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Effects of type of inocula and phosphate levels of mycorrhizal formation and initial growth of Pinus merkusii Jungh et de Vriese seedlings in two types of soils / by Suhardi

By:

Suhardi [author]

Material type: Text

TextLanguage: English Publication details: Los Baños, Laguna : 1984. Cavite State University- Main Campus,Description: 87 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

634.9 Su1 1984

Online resources:

Click here to view thesis abstract and table of contents

Abstract: SUHARDI, University of the Philippines at Los Bafios, September 1984, Effects of Type of Inocula and Phosphate Levels on Mycorrhizal Formation and Initial Growth of Pinus merkusii Jungh et de Vriese Seedlings in Two Types of Soils. Major Professor: Dr. Reynaldo E. de la Cruz The objectives of this experiment were to determine the effects of soil type, superphosphate levels, inocula types and the combined effects of soil and superphosphate level, soil and inoculum type and soil, superphosphate level and inoculum type that favors the initial growth of Pinus merkusii. Seeds were obtained from Bandung, Indonesia, Soils were collected from Caliraya, Kalayaan, Lagunaand UPLB College of Forestry, Forest Experimental Plantation, College, Laguna. Seedlings were inoculated with either spores of fungi tentatively identified as Pisolithus tinctorius and Rhizopogon sp. or mycorrhizal pine soil one month after germination and then fertilized with superphosphate two months after. Soil type significantly affected diameter growth, root/shoot ratio and mycorrhizal root formation. Growth of P. merkusii seedlings was better in Caliraya soil than in UPCF soil. Phosphate levels did not affect any of the growth parameters. Type of inoculum significantly affected height, diameter, total biomass, root/shoot ratio, number of short roots and mycorrhizal root formation. Uninoculated seedlings showed significantly greater growth than all inoculated seedlings, but in terms of mycorrhizal formation, mycorrhizal pine soil was best. Combination of soil type and superphosphate levels significantly affected diameter growth. Caliraya soil fertilized with 4, 6 and 8 grams superphosphate per seedling gave more diameter growth than UPCF soil fertilized with any level of superphosphate. Combination of soil type and inoculum type significantly affected total biomass, root/shoot (R/S) ratio, number of short roots and mycorrhizal root formation. However, combination of soil types, superphosphate levels and inoculum type did not affect any of the growth parameters. It is concluded that a poor soil like Caliraya soil a promoted better diameter growth, root/shoot ratio and mycorrhizal root formation of P. merkusii than a fertile soil like UPCF soil; that superphosphate levels used in the experiment did not affect the growth of P. merkusii seedlings 7 and that mycorrhizal pine soil was a better inoculum than the pure culture inoculum of Pisolithus tinctorius and Rhizopogon sp.

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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 Su1 1984 (Browse shelf(Opens below))		Link to resource	Room use only	T-1319		00002259

Thesis (M.S. - - Forestry : Forest Biological Sciences) University of the Philippines, College, Laguna.

Includes bibliographical references.

SUHARDI, University of the Philippines at Los Bafios, September 1984, Effects of Type of Inocula and Phosphate Levels on Mycorrhizal Formation and Initial Growth of Pinus merkusii Jungh et de Vriese Seedlings in Two Types of Soils. Major Professor: Dr. Reynaldo E. de la Cruz

The objectives of this experiment were to determine the effects of soil type, superphosphate levels, inocula types and the combined effects of soil and superphosphate level, soil and inoculum type and soil, superphosphate level and inoculum type that favors the initial growth of Pinus merkusii.

Seeds were obtained from Bandung, Indonesia, Soils were collected from Caliraya, Kalayaan, Lagunaand UPLB College of Forestry, Forest Experimental Plantation, College, Laguna. Seedlings were inoculated with either spores of fungi tentatively identified as Pisolithus tinctorius and Rhizopogon sp. or mycorrhizal pine soil one month after germination and then fertilized with superphosphate two months after.

Soil type significantly affected diameter growth, root/shoot ratio and mycorrhizal root formation. Growth of P. merkusii seedlings was better in Caliraya soil than in UPCF soil. Phosphate levels did not affect any of the growth parameters.

Type of inoculum significantly affected height, diameter, total biomass, root/shoot ratio, number of short roots and mycorrhizal root formation. Uninoculated seedlings showed significantly greater growth than all inoculated seedlings, but in terms of mycorrhizal formation, mycorrhizal pine soil was best.

Combination of soil type and superphosphate levels significantly affected diameter growth. Caliraya soil fertilized with 4, 6 and 8 grams superphosphate per seedling gave more diameter growth than UPCF soil fertilized with any level of superphosphate.

Combination of soil type and inoculum type significantly affected total biomass, root/shoot (R/S) ratio, number of short roots and mycorrhizal root formation. However, combination of soil types, superphosphate levels and inoculum type did not affect any of the growth parameters.

It is concluded that a poor soil like Caliraya soil a promoted better diameter growth, root/shoot ratio and mycorrhizal root formation of P. merkusii than a fertile soil like UPCF soil; that superphosphate levels used in the experiment did not affect the growth of P. merkusii seedlings 7 and that mycorrhizal pine soil was a better inoculum than the pure culture inoculum of Pisolithus tinctorius and Rhizopogon sp.

Submitted to the University Library 01/07/1994 T-1319