The seasonal changes of the constituents of young apple trees (Part 1) total sugars and starch

Introduction

Considering the cultivation of perennials like fruit crops from the standpoint of plant nutrition as well as cultural practices, there is a great difference from annual crops; the former is expected to increase the yield of fruit on the one hand, and to maintain the tree vigour on the other. It may be said that the cultural practices of fruit crops are all directed to a single aim, that is keeping harmony between these contrary requirements. Therefore, to understand the seasonal changes of the constituents of fruit trees in accordance with the seasonal growth cycle is the fundamental of fruit culture.