ONE-SPRAY METHOD FOR CODLING MOTH, ETC. 



105 



THE CODLING MOTH. 



Table XVI shows the results of treatments of Plats I, II, and III, 

 compared with the unsprayed plat (Plat IV) as to injury from the 

 codling moth. 



Table XVI. — Number of sound and wormy apples for each tree from lime-sulphur, 

 Bordeaux, one-spray, and unsprayed plats . Wichita, Kans., 1911. 



PLAT I. LIME-SULFHUR DEMONSTRATION. 



PLAT II. BORDEAUX DEMONSTRATION. 



PLAT III. ONE-SPRAY METHOD. 



PLAT IV. UNSPRAYED. 



Wormy . 

 Sound". . 



Total 



Per cent sound. 



By again comparing the one-spray method (Plat III) with the 

 commercial lime-sulphur plat (Plat I), as has been done in the fore- 

 going experiments, it will be noted that Plat I shows 95.28 per cent 

 of fruit free from codling-moth injury as against 84.16 per cent free 

 from this insect on Plat III. Plat IV, the unsprayed plat, shows 

 only 30.20 per cent fruit free from codling-moth injury. Thus the 

 commercial lime-sulphur demonstration plat shows an increase of 

 sound fruit over the unsprayed plat of 65.08 per cent, while the one- 

 spray plat shows an increase of 53.96 per cent over the unsprayed 

 plat. The number of apples counted on the four plats, respectively, 

 were 20,545, 21,334, 9,745, and 18,506, making a total of 70,130 for 

 the four plats. One point in favor of the demonstration plat is that 



