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SCHOOL AND HOME GARDENING 



of arsenate of lead to ten gallons of water should be applied 

 as early as the insects begin their work on the plants. The 

 spray should be repeated every ten days or two weeks until 

 the plants have nearly completed their growth. 



If Bordeaux mixture is used in this spray instead of water, 

 two objects are gained. The insects are kept in control better 

 and the potato blight diseases are largely prevented. 



Flea beetles are destructive on a number of garden plants. 

 They are sometimes worse on potatoes than the potato beetles 

 themselves. They also badly affect cucumbers and other vine 



Fig. 143. — To protect from cut worms, rolls of paper or tin cans without bot- 

 toms may be left around tomatoes and other plants when transplanted to the 

 garden. 



plants, and frequently do great damage to egg-plants and 

 others. Dusting with various materials, such as road dust, 

 wood ashes, air slacked lime, or a mixture of these, will 

 usually drive them away temporarily. 



PLANT DISEASES. — In the notes regarding insects 

 several plant diseases have been mentioned. Potato blight 

 (Fig. 144) is a very serious disease which should be prevented. 

 Tomato blight is sometimes quite serious in middle and south- 

 ern states. Celery blight is very commonly so bad as to pre- 

 vent the successful growth of the crop. Potato sc.ab is prob- 



