Nutrient accession in mahogany (Swietenia macrophylla King) plantation via open and incident precipitation

Issue Date

7-1991

Abstract

The nutrient transfer in a 60-year old mahogany (Swietenia macrophylla King) plantation in the experimental forest of the College of Forestry, University of the Philippines at Los Baños (UPLB) was monitored to determine the nutrient accession via precipitation. The pH values of incident precipitation indicated that a cation exchange mechanism was completed at the broken edge of the cuticle layer of leaves due to acidity. High pH in open precipitation was due to rainfall dilution effect. Concentration of total nutrients in stemflow is 50%. the rest is divided equally for throughfall and open precipitation. Of all the nutrients, calcium exhibited the highest concentration while potassium has the least. With respect to nutrient amount, stemflow differed significantly against throughfall and open precipitation in all elements except for potassium due to its immobility while phosphorus dominated all the pathways. In the same vein, potassium registered the highest amount that were retained/intercepted followed by phosphorus and nitrogen.

Source or Periodical Title

Sylvatrop: the technical journal of Philippine Ecosystems and Natural Resources

ISSN

0015-0022

Volume

1

Issue

2

Page

33-44

Document Type

Article

Frequency

semi-annually

Physical Description

illustrations; graphs; tables

Language

English

En – AGROVOC descriptors

SWIETENIA MACROPHYLLA; PRECIPITATION; PLANT NUTRITION; NUTRITION; NUTRIENTS

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