Seasonal changes in carbohydrate and moisture content in needles of balsam fir (<i>Abies balsamea</i>)

Abstract

Starch, total sugar, fructose, glucose, sucrose, raffinose, crude fat, and moisture contents were determined for current and 1-year-old needles at about 2-week intervals throughout 1968. Seasonal fluctuations in moisture and carbohydrate content of each age of needles are described, compared, and related to seasonal changes in carbohydrate production and use.