Nitrogen and phosphorus dynamics in foliage and twig of pitch pine and japanese larch plantations in relation to fertilization

Yowhan Son, Im Kyun Lee, Soung Ryoul Ryu

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Seasonal foliage and twig nitrogen (N) and phosphorus (P) dynamics were determined for 40-year-old pitch pine (Pinus rigida Mill.) and Japanese larch (Larix leptolepis Gord.) plantations established on similar soils in central Korea. Also, the effects of three levels of N plus P fertilizers on N and P retranslocation were evaluated. In general, Japanese larch had significantly higher current foliage N and P concentrations than pitch pine, and N and P concentrations were higher in foliage than those in twigs for both study species. Foliage N and P concentrations were highest in mid-growing season and lowest in autumn whereas twig N and P concentrations increased during foliage senescence, suggesting that twig served as a storage tissue. We did not find differences in foliage N and P retranslocation between pitch pine and Japanese larch; current foliage N and P retranslocation of the control trees were 35% and 56% for pitch pine, and 39% and 59% for Japanese larch, respectively. There were no consistent patterns in foliage and twig N and P retranslocation following fertilization.

Original languageEnglish
Pages (from-to)697-710
Number of pages14
JournalJournal of Plant Nutrition
Volume23
Issue number5
DOIs
Publication statusPublished - 2000

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science

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