]. Plot 5 was just west and a little north 

 of plot 4, lying very nearly between the latter and plot 2. Plot 6 

 w^as just north of plot 5. Plots 5 and 6 have two rows of 

 Spys as barriers on the west. The latter plot, namely 6, has 

 also two rows of Spys as barriers on the north. Two check 

 trees, x and y were near the northwest corner of plot 4 [sec 

 pi. 3]. Plot I was northeast of the check trees. 



First application. May 20. Plots 5 and 6 were sprayed with 

 the Bordeaux nozzles, one on each line of hose. The western 

 experimental trees of both plots 5 and 6 were treated perhaps 

 a little more thoroughly than the eastern trees of the said 

 plots. Plot 4 had the experimental trees only sprayed with 

 Bordeaux nozzles. Friend nozzles being used on the barrier 

 trees. Plot i was sprayed throughout May 20 with Friend 

 nozzles, plots 2 and 3 were similarly sprayed May 21 between 

 II a. m. and 3.15 p. m., plot 3 being sprayed last and completed 

 about I hour before it began to rain. The Bordeaux nozzle, with a 

 pressure of 150 pounds, gave a stiff, penetrating spray which 

 repeatedly passed the stamens and collected in the lower cav- 

 ity. This was true, not only of blossoms where the stamens 

 had witliered somewhat, but also of those still bearing petals. 

 The first two experimental trees next the road were sprayed 

 with 125 to 150 pounds pressure and all the barrier trees, the 

 remainder of the experimental trees in plot 2 and all of the experi- 

 mental trees in plot 3 were sprayed with a pressure of 145 to 150 

 pounds. There was a perceptible difference in the penetration of 

 the calyx cup, the higher pressure being the more satisfactory, there 



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