142 Diseases of Greenhouse Crops 



Control. As soon as the disease makes its appear- 

 ance the foliage should not be syringed, but kept 

 dry. Spraying with 3-5-50 Bordeaux is recom- 

 mended. 



Root Knot, see Nematode, p. 28 (fig. 22). 



Eggplant (^Solanum melongena) 



Cultural Considerations. Eggplants require as 

 much heat as cucumbers. The night temperature 

 should never run down below 60 degrees F. The 

 day temperature may safely be maintained at 80 

 degrees or more, provided, however, sufficient ven- 

 tilation is allowed. The best soil for greenhouse 

 eggplants is a light sandy soil containing plenty of 

 organic matter. Raised benches with bottom heat 

 is preferred for winter forcing. The eggplant does 

 not thrive under an excess of water. To obtain 

 marketable fruit, the blossoms must be hand pol- 

 linized to insure fertilization. 



Diseases of Eggplants 



Eggplants are subject to numerous diseases. 

 Southern Wilt, see Tomato, p. 185. 

 Damping Off, see Pythium, p. 17. 



Fruit Rot 



Caused by Phomosis vexans (Sacc. and Syd.). 

 Symptoms. Fruit rot attacks all parts of the plant 



