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Effects of defoliation, runner removal, and fertilization on tuber yield of gabi (Colocasia esculenta L. Schott) / by Sergio Eder Abit.

By:

Abit, Sergio Eder [author]

Material type: Text

TextLanguage: English Publication details: Los Baños, Laguna : University of the Philippines, 1978.Description: 62 pages : illustrations ; 28 cmContent type:

text

Media type:

unmediated

Carrier type:

volume

Subject(s):

DDC classification:

633.68 Ab5 1978

Online resources:

Click here to view thesis abstract and table of contents

Abstract: ABIT , SERGIO EDER , University of the Philippines at Los Banos, October, 1978. Effects of Defoliation, Runner Removal, and Fertilization on Tuber Yield of Gabi ( Colocasia esculenta L.) Schott, Major Professor : Dr. Arturo C. Alferez . This experiment was conducted at the Philippine Root Crop Research and Training Center, Visayas State College of Agriculture, Baybay, Leyte under lowland condition during wet season 1977 to determine the effects of the removal of runners, degree of defoliation and varying levels of complete fertilizer on tuber yield, tuber size, leaf area index, nurnber of leaves and plant height of gabi. Light defoliation treatment did not affect the leaf area index but increased plant height at maturity, size of tubers and tuber yield compared to the undefoliated plants, and those subjected to heavy defoliation, Heavy defoliation on the other hand resulted to a significant decrease in plant height and tuber yield. The removal of runners from the mother plant markedly enhanced better growth of plants and significantly increased tuber yield. Larger tubers were developed where runners were removed from the mother plants. Tuber yield and other agronomic characters significantly increased with increasing levels of complete fertilizer applied from 50 to 150 kg/ha of each N, P20n5 and K,6. There was an increase of about 2 tons of tubers for every 50 kg/ha of NPK applied as the rate of fertilizer was increased from 50 kg to 150 kg per hectare.

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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	633.68 Ab5 1978 (Browse shelf(Opens below))		Link to resource	Room use only	T-1124		00002147

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

Includes bibliographical references.

ABIT , SERGIO EDER , University of the Philippines at Los Banos, October, 1978. Effects of Defoliation, Runner Removal, and Fertilization on Tuber Yield of Gabi ( Colocasia esculenta L.) Schott, Major Professor : Dr. Arturo C. Alferez .

This experiment was conducted at the Philippine Root Crop Research and Training Center, Visayas State College of Agriculture, Baybay, Leyte under lowland condition during wet season 1977 to determine the effects of the removal of runners, degree of defoliation and varying levels of complete fertilizer on tuber yield, tuber size, leaf area index, nurnber of leaves and plant height of gabi.

Light defoliation treatment did not affect the leaf area index but increased plant height at maturity, size of tubers and tuber yield compared to the undefoliated plants, and those subjected to heavy defoliation, Heavy defoliation on the other hand resulted to a significant decrease in plant height and tuber yield.

The removal of runners from the mother plant markedly enhanced better growth of plants and significantly increased tuber yield. Larger tubers were developed where runners were removed from the mother plants.

Tuber yield and other agronomic characters significantly increased with increasing levels of complete fertilizer applied from 50 to 150 kg/ha of each N, P20n5 and K,6. There was an increase of about 2 tons of tubers for every 50 kg/ha of NPK applied as the rate of fertilizer was increased from 50 kg to 150 kg per hectare.

Submitted to the University Library April 29, 1988 T-1124