SPRAY SCHEDULE FOR SMALL HOME 
ORCHARD | 
(Prepared by Dr. Albert Hartzell and Dr. S. E. A. 
McCallan of the Boyce Thompson Institute for Plant 
Research, Inc., Yonkers, N. ye) 
APPLE 
Dormant Spray 
(The treatment is made after the buds have begun to 
swell, but before they show green at the tips. ) 
Material: Oil emulsion or miscible oil. 
Control: Scale. 
Delayed Dormant Spray 
(When the leaves of the blossom buds are out about 
Y4 to 2 inch.) 
Material: 2 gal. lime-sulphur. 
3 Ib. hydrated lime. 
1 pint nicotine sulphate. 
Water to make 100 gallons. 
Control: Scab, Aphids, Red Bug, Bud Moth. 
Pre-blossom Spray 
(Before the blossom buds open.) 
Material: 2 gal. lime sulphur. 
3 Ib. hydrated lime 
3 Ib. lead arsenate. 
Water to make 100 gallons. 
Control: Scab - Leaf roller. 
Calyx Spray 
(When 75% of the petals have fallen.) 
Material: 5 Ib. wettable sulphur. * 
3 Ib. hydrated lime. 
3 lb. lead arsenate. 
1 pt. nicot:ne sulphate. 
Water to make 100 gallons. 
Control: Codling Moth, Scab, Aphids, Fruit blotch. 
Post Calyx Spray 
(Ten days after calyx **) 
Material: 5 Ib, wetted sulphur * 
3 Ib. hydrated lime. 
3 Ib. lead arsenate. 
Water to make 100 gallons. 
Control: Curculio, Codling Moth, Aphids, Scab, Black 
Rot, Bitter Rot. 
First Apple Maggot or second Codl'ng Moth Cover Spray. 
6 weeks after calyx about June 25 to July 1. 
Material: Repeat Post Calyx Spray. 
Control: Apple Maggot, Codling Moth, Scab, 
Second Apple Maggot or third Codling Moth Cover Spray 
Not later than July 15th. 
Material: Repeat Post Calyx Spray. 
Control: Apple Maggot, Codling Moth, Scab. 
PEAR + 
Dormant Spray 
(Early in the spring when the flies appear on the twigs 
and are ready to lay eggs and the buds are not yet 
showing green.) 
Material: Lubricating oil emulsion diluted to contain 3% 
of actual oil. 
Control: Pear Psylla, Scab, Blister Mite, Scale. 
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