SOLANACEOUS CROP PROJECTS 75 



Unequal moisture content of the soil is the most common pre- 

 disposing factor bringing on the disease. It is therefore advisable 

 to regulate watering as carefully as possible. A light mulch or 

 frequent cultivation tends to regulate the moisture content of the 

 soil and lessen this trouble. 



1. What other crop do some of the diseases of tomato aSect? 



Why? 



2. Why do foliage diseases reduce the amount of fruit ? 



3. What diseases are controllable by spraying with Bordeaux ? 



4. How should winter blight be treated ? In what way may the 



seeds of tomatoes be selected to eliminate disease ? 



5. What conditions are favorable to the spread of the fungi 



causing " damping off " ? 

 SH: 14-21. 



6. What effect do steaming and formaldehyde treatment have upon 



these organisms? 

 SH: 460-465. 



7. What relationship exists between climate and certain tomato 



8. Of what value is sanitation in the control of disease f 



SH: 16-17 



9. What can he done to lessen the amount of blossom end rot? 



SH : 263-264. 



20. Harvesting and marketing. — Tomatoes are always better 

 in quality if allowed to become fully ripe before they are picked. 

 This is possible for the home table, but when the fruits are hauled 



