UNFAVORABLE LIGHT AND WIND 



141 



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 orchard 

 trees by restricting light and thus re- 

 ducing 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 partial shade. 1 



243. Blanching of certain vegeta- 

 bles, such as celery, endive, cardoon 

 and sea kale, is practiced by garden- 

 ers to render them more tender and 

 delicate. It is effected by excluding 

 the light from the parts desired for 

 use, until the chlorophyll (57) mostly 

 disappears, by banking the plants with 

 earth or inclosing them in paper or in 

 drain-tile. Very close planting is some- 

 times practiced to promote blanching. 



PLANTS AS AFFECTED BY EXCESSIVE 

 WIND 



244. Preventive measure's. Dam- 

 age to trees and other plants by exces- 

 sive wind is too familiar to need notice, 

 except to suggest preventive meas- 

 ures. 



1 See Bulletin No. 37, R. I. Agri. 



FIG. 65. 



FIG. 66. 



FIG. 65. Fruit 



branch of apple 



grown in abundant 



light. 

 FIG. 66. Another 



grown in partial 



shade. 



F, fruit-buds ; L, 



leaf-buds. 



Exp. Sta. 



