ISHS Acta Horticulturae 69: II International Symposium on Pear Growing
FRUIT SET OF ANJOU AND GROWTH OF BARTLETT (WILLIAMS) PEARS |
| Author: | Max W. Williams |
| Abstract:
Fruit set and development of pears has been studied for several years at the USDA Agricultural Research Service laboratory at Wenatchee, Washington. When CCC is applied at 4 to 6 weeks after bloom at a concentration of 1000 to 1500 ppm, vegetative growth is reduced by 1/3 to ½ during the year of treatment and fruit set the following spring is increased by 20 to 50%. After 2 years of treatment set is increased by 150 percent. Fruit growth of Bartlett (Williams) pears has been followed for several years to determine the effect of fruit removal on final size of remaining fruit. When 2 or more fruit are set on a single spur, the increase in fruit growth after thinning to 1 fruit per spur is negligible, less than 3 percent in circumference. Thus, it is unnecessary to space thin or reduce crop to 1 fruit per spur. | |
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