Spray Calendar. 171 



Anthracnose, pod-rust. i. Select clean seed. Bordeaux mixture, 

 Bean. when first true leaf has expanded; 2, 3, etc., the same at short 



intervals to keep the foliage covered by the mixture. 

 T5 . Leaf-spot. i. When four or five leaves have expanded, Bordeaux 



mixture; 2,3, etc., the same every 10 to 14 days. 

 Aphis. I. Upon young plants, kerosene emulsion or whale oil 

 Cabbage and soap , i lb. to 5 gals, of water when insects are first seen; 2. 

 Cauliflower, repeat I when necessary. Black rot. i. Grow plants in clean 

 soil. Soak seed in formalin, i lb. to 20 gals, water, for 1 5 minutes; 

 guard against contamination. See N. Y. State Expt. Sta. Bulls. 232, 237. Rotate 

 infield. Cabbage-worm. i. If plants are not heading, kerosene emulsion or arsen- 

 icals: 2. Repeat i at intervals of 7 to 10 days; 3. If plants are heading, hellebore. 

 Club Root: Use lime 75 to 150 bu. per acre, i^ to 4 years before planting. Root- 

 maggot: Pour around base of plants an emulsion of i lb. soap, i gal. boiling 

 water, i pint'of crude carbolic acid. Dilute this emulsion with 30 parts of water. 

 See Bulletin 78. 



Anthracnose or spot. i. At first appearance of disease, Bor- 

 Carnation. deaux mixture thoroughly applied in fine spray; 2, 3, etc., 

 if plants are not blooming, Bordeaux mixture; ammoniacal 

 copper carbonate to avoid staining the flowers. Keep foliage covered with a 

 fungicide. Rust. Begin with healthy cuttings, spray the plants every week during 

 their life with copper sulfate solution, 2 lbs. copper sulfate to 45 gallons of water, 

 or v/ith potassium sulfide solution. Red spider. Syringe freely with clean water. 

 Keep the atmosphere of the house moist. Kerosene Emulsion. 



Early blight, late blight, i. Apply Bordeaux mixture as soon 



Celery. as the plants have become established; 2. Repeat i every two 



weeks until the plants are half or two-thirds grown; 3. Apply 



ammoniacal copper carbonate solution every 10 to 14 days, or more often if th<. 



weather is rainy. 



Black-knot. See Plum. Rot. i. When bud breaks, Bordeaux 

 Cherry. mixture; 2. When fruit has set, repeat i; (3. When fruit is 



grown, ammoniacal copper carbonate). Aphis. i. Kerosene 

 emulsion when insects appear, 2,3, repeat at intervals of 3 to 4 days if necessary. 

 Curculio. See under Plum. Leaf Blight, i . Just before blossoms open, Bordeaux. 

 2. Same after calyx falls. 3. Same 2 weeks later. Powdery Mildew. Spray with 

 Bordeaux or potassium sulfide. Slug. i. When insects appear, arsenicals or 

 hellebore; 2, 3, repeat i in 10 to 14 days if necessary. 



p, ., Leaf -spot. Ammoniacal copper carbonate at intervals of 10 



■' to 14 days, to keep the foliage protected. Rust. Treat as for 



leaf-spot; also wet the foliage as little as possible in watering 



mum. 



the plants. 



Bacterial Wilt. Distributed by striped cucumber beetles. 



Cucumber, Destroy these. Remove diseased leaves. Downy mildew. 



Melon Bordeaux mixture every 10 days, or often enough to keep the 



and Squash, foliage well covered above and below from the time the plants 



are very small until frost. Striped cucumber beetle. Keep 



plants thoroughly covered with Bordeaux mixture. Trap under shingles. See 



Bulletin 144. 



Leaf-blight. i. When injury first appears, before the fruit 



Currant. is harvested, ammoniacal copper carbonate, to avoid staining 



the fruit; 2. After fruit is harvested, Bordeaux mixture freely 



