BUDS 



67 



FIG. 48 JAPANESE PLUM 

 The branch shows one 

 year's growth from a to b at 

 which latter point the ter- 

 minal bud died and a lateral 

 branch c developed 24 inches 

 long the following season. 

 At the same time two other 

 laterals on the underside of 

 the branch also developed 1 

 and 2 inches long respec- 

 tively. The twigs / are two 

 years old, the annual rings 

 being shown at /. Twigs g 

 are one year old. Fruit spurs 

 are seen at ft. The fruit buds 

 are largely in threes. Hence 

 the need of fruit thinning. 



FIG. 49 CURRANT BRANCHES OF 



VARIOUS AGES 



A, four-year cane which has twice had its 

 leader injured a, broken; b, girdled. Branch 

 c is two years old, the dividing point being 

 at c. Branch d, also two years old, just above 

 the upper cluster of blossom buds at d. 

 Notice blossom buds on two-year spurs at e. 

 The buds on the one-year growths at / 

 should produce spurs and bloom buds for the 

 following year's fruit. B, one-year cane pro- 

 duced from the base of the bush. Two or 

 three such canes should be allowed to grow 

 each year to take the place of the four-year- 

 old wood removed each year. C, two-year- 

 old branch with bloom buds on older part, and 

 branch (spur) buds on the younger. 



fruit buds. Hence knowledge of the time such buds are 

 formed and developed will lead to knowledge of the 

 factors that influence fruit bud formation and are con- 

 ducive or detrimental to bud development. With these 

 assumptions an enormous amount of work was conducted 

 by Mr. Drinkard to determine, (1) the period of fruit bud 

 formation by field observations; (2) the gross develop- 

 ment of floral parts by microtome sections covering the 





