' Plants as Affected by Insufficient Light. 149 



241. The Electric Light has been found useful as a 

 supplement to .the scanty sunlight of short, early-winter 

 days, in forcing certain vegetables 

 and flowers. 



242. Insufficient Pruning Prevents 



the formation of Fruit-Buds in or- 

 chard trees by restricting light and 

 thus reducing food formation (58). 

 Compare Fig. 65, which shows a fruit 

 branch of the apple tree grown where 

 exposed to abundant sunlight, with 

 Fig. 66, showing one grown in par- 

 tial shade.* 



243. Blanching of certain vege- 

 tables, such as celery, endive, car- 

 doon and sea kale is practiced by gar- 

 deners to render them more tender 

 and delicate. It is effected by exclud- 

 ing the light from the parts desired 

 for use, until the chloropyll (57) 

 mostly disappears, by banking the 



Fig. 65. Fig. 66. 



plants with earth or inclosing them fig. 65. Fruit branch 



^ of apple grown In 



in paper or in drain-tile. Very close ^1™*^^^* A^n*ith< 

 planting is sometir 

 promote blanching. 



_,. . .. .. ,,gro^nln partlai 



planting is sometimes practiced to shade. 



F, fruit -buds; L, 

 leaf-buds. (After 

 Kinney. ) 



* See Bulletin No. 37, Rhode Island Agricultural Experiment Station. 



