The Nitrogen Nutrition of The Peach Tree I. Seasonal Changes in Nitrogenous Constituents in Mature Trees

Abstract

Seasonal changes in the concentration of total nitrogen, free amino acid nitrogen, arginine, and glutamine plus asparagine in flower buds, flowers, fruit, leaves, roots, new shoots, and2-3-year-old shoots of 25-year-old peach trees have been studied over an annual cycle.