Spray Calendar. 173 



Blight. I. Cut out all affected branches and cankered spots 

 Pear. in fall after leaves drop cutting a little below the point where 



the bark is dark or sunken. Dress with paint or thick Bordeaux. 

 2. Cut out whenever observed during growing season, cutting two feet below 

 apparent injury if practicable. All branches should be cut 6 to lo inches below 

 point of infection; burn the parts. Leaf-blight or fruit-spot. Leaf-spot. i. Before 

 blossoms open, Bordeaux mixture; 2. After blossoms have fallen, repeat i; 3, 4, 

 etc., repeat i at intervals of 2 to 3 weeks as appears necessary. For Leaf-spot in 

 detail see Bulletin 145. Scab. See under apple. Leaf-blister or blister-mite. 

 I. Before buds swell in spring, kerosene emulsion, diluted 5 to 7 times. Psylla. 

 I. When blossoms have fallen in spring, kerosene emulsion diluted 7 or 8 times, 

 or whale-oil soap i lb. to 4 or 5 gallons of water; 2, 3, etc., at intervals of 2 to 6 

 days, repeat i until the insects are destroyed. Lime-sulfur wash or whale-oil 

 soap I lb. in i gal. will doubtless kill many old hibernating psyllas in winter. 

 See Bulletin 108. Slug. See under cherry. San Jose scale, Codling moth. See 

 under apple. 



Brown-rot. See under peach. Leaf-blight. (i. When first 

 Plum. leaves have unfolded, Bordeaux inixture); 2. When fruit has 



set, Bordeaux mixture (dilute for Japanese plums.) 3, 4, 

 etc., repeat 2 at intervals of 2 to 3 weeks, use a clear fungicide after fruit is | grown. 

 Black-knot. i. During first warm days of early spring, Bordeaux mixture; 2. 

 Repeat i when buds are swelling; 3. During latter part of May, repeat i ; 4. Repeat 



1 during middle of June (5. Repeat i in July). Cut out knots. See Bulletin 81. 

 Curculio. Some are successful with arsenical sprays, once before blossoming and 

 twice after blossoms fall; arsenate of lead and arsenite of lime have been most 

 effective; jar the trees after fruit has set, at intervals of i to 3 days during 2 to 5 

 weeks. See Bulletin 131. Plum Scale, i. In autumn when leaves have fallen, 

 kerosene emulsion, diluted 4 times; (not necessary if lime and sulfur is used; 



2 and 3 in spring, before buds open repeat i. See Bulletin 108. San Jose scale. 

 See under apple. 



Early blight, i. When vines are young, Bordeaux mixture; 

 Potato. 2 and 3, repeat i at intervals of 2 to 3 weeks (only partially 



successful). Late blight, i. When plants are 6 inches high, 

 Bordeaux mixture; 2 and 3, at intervals of i to 3 weeks, repeat i. Scab. Soak 

 uncut seed potatoes i^ hours in solution of i ounce corrosive sublimate in 8 gallons 

 water; or 2 hours in solution of ^ pint formalin in 15 gallons water. Potato-beetle. 

 When beetles first appear, very strong arsenical spray; 2 and 3, repeat i when 

 necessary. Flea-beetle. Bordeaux mixture and Paris green. 



Leaf-blight or fruit-spot. (i. AVhen blossom buds appear, 



Quince. Bordeaux mixture); 2. When fruit has set, repeat i; 3, 4, etc., 



repeat i at intervals of two weeks until fruit is | grown; if later 



treatments are necessary, ammoniacal copper carbonate. See Bulletin 80. Blight. 



As for Pear. Curculio. Jar or spray as for plum curculio. See Bulletin 148. San 



Jose scale. See under apple. 



Anthracnose. i. Before buds break, copper sulfate solution. 



Raspberry, also cut out badly infested canes; 2. When growth has com- 



Blackberry, menced, Bordeaux mixture; 3, 4, etc., repeat 2 at intervals 



Dewberry. of i to 3 weeks, avoid staining fruit by use of clear fungicide. 



(Partially successful). — Badly infested plantations should be 



rooted out. Orange-rust or yellows. Remove and destroy affected plants as soon 



as discovered. See Bulletin 100. Saw- .y. i. When first leaves have expanded, 



arsenites; 2. After 2 to 3 weeks repeat i, or apply hellebore. 



