28 HENRY LEUTHARDT NURSERY 

Spray No: 4—Summer Spray 
Lenk (Two or three weeks before the fruit ripens) 
Miaterial: Wettable Sulphur and Water. 
Control: Brown rot and scab. : 
PEAR’ SPRAY 
Spiay No. 1—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—3% oil emulsion; or 1-15 miscible oil. 
Control: Scale. 
Spray No. 2—Pre-Blossom Spray 
(When the blossom buds begin to separate in the 
cluster. ) 
Material: Lime, Sulphur and Water. 
Control: Scab 
Spray No. 3—Calyx Spray 
(As the last of the petals are falling.) 
Material: Lime Sulphur, water, Lead Arsenate. 
Control: Coddling Moth, leaf-roller, green fruit 
worm, or scab. 
Spray No. 4—Summer Spray (in July) 
Material: Nicotine Sulphate and Soap. 
Fire Blight—Shoots and branches blacken as if done by fire. 
Very serious. Spray at full bloom with 1-3-50 Bordeaux. Cut 
out canker, prune out diseased branches and destroy infected fruit 
spurs. 
Psylla—Leaves turn brown, drop, from sucking of tiny cicada- 
like insects; sooty mold in honeydew. 
Material: Dormant oil before buds break; lead arsenate and 
nicotine in calyx spray, and 3 weeks later. 
Blister Mite—Brownish blisters on underside leaves. 
Material: Dormant oil spray. 
Pear Thrips—Buds shrivel in very early spring. 
Material: Nicotine-oil spray when thrips appear. 
Slug—Slimy green larvae skeletonize leaves. 
Material: Lead Arsenate when slugs are first seen. 
CHERRY SPRAY 
Scale Dormant spray, lime-sulphur or oil, as for apple. 
Cherry Aphid—Tar-oil dormant spray while buds are brown, 
0. nicotine sulphate at: green.tip stage. 
Brown Rot—Wettable sulphur: (1) As husks begin to split 
from small fruits; (2) 10 days later. 
Curculio—Add 1 tbs. lead arsenate, 5 tbsps. lime to each gal. 
of sulphur spray used for brown rot. 
Leaf Spot—Turn under fallen leaves: spray foliage as for 
brown rot plus lime-sulphur (6 tbsps. per gal.), when fruit first 
shows color and immediately after harvest. 
PLUM 
Scale—Dormant Oil Spray. 
Black Knot—Cut out knots 4 ins. below swelling. 
Brown Rot, Curculio, Leaf Spot—See Cherry Spray. 
BORERKIL—An effective Method for controlling Borers. It 
is an excellent insecticide. This paste contains Nicotine and is 
injected into the wound. You may order Borerkill from the fol- 
lowing address direct: Lethelin Products Company, Inc., Mount 
Vernon, New York. 
