When exporting to Froogle the 'Description' field contains only <![CDATA[]]>. I have both the short and long description fields filled in, but for all products the description field does not include either of these.
However, keep in mind that products are not things that are directly orderable, Product Variants (SKUs) are. Look at Managing products for more info. Product variants (not products) are exported to froogle. Products have short and long description fields. And product variants have only desciption field that is exported to froogle.