, Volume 9, Issue 3, pp 158–164 | Cite as

Alternate bearing influences annual nutrient consumption and the total nutrient content of mature pistachio trees

  • Patrick H. Brown
  • Steven A. Weinbaum
  • Geno A. Picchioni


The influence of alternate bearing on nutrient utilization and total tree nutrient content was investigated in mature pistachio (Pistacia vera L. cv Kerman trees). Removal of N, P and Zn in fruit and abscised leaves of cropping (‘on’) trees averaged 5, 6, and 2 times, respectively, the removal in abscised leaflets of the non-fruiting, ‘off’ year trees. One hundred and thirty-five kg N, 131 kg K, 86 kg Ca, 39 kg Mg and 18 kg P per hectare were removed in fruits and abscised leaves in ‘on’ year trees. Tree nutrient contents and, presumably, the size of nutrient storage pools in dormant trees varied between ‘on’ and ‘off’ years. There was 22% and 14% more N and P, respectively, in dormant trees following ‘off’ than ‘on’ years. The greater N and P accumulation in ‘off’ year trees is depleted in support of the large fruit demand for N and P during ‘on’ years. In contrast to N and P, there was greater K and Ca accumulation in perennial tree parts during ‘on’ years than during ‘off’ years. The greater K accumulation in perennial tree parts and approximately 30% greater removal of K in annual organs during ‘on’ than ‘off’ years suggests that K uptake could be 4 times higher in ‘on’ year trees than in (non-cropping), ‘off’ year trees.

Key words

Nutrient storage Remobilization Pistacia vera 


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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • Patrick H. Brown
    • 1
  • Steven A. Weinbaum
    • 1
  • Geno A. Picchioni
    • 2
  1. 1.Department of PomologyUniversity of CaliforniaDavisUSA
  2. 2.Department of Agriculture, Science, Technology, and EducationLouisiana Technical UniversityRuftonUSA

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