Phosporous and nitrogen uptake as affected by mycorrhizal association and acid phosphatase activity in plants grown under marginal soil conditions

Date

6-1977

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Percy B. Sajise

Abstract

Legaspi, Benjamin Antonio Cu, College of Sciences and Humanities, University of the Philippines at Los Banos, June, 1977. Phosphorous and Nitrogen Uptake as Affected Mycorrhizal Association and Acid Phosphatase Activity in Plants Grown Under Marginal Soil Conditions.

Adviser: Dr. Percy E. Sajise

Plants indigenous to various types of environmental conditions were subjected to enzyme assay for acid phosphatase. Of these plants, the highest activities were recorded in Gliricidia sepium, Artocarpus heterophylla and Blumea balsamifera, all representative of varying ecosystems. Increasing input of inorganic phosphorous was shown to be inhibitory to acid phosphatase activity, though the trend was not statistically significant. Among grasses known to survive in the degraded soils of Carranglan, two (Themeda triandra and T. caudata) were shown to owe part of their tolerance to the presence of ectotrophic root mycorrhiza,.,. The attempt to infect rice and corn with Guinea grass mycorrhizae was unsuccessful although the fungi was shown to have survived the inoculation process. The absence of mycorrhizae may have been due to insufficient time for formation, extremely poor soil and plant health or for reasons of specificity.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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