Abstract
Weight losses of potatoes during storage were closely related to the product of average water vapor pressure deficit of the air between the tubers and the duration of storage in weeks. Shortly after harvest, the water loss per cm2 skin area per hour per mm Hg VPD was five to seven times as high as later in the storage period. Temperature, through its influence on respiration did not appreciably affect weight loss, but had in several cases a clear effect on specific gravity. In those cases the relations between specific gravity and either weight loss or the product of storage duration and VPD were close only if the influence of storage temperature was eliminated.
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