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Abstract
The influence of temperature on the growth and development of deciduous tree fruits has been inadequately investigated. In most cases only general field observations have been reported. The temperature conditions prior to and during such general observations are variable and cannnot be repeated precisely. To control temperature, limb sleeves and small chambers have been used to cover portions of limbs (2,3). Information from such devices is of limited value since they do not preclude the influence of the rest of the tree.
Abstract
Fruit growth measurements in several orchards, from 1959 to 1968 have been used to prepare a table for predicting final harvest size of ‘Bartlett’ pears. At 60 days from full bloom, final fruit diameter to within ⅛ inch can be accurately predicted 83% of the time. The nearer to harvest the sample is taken, the more accurate the harvest size prediction. Temperatures above 80° and below 55°F appear to reduce pear fruit growth.