LABORATOEY MANUAL OF HORTICULTURE 



least four varieties. Describe the difference between a branch 

 bud and a leaf spur. 



2. Draw at least three fruit spurs, including the branch, nat- 

 ural size, and four inches in length. What difference do you 

 note externally between the branch bud and the fruit bud ? Is 



there any difference in size, 

 shape, or position of the branch 

 bud and the fruit bud ? Describe 

 fully. How are the buds con- 

 structed ? Study carefully the 

 differences between the leaf spur 

 and the fruit spur. How does 

 the bud on the leaf spur differ 

 from the bud found on one-year- 

 old wood ? 



3. Tear the buds apart, and 

 draw a separate scale from both 

 the fruit bud and the branch 

 bud. Describe any difference 

 between the scale found on the 

 branch bud and that found on 

 the fruit bud. 



4. Now with a very sharp 

 knife make a longitudinal and 

 a cross section of a branch bud 

 and of a fruit bud. Make a 

 separate drawing, at least one 

 inch in length, of each. Can 

 you detect any flowers or em- 

 bryonic fruit ? Describe the 

 difference as seen in a cross 



section of both the fruit bud and the branch bud. Describe any 

 varietal differences observed from your study. 



THE PEAR (Pyrus communis and Pyrus sinensis) 



Study the pear in the same way as the apple. Varieties sug- 

 gested : Bartlett, Seckel, Sand pear, President, Kieffer, Anjou, 

 Angouleme. 



1. Make drawings, natural size, and four inches in length, 

 showing both the fruit spurs and the leaf spurs of at least four 



[68] 



FIG. 15. Branch buds and fruit buds 

 of the pear 



Note the fruit spurs and leaf spurs 



