Long-term nitrogen fertilization alters the partitioning of amino acids between citrus leaves and fruits.

ABSTRACT:

Introduction

The growth of evergreen fruit trees is influenced by the interaction of soil nitrogen (N) and leaf amino acid contents. However, information on free amino acid contents in leaves of fruiting and non-fruiting branches during long-term N fertilizer application remains scarce.

Methods

Here, a four-year field experiment (2018-2021) in a citrus orchard revealed consistently lower total N and amino acid contents in leaves of fruiting compared to non-fruiting branches.

Results and discussion

Appropriate N fertilizer application increased free amino acid and total N contents in leaves of both types of branches and fruits, but excessive amounts led to decreases. Correlation analysis showed that, in the early stage of fruit development, leaves on both types of bran

SUBMITTER: Zhao Y 

PROVIDER: S-EPMC11769974 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature