@article{HUANG:310004,
      recid = {310004},
      author = {HUANG, Yanfei and CHEN, Guifen and HUANG, Yuyi and XIONG,  Liumei and LIU, Bin},
      title = {Contents of Main Nutrients in Leaves of ‘Jianyang Juyou’},
      journal = {Asian Agricultural Research},
      address = {2020-10-20},
      number = {1812-2021-601},
      month = {Oct},
      year = {2020},
      abstract = {[Objectives] This study aimed to understand and master the  nutritional characteristics of ‘Jianyang Juyou’ growing in  southern Guangxi, with a view to providing a theoretical  basis for the rational fertilization of local orchards.  [Methods] The leaves of 3-year-old ‘Jianyang Juyou’ were  sampled according to the phenological characteristics, and  the dynamics in the contents of macronutrients and main  trace elements N, P, K, Ca, Mg, Fe, Zn and B in the leaves  were analyzed. [Results] The average contents of N, P and K  in the leaves of ‘Jianyang Juyou’ were in the order as N >  K > P. Among them, the content of N reached the highest  during the flowering period and then decreased; K  maintained a high content around the fruit enlargement  period; the Ca content of leaves is significantly greater  than that of Mg, and the peak value of Ca content appeared  during the flowering and color change periods; the Mg  content increased from the germination stage to the late  fruit enlargement stage, while decreased in the color  change stage; the average contents of main trace elements  in the leaves ranked as Fe > B > Zn; the Fe content  gradually increased from the germination stage to the  physiological fruit drop stage, and slowly decreased after  the fruit enlargement; the Zn content peaked in the  physiological fruit drop period and fruit maturity period;  and the B content of the leaves was 81.6-87.2 mg/kg during  the flowering period, the early period of fruit  enlargement, the late period of fruit enlargement, and the  color change period. [Conclusions] During the phenological  period, the leaves of ‘Jianyang Juyou’ had a higher demand  for N, and the peak absorption period was mainly  concentrated from the germination period to the early  period of fruit enlargement; the demand for K was second  only to N, and the peak absorption period was concentrated  in the early stage of fruit enlargement to the mature  stage; and the demand for P was minimal. In the production  of ‘Jianyang Juyou’ Mg played an important role in  promoting budding and blooming, preserving flowers and  fruits and promoting fruit enlargement, so attention should  be paid to the application of Mg fertilizer before the  color change period. During the flowering period, the early  period of fruit enlargement, the late period of fruit  enlargement, and the color change period, B fertilizer  could be appropriately increased by soil application or  foliar spraying. Due to the large fluctuation of Zn content  in leaves and small mobility of Zn, it could be  supplemented quickly by spraying on the leaf surface before  the physiological fruit drop period and fruit maturity  period.},
      url = {http://ageconsearch.umn.edu/record/310004},
      doi = {https://doi.org/10.22004/ag.econ.310004},
}