18 



In General. 



Collect and destroy these plants as soon as the crop has 

 been gathered. 



Grape. 



Anthracnose, Black Rot, Mildews. 

 Spray with Bordeaux mixture (No. 136) as soon as any of 

 these diseases appear. 



Flea Beetles. 

 Attack the buds, and later the leaves. Spray with arsenate 

 of lead 4 pounds, water 50 gallons, and repeat if necessary. 

 No. 19 or 20 may be used to advantage. 



Rose Bug. 

 Hand picking. 



In General. 



Spray before the buds open with No. 19 or 20. After the 

 leaves have developed spray 'with No. 136. Repeat this after 

 the fruit has set, or use it with No. 3, if insects are present. 



Greenhouse Plants. 

 Control diseases by keeping the houses in the best condition. 

 When empty, fumigate with No. 23 or 28. 



Burns and Wilts. 

 To avoid lettuce top burn, low temperatures on cloudy days 

 and at night, — 35 degrees to 45 degrees at night. Cucumber 

 wilt is caused by too little light and air, and too high tem- 

 perature. 



Rusts. 



Select healthy stock. Remove rusted parts. Keep water 

 off the leaves, at least in cloudy weather, watering the leaves 

 only on bright mornings, when they will quickly dry. 



Mildews and Leaf Spots. 



In general, caused by too much moisture and too little light 

 and air. For cucumber anthracnose and rose mildew paint 

 the heat pipes occasionally with sulfur and oil. 



