Monthly Archives: July 2018



Quaternary Vegetation History of the Lower Bengal Basin (India) Inferred from Palaeo-palynological Analysis

Payel Roy and Nimai Chandra Barui

Physicochemical Properties, Lipid and Fatty Acid Profile of “Batuan” [Garcinia binucao (Blco.) Choisy] Seed Oil

Elizabeth S. Quevedo , Laura J. Pham , Florinia E. Merca and Antonio C. Laurena

Population Ecology of the Fiddler Crab spp. in Uca Punta, Baybay City, Leyte

Kalvin Jay G. Boregon and Julissah C. Evangelio

Potential of Chitosan for the Control of Tomato Bacterial Wilt Caused by Ralstonia solanacearum(Smith) Yabuuchi et al

Lucia M. Borines , Rezel M. Sagarino , Rosario B. Calamba , Ma.Angelica A. Contioso , Jacob Glenn F. Jansalin and Candelario L. Calibo

Egg Albumin Supplementation Decreases Isolation-Induced Aggression in Male White Mice

Francis S. Legario and Maureen Antonette D. Bereber

Assessment of Nutritional Potency and Pomological Traits in the Wild and Cultivated Varieties of Momordica charantia L. (Cucurbitaceae)

Salma Suhara Beevy and Noor Muhammed Haseena Bai

Variety and Sulfite Levels Affect Microbial and Sensory Properties of Dehydrated Jackfruit (Artocarpus heterophyllus Lam.) During Storage

Lorina A. Galvez

Knowledge Sharing Behavior of Rice Farmers in the Cyber-Villages

Ludito V. Ramirez and Ma. Theresa H. Velasco

Farming Practices of Rice Farmers in Can-Avid and Dolores, Eastern Samar

Rogelio B. Robedizo



Interpretation of Insecticide Posters by Rice Farmers In Selected Villages in Leyte, Philippines

Dennis C. Cortes and Monina Escalada

Distribution of Virus Symptoms and Viruses Infecting Field-Grown Cucurbit Crops Under Natural Tropical Conditions Within a Humid Rainforest Transition Agro-Ecology in Nigeria

E.I. Ayo-John, O.O. Odedara, E.V. Loko, F.D. Aworinde, A.C. Tella, I. G. Ogundare, A.M. Kelani,J.O. Hassan, J.O. Oladokun, and O. B. Afolayan

Growth Performance of Abaca (Musa textilis Nee) Integrated in Multi-strata Agroecosystems

Marlito M. Bande, Victor B. Asio, Joachim Sauerborn, and Volker Romheld

Mineral Nutrition of Abaca (Musa textilis Née) Planted under Coconut and Rainforestation Production Systems

Marlito M. Bande, Victor B. Asio, Joachim Sauerborn, and Volker Romheld

Formulation and Testing of Combined Organic Liquid Supplement from Trichoderma spp. and Fermented Plant and Seed Extracts on the Growth of Organic Pechay

Ellen S. Romero, Lani Lou Mar A. Lopez, Fe L. Porciuncula, Purisima P. Juico, and Jonathan L. Galindez

Performance of Irrigated Lowland Rice Grown at Different Spacing and Organic Fertilizer Levels Under Unflooded Water Management System During the Vegetative Growth Period

Archie I. Baclayon and Alfredo B. Escasinas

A Review of Postharvest Treatments to Maintain Mango (Mangifera Indica L.) Quality

Luz Geneston Asio and Francisco D. Cuaresma

Traditional and Current Knowledge on the Utilization of Mahua (Madhuca latifolia L.) Flowers by the Santhal Tribe in Similipal Biosphere Reserve, Odisha, India

S. Behera, R. C. Ray, M. R. Swain, R. C. Mohanty, and A. K.Biswal

Energy Productivity and Efficiency of Lowland Rice (Var. PSB Rc18) Under Various Organic Nutrient Sources and Quantum Enhancers

Berta C. Ratilla and Teodoro C. Mendoza

Performance of Peanut (Arachis hypogaea L.) as Influenced by Time of Planting Sweetpotato(Ipomoea batatas L.) as Intercrop

Bonievic P. Sarcol and Ulysses A. Cagasan

Pigmental Composition of Freshwater Algae at Different Levels of Nitrogen and Physico-chemical Parameters of Palhi River, Baybay, Leyte

Angelica Joy G. Yu and Felix M. Salas

Biophysical Survey of the Hinatuan Enchanted River Underwater Cave System (HERUCS) and its Connecting River, Surigao del Sur, Southern Philippines

Ethel C. Wagas, Dave Anthony Valles, Cyril Taguba, Dominic Franco C. Belleza, Alex Santos, Bernil Gastardo, Terence Paul U. Dacles, Annie G. Diola and Danilo T. Dy

Inbreeding and Mortality Risk in a Captive Population of Mhorr Gazelle (Nanger dama mhorr)

Ana Marquiza M. Quilicot and Roswitha Baumung

Nutrient Digestibility in Goats Fed With Corn Fodder Supplemented With Palm Kernel Meal

Tomas M. Austral, Jr. and Sulpecio C. Bantugan

Growth Performance of Philippine Native Chicken Fed Diet Supplemented with Varying Levels of Madre de Agua (Trichanthera gigantean Nees) Leaf Meal

Clarita E. Morbos , Dinah M. Espina and Lolito C. Bestil

Potential of Some Legume Forages for Rumen Defaunation in Goats

Maita L. Aban and Lolito C. Bestil

Optimization of Coconut Water Beverage Fermented with Lactobacillus acidophilus

Eileen B. Bandalan and Lorina A. Galvez

Leadership Roles and Management Practices of Educational Managers and Their Relationships to Teachers’ and Students’ Performance

Teresita A. Oducado

Research Note: Vege-Fish Noodle: Its Quality and Acceptability

Roberta D. Lauzon, Obdulia G. Camooying, and Naomi G. Petronio

Research Note: Histopathology of Puccinia philippinensis Syd. & P. Syd, A Fungus that Causes Leaf Rust Disease to Cyperus rotundus L.

Dindo King M. Donayre and Lucille T. Minguez



The Rising Carbon Footprint of Philippine Households: An Estimation Using Consumption Expenditure and Input-Output Analysis

Moises Neil V. Seriño

Characterization of Ruminant Husbandry Systems in Protected Areas of Batanes Islands, Philippines

Warren D. Come, Eva Schlecht and Katja Brinkmann

Floral Composition and Timber Stock of Forest In The Samar Island Natural Park

Justino M. Quimio

Post Biological Assessment of Faunal Resources in The Samar Island Natural Park

Teofanes A. Patindol

Effect of Paclobutrazol Treatment on Some Leaf Physiological and Biochemical Characteristics of Rejuvenated Coffee (Coffea arabica L.) Trees

Arsenio D. Ramos and Antonio L. Acedo, Jr.

Growth and Yield Performance of Irrigated Lowland Rice NSIC Rc218 (Oryza sativa L.) as Influenced by Water and Fertilizer Applications

Ulysses A. Cagasan and Nemesio V. Tamayo

Frond Pruning Enhanced The Growth and Yield of Eight-Year-Old Oil Palm (Elaeis guineensis Jacq.)

Junito P. Marcelino and Elvie V. Diaz

Lodging Resistance and Yield Performance of Two Traditional Rice Varieties applied with Nitrogen and Paclobutrazol

Ariel G. Mactal and Justo G. Canare Jr.

Dynamics of Plankton Community in Banahao-Palhi River in Leyte, Philippines

Marita I. Galinato and Julissah C. Evangelio

Assessment of Community Vulnerability to Riverbank Erosion in Esperanza, Agusan Del Sur, Philippines

Lenard P. Dapar , Glenn Arthur A. Garcia , Allyssa G. Mandras, Maricel M. Balo and Chime Mora-Garcia

Research Productivity in Development Communication in the Philippines

Rotacio S. Gravoso , Ian A. Navarrete and Ian Kim P. Gahoy

Patterns and Trends of Development Communication Studies Conducted by Students of a State University in the Philippines

Avril Adrianne DG Madrid and Editha G. Cagasan

Mechanization of rice production in the Philippines: trends and perspectives

Author: Caesar Joventino M. Tado


The present level of rice mechanization in the Philippines is still insufficient to significantly reduce the cost of rice production and for farmers to attain high level of competitiveness relative to those of neighboring rice-producing countries. Sustained support and a consistent mechanization policy of the government are needed. for agricultural modernization through mechanization of farm operations to take off. Aside from increasing the efficiency of production and reducing postharvest losses, farm mechanization can serve as a catalyst for the implementation of integrated rural and agricultural development programs of the government.

Keywords : agriculture, development, mechanization, rice.

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Desorption isotherms of sweetened maturing coconut meat at different temperatures

Author(s): Lemuel M. Diamante


The main objective of the study was to obtain the desorption isotherms of sweetened maturing coconut meat at different temperatures (50, 60 and 70°C). A static gravimetric technique was used for the desorption isotherm determination of the material using a standard procedure. Results revealed that the desorption isotherms of sweetened maturing coconut meat were of type III according to the BET classification, The increase in the amount of sorbed water at a given water activity with the decrease in temperature is consistent with the theory of physical adsorption. A modified Caurie equation can describe the effect of temperature. on the desorption isotherms of sweetened maturing coconut.. Using this equation for analysis, the results suggest that when drying of sweetened maturing coconut meat is done at higher temperatures (above 70°C) the equilibrium moisture content (EMC) of the sample is not greatly affected and attains a value of less than 1% dry basis. However, when drying is done at lower temperatures (below 60°C), the relative humidity of the drying air is higher and giving higher EMC of the sample. The net heat of desorption for sweetened maturing coconut meat increases as the moisture content decreases which is expected for most food products. The relationship between the net heat of desorption and moisture content of the product can be expressed by an exponential equation. Using this equation for analysis, the results showed that as the final moisture content of the product decreases the energy requirement increases.

Keywords : desorption isotherms, energy requirement, equilibrium moisture content, maturing coconut

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Bacteriocin production by Enterococcus faecalis VRE 1492 using different media at varying pH and temperatures

Author: Julie D. Tan


Bacteriocins arc natural proteinaceous bactericidal substances produced by certain strains of bacteria and act against some other strains of the same or closely related species. This study was conducted to increase the level of bacteriocin production by Enterococcus faecalis VRE 1492 using selected growth media. Results showed that bacteriocin production by Enterococcus faecalis VRE 1492 was increased at different growth media, initial pH and fermentation time. Maximum production of bacteriocin was observed using De Man Rugosa and Sharpe (MRS) medium with glucose. The activity of bacteriocin was greatly increased in MRS medium with glucose at initial pH of 7.50 and 8.50 after 8 to 20 hours of fermentation at 30°C. Progressive increase in cell count from 0 to 24 hours of fermentation did not necessarily favor an increase in bacteriocin activity. After 20 hours of fermentation, the activity of bacteriocin decreased. The production of proteolytic enzymes by the bacterium was believed to inactivate the bacteriocin.

Keywords : bacteriocin, biopreservation, Enterococcus faecalis VRE 1492

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Influence of leaf volatiles of Eucalyptus citriodora Hook. on the growth and development of Exorista bombycis (Louis)

Author: K.C. Narayanaswamy


The study evaluated the influence of olatiles emanating from crushed leaves of Eucalyptus citriodora Hook. on the growth and development. of uzi fly (Exorista bombycis Louis), a serious endoparasitoid of silkworm (Bombyx mori Exposure of freshly laid eggs of E. bombycis (Louis) to volatiles from the leaves of E.citriodora Hook. for different durations resulted in significant reduction in their hatchability. None of the maggots emerged from the host larvae when the eggs of the parasitoid were x posed for 64 and 74 hours to the volatiles. There was a significant increase in the duration of the life cycle aside from the reduction in the rate of pupation and adult emergence as the egg exposure period increased. Findings indicate that the chronic effects of volatiles were sustained during embryonic development. The known major chemical components of E. citriodora such as citronellal cineole, pinenes, pinocarveol, cuminaldehyde, sesquiterpene alcohols, aromadendrene, phenols and aldehydes are presumed to be responsible for its adverse effects on E. bombycis.

Keywords : Exorista bombycis. Eucalyptus citriodora, growth and development. leaf volatiles.

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Estimation of leaf area in two abaca (Musa textiles Nee) varieties by regression methods

Author(s): Ricardo A. Esplanada Jr. and Romel B. Armecin


A rapid, non-destructive and precise method for leaf area (LA) determination in two varieties (Inosa and Laylay) of abaca (Musa textiles Nee) was developed from linear measurements. Combining both length (L) and width (W) in the model could predict accurately the actual leaf area of abaca. The regression equations that gave the modest mate for leaf area were LA = 1733.01 + 0.58 (L x W) (r = 0.87) for Inosa and, LA = -106.74 + 0.81 (L x W) (r = 0.99) for Laylay variety. Total leaf area can be estimated using leaf number 3 (third leaf below the newly expanded leaf) and leaf number 1 (newly expanded leaf) for lnosa and Laylay varieties. respectively.

Keywords : leaf area. linear measurements. Musa textiles.

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Evaluation of stability in sweetpotato using different methods

Author(s): S.K. Naskar and Archana Mukherjee


The stability in sweetpotato (Ipomea batatas L.) was evaluated using the methods of Eberhart and Russel (1966), Shukla (1972.) and Francis and Kannenberg (1978). Eight sweetpotato lines along with a check local cultivar were grown for three years in eight environments across Orissa. India. Variances due to genotypes, environments, and genotype environment interaction were highly significant. Both linear and nonlinear components were also significant. The three stability method differed in identifying stable cultivars. Eberhart and Russel’s S2d and Shukla’s S2parameters were highly correlated (r2=0.78**). Only one genotype (90/606) was found stable under the three methods evaluated. The Francis and Kannenberg technique was most convenient in grouping the cultivars.

Keywords : coefficient of variation. G x E interaction. rank correlation. stability. sweetpotato.

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Effect of NaCl on axillary shoot proliferation in sweetpotato

Author: Archana Mukherjee


Micropropagation through axillary shoot proliferation is a simple technique which ensures genetic stability of the propagules. To enhance the rate of multiplication, different doses of sucrose and NaC1 were used for axillary shoot proliferation in sweetpotato. Murashige and Skoog’s basal medium supplemented with growth regulators [NA A (0.5 mg/l) + BA (1.0 mg/l) + GA, (0.5 mg/l)] and variable doses of sucrose and NaCl were used. Among the different doses tested, 4% sucrose resulted in minimum bud dormancy. However, the overall shoot multiplication rate was optimal with 3% sucrose. Although the time required to bud break was considerably stable up to 0.5 g/l of NaCl supplementation and with 3% sucrose, the mean number of shoots produced per explant improved (3.5 — 5.5 shoots/ex-plant) with increasing NaCl level up to 1.0 g/l irrespective of the genotype tested. High rate of multiplication with supplementation of 1.0 g/I is significant for in vitro multiplication and also to use axillary meristem as target tissue for genetic transformation. Delayed bud break response with 2.0 g/l NaCl supplementation can be exploited for in vitro storage of sweetpotato.

Keywords : axillary shoot proliferation. growth regulators. sodium chloride. sweetpotato.

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