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The Effects of nitrogen and phosphorous sources on mycorrhizal formation and growth of Pinus kesiya Royle Ex. Gordon seedling / by Yahya Fakuara Tasimin

By:

Tasimin, Yahya Fakuara [author]

Material type: Text

TextLanguage: English Publication details: Los Baños, Laguna : 1984. Cavite State University- Main Campus,Description: 136 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

634.9 T18 1984

Online resources:

Click here to view thesis abstract and table of contents

Abstract: YAHYA FAKUARA TASIMIN, University of the Philippines at Los Banos, July 1984. The Effects of Nitrogen and Phosphorus Sources on Mycorrhizal Formation and Growth of Pinus kesiya Royle ex Gordon Seedling. Major Professor: Dr. Neptale Q. Zabala. Seedlings of P. kesiya were grown under nursery condition for a period of six months. The effects of nitrogen and phosphorus on mycorrhizal formation and growth were studied. The nitrogen sources (NaNO, , NH,NO, and urea) did not affect mycorrhizal formation as well as the growth of seedling. However, nitrogen levels (0, 50, 100 and 150 ppm) affected mycorrhizal formation with 150 ppm NH,NO, producing the highest mycorrhizal formation. Inoculation treatment affected mycorrhizal formation and growth of inoculated seedlings and were more superior to uninoculated seedlings in terms of mycorrhizal formation and seedling growth. On the contrary, inoculated seedlings were inferior to uninoculated seedlings in terms of number of roots and nitrogen content. Combination of 150 ppm NH,NO, with inoculation produced the highest mycorrhizal formation while combination of 50 ppm NH,NO, with inoculation produced the highest height and diameter increment. The phosphorus sources (rock phosphate and superphosphate) as well as phosphorus levels (0, 25, 50 and 75 ppm) did not affect mycorrhizal formation. However, phosphorus levels affected height and diameter increment with 75 ppm rock phosphate and 50 ppm superphosphate producing largest hei ht and diameter increment. Inoculation treatment affected mycorrhizal formation and growth with inoculated seedlings exhibiting superiority to uninoculated seedlings in terms of mycorrhizal formation and growth. In contrary, inoculated seedlings were inferior to uninoculated seedlings in terms of number of roots. Combination of phosphorus levels and inoculation affected mycorrhizal formation with 25 ppm rock phosphate combined with inoculation producing the highest mycorrhizal formation. Based on the results of this study, the following recommendations could be given: firstly, in terms of planting material production it is advisable to apply either 150 ppm NH,NO, or 25 ppm rock phosphate; and secondly, further study is needed on the effect of nitrogen or phosphorus sources on mycorrhizal formation and growth under different soil pH and the effect of mycorrhizal formation on the chemical properties of grassland soil.

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Title notes ( 4 )

Holdings
Item type	Current library	Collection	Call number	Materials specified	URL	Status	Notes	Date due	Barcode
Theses / Manuscripts	Ladislao N. Diwa Memorial Library Theses Section	Non-fiction	634.9 T18 1984 (Browse shelf(Opens below))		Link to resource	Room use only	T-1423		00002308

Thesis (Ph.D. - - Forestry) University of the Philippines, College, Laguna.

Includes bibliographical references.

YAHYA FAKUARA TASIMIN, University of the Philippines at Los Banos, July 1984. The Effects of Nitrogen and Phosphorus Sources on Mycorrhizal Formation and Growth of Pinus kesiya Royle ex Gordon Seedling. Major Professor: Dr. Neptale Q. Zabala. Seedlings of P. kesiya were grown under nursery condition for a period of six months. The effects of nitrogen and phosphorus on mycorrhizal formation and growth were studied.

The nitrogen sources (NaNO, , NH,NO, and urea) did not affect mycorrhizal formation as well as the growth of seedling. However, nitrogen levels (0, 50, 100 and 150 ppm) affected mycorrhizal formation with 150 ppm NH,NO, producing the highest mycorrhizal formation.

Inoculation treatment affected mycorrhizal formation and growth of inoculated seedlings and were more superior to uninoculated seedlings in terms of mycorrhizal formation and seedling growth. On the contrary, inoculated seedlings were inferior to
uninoculated seedlings in terms of number of roots and nitrogen content.

Combination of 150 ppm NH,NO, with inoculation produced the highest mycorrhizal formation while combination of 50 ppm NH,NO, with inoculation produced the highest height and diameter increment.

The phosphorus sources (rock phosphate and superphosphate) as well as phosphorus levels (0, 25, 50 and 75 ppm) did not affect mycorrhizal formation. However, phosphorus levels affected height and diameter increment with 75 ppm rock phosphate and 50 ppm superphosphate producing largest hei ht and diameter
increment.

Inoculation treatment affected mycorrhizal formation and growth with inoculated seedlings exhibiting superiority to uninoculated seedlings in terms of mycorrhizal formation and growth. In contrary, inoculated seedlings were inferior to uninoculated seedlings in terms of number of roots. Combination of phosphorus levels and inoculation affected mycorrhizal formation with 25 ppm rock phosphate combined with inoculation producing the highest mycorrhizal formation.

Based on the results of this study, the following recommendations could be given: firstly, in terms of planting material production it is advisable to apply either 150 ppm NH,NO, or 25 ppm rock phosphate; and secondly, further study is needed on the effect of nitrogen or phosphorus sources on mycorrhizal formation and growth under different soil pH and the effect of mycorrhizal formation on the chemical properties of grassland soil.

Submitted to the University Library 01/07/1994 T-1423