Distribution and Mobility of Foliar-Applied Boron (10B) in Citrange Rootstock Under Different Boron Conditions

  • Xiuwen Wu
  • Muhammad Riaz
  • Lei Yan
  • Cuncang JiangEmail author


Although foliar-applied boron (B) could rapidly and effectively relieve B deficiency of plants, the distribution and mobility of foliar-applied B in citrange, an important rootstock of citrus, are poorly understood. This study aimed to investigate the transportation and variation of B allocation in different parts of citrange under different B conditions by spraying 10B on the lower mature leaves of citrange rootstock for 8 weeks. The results indicated that foliar B on lower mature leaves led to higher 10B abundance and 10B concentration in different parts of plants. Compared with the low-B plants, 10B abundance in stems, lower, and upper mature leaves of medium-B plants increased 23.95, 7.22, and 8.33% respectively. Moreover, under low- and medium-B conditions, abundance and percentage of 10B were higher in roots than that in other tissues after foliar application 10B. Meanwhile, abundance and percentage of foliar-10B in stems and old leaves under B-insufficient condition were much lower than that of B-sufficient condition. Furthermore, the 10B allocation rate was the highest in roots under the two different B conditions. There were higher 10B allocation rates in new leaves and lower mature leaves, and lower 10B allocation rates in stems and upper mature leaves in medium-B plants comparing with that in low-B plants. All these results suggest that foliar-applied 10B on lower mature leaves could be translocated to every part of citrange rootstock, with the majority distributed in roots, and the mobility of foliar B from lower mature leaves to other parts was different between low- and medium-B treatments, leading to a significant variation in translocation rate for each part of citrange.


Foliar-applied 10Translocation Mobility Citrange rootstock 



Low boron

LB + F

Low boron + foliar-B fertilization


Medium boron

MB + F

Medium boron + foliar boron fertilization


Boron obtained from foliar fertilization with H 3 10 BO3


Allocation rate of 10B obtained from foliar boron


Lower mature leaves


Upper mature leaves


New leaves



This work was supported by the National Natural Science Foundation of China (41271320) and the Fundamental Research Funds for the Central Universities (2017PY055).

Compliance with Ethical Standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • Xiuwen Wu
    • 1
  • Muhammad Riaz
    • 1
  • Lei Yan
    • 1
  • Cuncang Jiang
    • 1
    Email author
  1. 1.Microelement Research Center, College of Resources and EnvironmentHuazhong Agricultural UniversityWuhanPeople’s Republic of China

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