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Growth and fiber morphology of abaca (musa textilis nee) ratoons as influenced by plant density and N level / by Nestor M. Gloria

By:

Gloria, Nestor M [author]

Contributor(s):

Quintana, Ernesta G [adviser]

Material type: Text

TextLanguage: English Publication details: Los Baños, Laguna : 1982. Cavite State University- Main Campus,Description: 134 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

633.571 G51 1982

Online resources:

Click here to view thesis abstract and table of contents

Abstract: GLORIA, NESTOR W., University of the Philippines at Los Banos. August, 1982, Growth and Fiber Morphology of Abaca (Musa textilis Nee) Ratoons as Influenced by Plant Density and N Level. Major Professor: Prof. Ernesta G. Quintana An old abaca plantation was subjected to butcher harvest as a rejuvenation process. The subsequent ratoons were evaluated in terms of growth and fiber dimensions as influenced by plant density and nitrogen level. Replants served as checks in determining the merits of ratooning. Ratoons emerged approximately 13 days earlier than replants. Ratoons were not severely damaged by pests regardless of density and N levels of application. Slight damage caused by slug caterpillar and corm " weevil was observed, Generally, ratoons had more rapid vegetative growth than replants regardless of plant density and N level, although it appeared that the application of 100 kg N/ha favored height and girth increment after a period of 12 months. Unlimited ratoons exhibited better performance over ratoons at controlled density. At advanced stages, however, a reduction in girth showing characteristics of "taguiltils" was observed in unlimited ratoons. In other gross morphological characteristics like petiole length, leaf blade length and width, ratoons at any density manifested superior performance over the replants, Furthermore, ratoons also had Significantly higher fresh and dry matter weight of stalk and leaves than the replants. Leaf N content significantly increased with increased N application during the 6th month but not after 12 months. Plant density did not affect leaf N content. Generally, N application did not significantly affect fiber cellular dimensions, however, the fiber dimensions of ratoons at any density were significantly bigger than those of replants.

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Holdings ( 1 )
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	633.571 G51 1982 (Browse shelf(Opens below))		Link to resource	Room use only	T-1557		00002388

Thesis (M.S. - - Horticulture) University of the Philippines, College, Laguna.

Includes bibliographical references.

GLORIA, NESTOR W., University of the Philippines at Los Banos. August, 1982, Growth and Fiber Morphology of Abaca (Musa textilis Nee) Ratoons as Influenced by Plant Density and N Level. Major Professor: Prof. Ernesta G. Quintana

An old abaca plantation was subjected to butcher harvest as a rejuvenation process. The subsequent ratoons were evaluated in terms of growth and fiber dimensions as influenced by plant density and nitrogen level. Replants served as checks in determining the merits of ratooning.

Ratoons emerged approximately 13 days earlier than replants. Ratoons were not severely damaged by pests regardless of density and N levels of application. Slight damage caused by slug caterpillar and corm " weevil was observed,

Generally, ratoons had more rapid vegetative growth than replants regardless of plant density and N level, although it appeared that the application of 100 kg N/ha favored height and girth increment after a period of 12 months. Unlimited ratoons exhibited better performance over ratoons at controlled density. At advanced stages, however, a reduction in girth showing characteristics of "taguiltils" was observed in unlimited ratoons.

In other gross morphological characteristics like petiole length, leaf blade length and width, ratoons at any density manifested superior performance over the replants, Furthermore, ratoons also had Significantly higher fresh and dry matter weight of stalk and leaves than the replants.

Leaf N content significantly increased with increased N application during the 6th month but not after 12 months. Plant density did not affect leaf N content.

Generally, N application did not significantly affect fiber cellular dimensions, however, the fiber dimensions of ratoons at any density were significantly bigger than those of replants.

Submitted to the University Library 10/26/1993 T-1557