tSk national lursenimait 
FOR GROWERS AND DEALERS IN NURSERY STOCK 
The National Nurseryman Publishing Co., Incorporated. 
Vol. XX. ROCHESTER, N. Y., MARCH, 1912 No. 3 
GENERAL PLANS FOR ORCHARD SPRAYING 
Cornell Bulletin No. 283 
I. Donnant season before leaf buds open but just as they 
are swelling: 
a. Lime-sulfur as a contact spray for 
San Jose scale 32 to 33° Beaume 1-8. 
Blister mite 32 to 33° Beaume i-ii. 
b. Add arsenate of lead, 2 pounds to 50 gallons, to the 
lime-sulfur as a poison for 
Bud-moth 
Cigar case-bearer 
II. After leaf buds open but before blossoms open, i. e., 
when just beginning to show some pink. Watch weather 
and get spray on before rain, not after: 
a. Lime-sulfur solution, 32° Beaume 1-40, or Bordeaux 
3-4-50, for apple scab (the fungus). 
b. Arsenate of lead, 2-3 pounds to 50 gallons, added to 
lime-sulfur or Bordeaux as a poison for 
Bud-moth 
Cigar case-bearer 
Canker-worm 
This application should never be omitted during cold, 
rainy seasons. 
III. After petals have fallen, beginning when about two- 
thirds have fallen. Have spray on before rains come. This 
is important. 
a. Lime-sulfur, 32° Beaume 1-40, or Bordeaux, 3-4-50- 
for 
Apple scab 
Leaf spot 
b. Arsenate of lead, 2-3 lbs. to 50 gallons, used with 
lime-sulfur or Bordeaux for 
Codling-moth 
Canker-worm 
Bud-moth 
This is the most important of all the applications. 
IV. Ten days to two weeks later. Before rain period: 
a. Lime-sulfur, 32° Beaume 1-40, or Bordeaux, 3-4-50, 
for 
Apple-scab 
Leaf-spot 
b. Arsenate of lead, 2-3 lbs. to 50 gallons, used with 
lime-sulfur or Bordeaux for 
Codling-moth 
Canker-worm 
V. Eight to nine weeks after blossoms fall: 
Same as IV for late scab infections and late attacks of 
codling-moth. In most seasons this application is not 
necessary. 
If aphis appears, spray before leaves curl with whale-oil 
soap, I lb. to 6 gallons, or kerosene emulsion diluted with six 
parts of water, or use one of the tobacco extracts. 
THE PEACH ORCHARD* 
I. Dormant season before the leaf buds begin to swell: 
a. If scale is not to be combated, spray with lime-sul¬ 
fur, 32° Beaume 1-15, or Bordeaux, 4-4-50, or copper sulfate, 
2 lbs. to 50 gallons of water, for 
Peach leaf-curl 
Any of these will be effective if properly applied. Spray 
from both directions to coat every bud, being sure to apply 
before buds have begun to swell at all. 
b. Lime-sulfur, 32° Beaume 1-7^, for 
San Jose scale 
This will also control peach leaf-curl. 
II . About the time the calyces or shucks are shedding 
from the young fruit: 
a. Self-boiled lime-sulfur, 8-8-50, with arsenate of 
lead, 2 lbs. to 50 gallons, for 
Scab 
Brown-rot 
As this is rather early for the scab and rot the self-boiled 
lime-sulfur may be omitted, using merely 
b. Arsenate of lead, 2 lbs. to 50 gallons of water, for 
Curculio 
If the self-boiled lime-su 1 fur is omitted, add to each 50 
gallons of water milk of lime made by slaking 2-3 lbs. of good 
stone lime. This will tend to counteract any caustic action 
of the arsenate of lead. 
III. Two or three weeks later or about one month after 
petals fall: 
a. Self-boiled lime-sulfur, 8-8-50, for 
Scab 
Brown-rot 
b. Add 2 lbs. arsenate of lead for 
Curculio 
IV. About one month before fruit ripens: 
a. Self-boiled lime-sulfur, 8-8-50, for 
Brown-rot 
b. Omit arsenate of lead. 
♦Taken from U. S. D. A. Bureart of Entomology Giro. 120:6-7. 
