113 



pared as usual and nicotine sulfate, 40 per cent, can be added, 

 the 50 gallons of arsenate of lead spray taking the place of 

 the 50 gallons of water given under the directions for pre- 

 paring the nicotine sulfate, 40 per cent. 



Lime-sulfur Wash and Nicotine Sulfate. — This combination 

 is rarely used, but can be prepared, if desired, by adding one- 

 half pint of nicotine sulfate, 40 per cent, to the 50 gallons of 

 lime-sulfur. The soap usually added to the nicotine sulfate 

 must not be added in this case. 



SPRAY SCHEDULE FOR THE APPLE. 



First Application. — Time: Just as the buds are opening. 

 This is known as the " delayed-dormant spray," and now takes 

 the place of the application formerly made when the tree was 

 wholly dormant. What to use: Lime-sulfur, lead arsenate and 

 nicotine sulfate (winter strength) as given under the heading 

 " Combined Insecticides and Fungicides," page 112. For: San 

 Jose scale, aphids, bud moth; scab, and possibly effective against 

 some other diseases. 



Second Application. — Time: When the buds first show 

 pink but before they open (the "cluster-bud spray"). What to 

 use: Lime-sulfur, lead arsenate and nicotine sulfate (summer 

 strength) as given under the heading "Combined Insecticides 

 and Fungicides," page 112. For: Aphids, bud moth, tent cat- 

 erpillar, red bug, brown-tail moth, gypsy moth, curculio; scab, 

 and possibly other diseases. 



Third Application. — Time: As the petals fall or within a 

 week after falling begins; never when the tree is in actual 

 blossom. This is called the "calyx spray" because at this 

 time the petals are gone and the calyx is wide open. What to 

 use: The same as for the second application. For: Codling 

 moth, curculio, red bug, aphids, brown-tail moth, gypsy 

 moth; scab (this and the second applications are probably 

 the most important in the control of scab), fruit-spot, black- 

 rot and leaf-spot. 



Fourth Application. — Time: Plan to complete this spraying 



