SELECTING AND PREPARING MATERIALS 



281 



TABLE 39 



Early Spring Treatments for Apple Pests* 

 New York Agricultural Experimental Station, Geneva 



Materials in 

 Amounts per 100 

 Gallons of Spray- 

 Mixture 



Cost 

 per 100 

 Gallons 

 of 

 Spray 

 Mix- 

 ture t 



Pest To Be Controlled 



Euro- 

 pean 

 Red 

 Mite 



San 

 Jos6 

 Scale 



Oys- 

 ter 



Scurfy 



Rosy 



Red 



Bud 



Shell 



Scale 



Aphid 



Bug 



Moth 



Scale 











Dormant Applications 



Lubricating oil, 3 gal. 



0.64 



E 



E 



P 



P 



N 



N 



P 



N 



Lubricating oil, 5 or | 



1.04 or 





E 



EI 



E 



P 



FV 



F 



E 



6 gal J 



1.27 















Tar oQ, 3 gal 



1.26 



N 



N 



F 



F 



E 



N 



P 



N 



Tar oil, 4^ gal 



1.89 



N 



N 



E 



G 



E 



N 



Ft 



N 



Tar oil, 2}4 gal. -|- 





















lubricating oil, 3 gal. 



1.70 



F 



G 



E 



E 



E 



P 



n 



N 



Dowspray Dormant 1 



1.75 to 



)v. 



VI 



E 



E 



E 



F 



E 



P 



2H to 3 gal, . . .J 



2.10 









Elgetol, 1 gal 



2.00 



VI 



VI 



E 



E 



E 



N 



E 



N 



Elgetol, 1 gal. -f lu- 





















bricating oil, 3 gal.§ 



2.65 











EI 







GI 



Breaking-Bud Applications 



Elgetol, 1 gal. 



2.00 VI 



— I — I E I N, I E 



Green- Tip Applications 



Lubricating oil, 3 gal. 





















+ nicotine, 1 pint . 



1.56 



E 



E 







G 



N 



G 



N 



Delayed Dormant Applications 



Lubricating oil, 3 gal. 





















+ nicotine, 1 pint 





















+ Bordeaux 



1.51 11 



E 



E 







G 



N 



G 



N 



Nicotine, 1 pint and 





















lime-sulfiu-,2^ gal.. 





















or wettable sulfur at 





















manufacturer's rec- 





















ommendations 



0.91 n 



N 



N 



N 



N 



G 



N 



G 



N 



* The letters represent the following control: E, excellent; G, good; F, fair; P, poor; 

 V, variable (sometimes good or excellent control, in other tests fair to poor) ; N, not suffi- 

 ciently effective to be practicable, and I, results based on insufficient evidence to be con- 

 clusive. A blank space indicates that no data are available. 



t Based on the following price per pound, pint, or gallon; Goulac or Binderine (lb.), 3 J^c; 

 lubricating oil (gal.), 20c; tar oil, 83% emulsion (gal.), 35c; nicotine sulfate (pt.), 91c; Dow- 

 spray Dormant (gal.), 70c; Elgetol (gal.), $2.00. 



t Should not be used where infestation is severe. 



§ Limited tests. Growers might test it experimentally where leaf roller, bud moth, and 

 aphid occur in the same orchard. 



U Cost of insecticide only, as fungicide cost will vary with amount of material used. 



