Some carbohydrate and nitrogen constituents of alternate-bearing sugar prunes associated with fruit bud formation

Abstract

Studies of the relation of carbohydrate and nitrogen fractions to the fruiting habits of sugar prunes (Prunus domestica) are reported. Bearing trees, as compared with non-bearing, had higher total nitrogen before May 1 and lower after that date and were consistently lower in starch content both in tops and roots. Starch content and moisture showed an inverse relationship. Increase of N and reducing sugars in the fruit was regular, with sugars increasing greatly when the fruit began to ripen. || ABSTRACT AUTHORS: O. E. Street