THE DOWNY MILDEWS 225 



Downy Mildews 



1. Which of these diseases have you known to be present in your 

 neighborhood? 



Downy Mildew or Late Blight of the Potato. 



Downy Mildew of this Tomato. 



Downy Mildew of the Lima Bean. 



Downy Mildew of the Onion. 



Downy Mildew of Cucurbits. 



Downy Mildew or Brown Rot of the Grape. 



2. What preventive measures are used against these diseases in your 

 neighborhood ? 



3. Make sketches of leaves affected by the disease in the case of such 

 of these as you find. 



4. Read Fanners' Bulletin gi. 



