CONTENTS

Soil biological activity under different land-uses in Leyte Philippines

Carsten Marohn, Reinhold Jahn and Joachim Sauerborn

Nitrate concentration in animal manure dumping sites

Marilyn C. Sebial and Letecia S. Sonon

Community structure of arthropods in Agusan del Norte lowland ricefields

Rowena P. Varela and Lina T. Villacarlos

Biochemistry of postharvest spoilage of sweetpotato (Ipomoea batatas L.) 2. Comparison of cellulolytic enzyme production in cultures and fungi-infected sweetpotato tubers

R. C. Ray

Filipino consumer preferences for peanut butter

F. C. F. Galvez, L. S. Palomar, M. L. dL. Francisco, A. O. Lustre, and A. V. A. Resurreccion

Production of acidophilus milk enriched with purees from colored sweetpotato 9Ipomoea batatas L.) varieties

Rodney H. Perez and Julie D. Tan

CONTENTS

Effect of in vitro and in vivo induction of polyethelene glycol-mediated osmotic stress on hybrid taro (Colocasia esculenta (L.) Schott)

Manas Ranjan Sahoo, Madhumita DasGupta and Archana Mukherjee

Time of incorporation of field legume herbage and its influence on the growth and yield of upland rice

Berta C. Ratilla and Rodolfo G. Escalada

Effects of a video-mediated student-centered learning environment on students’ understanding of plant pathology principles

Erik-Ray Matthew S. Palomar and Rotacio S. Gravoso

Abundance status of flora in Mananga-Kotkot-Lusaran Watersheds, Cebu, Philippines

Justino M. Quimio

Is Heritiera fomes Buch. Ham. less adapted to the present conditions of the Indian Sundarbans compared to other mangrove species?

P. Nandy (Datta), M. Ghose, R. Spooner-Hart and S. Das

Screening of blue crab (Portunus pelagicus L.) eyestalk extracts for growth inhibition of Pectobacterium carotovorum subsp. carotovorum (Hauber et al. 1998) (Erwinia carotovora) Jones (Holland) and Ralstonia solanacearum (Yabuuchi et al. 1995) (Pseudomonas solanacearum)

E. F. Smith Julissah C. Evangelio and Bernardita P. Germano

Distribution and abundance of avifauna on the foothills of Mt. Pangasugan, Baybay, Leyte, Philippines

Maritess B. Labrador and Teofanes A. Patindol

CONTENTS

In Vitro culture of rose species (Rosa ssp.)via axillary bud growth

Zosimo S. de la Rosa Jr. and Marilyn M. Belarmino

Tomato fruit parthenocarpy and yield increase in response to chlorophenoxyacetic acid

Rosalina D. Poliquit and Misael T. Diputado Jr.

Forest carbon stock and livelihood opportunities under the CBFM Project in Midwestern Leyte Province, Philippines

Arturo E. Pasa

Reaction of abaca (Musa textilis Nee) germplasm to fusarium wilt caused by Fusarium oxysporum f.sp. cubense(E. F. Smith) Snyd. and Hans.

Lucia M. Borines, Elsie E. Salamat and Rammel B. Cardines

Survey and evaluation of promising mycoherbicides for the control of asyang [ Mikania cordata (Burm. F.)B. L. Robinson]

Lualhati M. Noriel, Yolanda C. Mangaoang, Rodolfo A. Paningbatan, Elizabeth P. Parac, and Rowena V. Salva

Chemical dynamics of a highly weathered soil under indigenous tree species in Mt. Pangasugan

Juvia P. Sueta, Victor B. Asio and Anabella B. Tulin

Amplification of health risk messages in leading Philippine newspapers

Jedess Miladel C. Nuñez and Rotacio S. Gravoso

CONTENTS

Guide to the fresh water fishes in Tubod River, Lake Danao and its outlet, Inawasan River in Leyte, Philippines

Wasantha S. Weliange, Jimmy Pogosa, Chandima Lankaadikara, Maria Leichtfried and Friedhelm Göltenboth

Toxic heavy metal biosorption by some marine bacteria isolate from the sediments of industrial effluents of Iligan Bay

Arvin C. Balala and Jose M. Oclarit

Species and structure of forests in Tampakan Highlands, South Cotabato, Philippines

Justino M. Quimio and Nelson L. Quilario

Screening of endophytic microorganisms from sweetpotato for the production of antimicrobial compounds

Julie D. Tan, Edmundo L. Sanchez, Jr., Michiko Tanaka, Taiki Katayama, Kozo Asano, and Fusao Tomita

Comparative suitability of two culture media to the in vitro growth of embryos of three coconut types

Tessie C. Nuñez

Reaction of hybrid rice and component lines to rice black bug [Scotinophara coarctata(Fabricius), Hemiptera: Pentatomidae]

Brian S. Sinangote, Reny G. Gerona, Ma. Dinah M. Reformina, Ma. Gina M. Babb and Lucia M. Borines

Influence of waterlogging stress and benzyladenine application on tomato grafted to eggplant

Mary Ann Jully B. Regis and Misael T. Diputado, Jr.

Optimization of the factors affecting the drying rate of cassava grates in a rotary drum dryer

Daniel Leslie S. Tan, Gener G. Sebial and Felix J. Amestoso

Research Note: Effect of tidal inundation on some chemical properties of soil of the Sundarbans (India)

Tanumi Kumar and Monoranjan Ghose

Abundance and prey spectrum of web spiders in rice agroecosystems of Pangasugan, Leyte, Philippines

Sarwshri Gangurde, Konrad Martin, and Maria Juliet C. Ceniza

CONTENTS

In vitro plant regeneration from flower stalk explants of Phalaenopsis amabilis (L.) Bl

Darlyn B. Posas and Marilyn M. Belarmino

Incidence of sweetpotato viruses in Central Luzon, Philippines

Erlinda A. Vasquez, Manuel K. Palomar, Lilibeth B. Laranang and Edgardo B. Barsalote

Research Note: Effects of leaf decomposition of selected exotic and native tree species on forest soil quality

Cheryl C. Batistel and Victor B. Asio

Altitudinal distribution of skinks along Cantubias Ridge of Mt. Pangasugan, Baybay, Leyte

Litlen P. Dapar and Teofanes A. Patindol

Pollen morphology and their viability of some Indian mangroves

Suparna Gupta, Arunima Ghosh, Subrata Maity and Sauren Das

Effects of mechanical factors on the peeling of cassava

Jesus G. Sagragao and Daniel Leslie S. Tan

Appropriation of the information and communications technologies by farmers and extension workers in Borongan, Eastern Samar

Ulderico B. Alviola and Editha G. Cagasan

Research Note: Optimizing wheat productivity through improved techniques for in situ moisture conservation in a micro watershed under sub-tropical region of North-Western India

Sanjay Arora and M. S. Hadda

Research Note: Coverage of climate change risks in leading Philippine newspapers

Rick-Angelo Piamonte and Rotacio S. Gravoso

Research Note: Stream water quality of a Community-Based Forest Management (CBFM)-protected watershed in Baybay, Leyte, Philippines

Arturo E. Pasa

CONTENTS

Development of bacterial blight resistant Mestizo hybrid maintainer and restorer lines through marker-aided backcrossing

Lucia M. Borines, Emilie O. Espejo, Robelyn T. Piamonte,Casiana M. Vera Cruz and Edilberto Redoña

Somatic embryogenesis and plant regeneration in purple food yam (Dioscorea alata L.)

Marilyn M. Belarmino and Jocelyn R. Gonzales

Gmelina Boom, Farmers’ Doom: Tree growers’ risks, coping strategies and options

Paulo N. Pasicolan and Damasa M. Macandog

Growing tropical tree planting stock in root trainers: Cell volume, seedling density and growing media

Sanjay Singh, N. P. S. Nain and S. P. Tripathi

Research Note: Floristic inventory of monocots in Mt. Pangasugan, Baybay, Leyte, Philippines

Pamela M. Po-Abit

CONTENTS

Food security implications of biofuel production

Teodoro C. Mendoza

Carbohydrate status of sucrose-fed broccoli head during storage and the activity and gene expression of sucrose synthase

Dewoowoogen P. Baclayon and Toshiyuki Matsui

Allelochemicals from the leaves of Tamarindus indica L.

Suparna Mandal Biswas, Nasrin Begam, Sunanda Chanda and Lalit Kumar

Antimicrobial property of chitosan and induction of systemic acquired resistance for the control of rice bacterial blight caused by Xanthomonas oryzae pv. oryzae (Swings et al.)

Ivy M. Modina, Candelario L. Calibo and Lucia M. Borines

Nutrient characteristics of aggregates and rhizosphere of a degraded upland soil: Implication for soil fertility evaluation

Ian A. Navarrete, Salfe O. Macalde, and Victor B. Asio

Morphological characterization of selected papaya (Carica papaya L.) inbreds and hybrids

Florence Lasalita-Zapico and Violeta N. Villegas

CONTENTS

Callus induction and plant regeneration of two Cuban rice cultivars using different seed explants and amino acid supplements

Maylin Perez-Bernal , Magalis Delgado Rigo, Carlos Alberto Hernandez Diaz, Maria Teresa Barcelo Avila and Raul Armas Ramos

Sweetpotato weevil pheromones and their precursors: Dose-response and structure-activity relationship in Cylas formicarius Fabr., Cylas brunneus Olivier and Cylas puncticollis Boheman

Erlinda A. Vasquez, Dietmar Schmidt, Claus Peter Zebitz, Uwe Beifuss, Iris Klaiber, Jurgen Kroschel, and Remberto Patindol

Impacts of the Techno Gabay Program in Eastern Visayas, Philippines as revealed by stakeholders’ stories of significant change

Editha G. Cagasan and Ma. Theresa H. Velasco

A review of soil degradation in the Philippines

Victor B. Asio , Reinhold Jahn, Federico O. Perez , Ian A. Navarrete and Sergio M. Abit Jr.

Improvement of the growth, yield, and tuber quality of purple yam through macro and micronutrient fertilization

Anabella B. Tulin

Conditions leading to addiction and avoidance of massively multiplayer online role playing games (MMORPGs) among game addicts

Neil Anthony C. Rusia and Rotacio S. Gravoso

CONTENTS

Purification and partial characterization of white radish (Raphanus sativus L. var. Long White) peroxidase from cell sespension culture extract(RETRACTED)

Sri Pudjirahati and Andi Tenri Adjeng Karossi

Delayed yellowing of broccoli florets by ethanol: Some physio-biochemical changes during storage

Dewoowoogen P. Baclayon and Toshiyuki Matsui

Floral biology of Jatropha curcas L.

Angelo Jay M. Noriel and Othello B. Capuno

Cassava grates processing wastes as source of electrical energy

Mark Anthony R. Atanacio, Daniel Leslie S. Tan and Felix J. Amestoso

Nitrogen mineralization and phosphorus solubization due to rewetting of forest and paddy soils

Marco Rodel J. Aragon and Victor B. Asio

Isozyme polymorphism to detect genetic diversity of Jatropha curcas (L.) in India

Rekha R. Warrier, P. Priyadharshini, S. Senthil Vadivu, B. Devika Nagalakshmi, C. Savitha, R. Anandalakshmi, A. Nicodemus, and B. Gurudev Singh

Organic Agriculture: The logical sequence to modern chemical agriculture in the Philippine context

Teodoro C. Mendoza

CONTENTS

The Seedling Nursery Survey on Leyte Island, the Philippines

Nestor Gregorio, Steve Harrison and John Herbohn

Profiling Tree Nurseries in Northern Mindanao, the Philippines

Don Immanuel Edralin and Agustin Mercado Jr

The Need for Improved Nursery Management Practices and Marketing in the Tree Nurseries of Northern Mindanao

Don Immanuel Edralin and Agustin Mercado Jr

Insights from the Farm Forestry Tree Seedling Nursery Sector in Western Java, Indonesia

Agustin Mercado Jr, Paul Dargusch and Nestor Gregorio

Observations of Forestry Seedling Production Systems in Thailand and Vietnam

Steve Harrison and Nestor Gregorio

Review of Current Nursery Accreditation and Seedling Certification Systems for Forest and Fruit Trees in Leyte and Samar Islands, the Philippines

Eduardo O. Mangaoang

Ensuring Seedling Quality through Fruit Tree Nursery Accreditation and Implications for Forest Nursery Accreditation

Don Immanuel Edralin and Agustin Mercado, Jr

Design and Implementation of a Communication Campaign on Best Management Practice for Forest Nurseries

Rotacio Gravoso, Nestor Gregorio, Annabelle Gerona and Jayson Godoy

Financial Modelling of Smallholder Seedling Production

Steve Harrison, Nestor Gregorio and Wendy Wilson

Research Note: ERDB Research, Development and Extension Strategies for the Production of High Quality Planting Materials

Rafael Cadiz, Marilyn Landicho and Mylene Aparente