Author name: admin

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

Volume 31 No. 2 July - December 2009 / By

Niel Anthony C. Rusia and Rotacio S. Gravoso ABSTRACT Interviews with 23 massively multiplayer online role-playing games (MMORPGs) addicts revealed that they were addicted to the games because they lacked worthwhile activities, MMORPGs offer online game features and deep online experience, they were interested in technological trends and gained personal satisfaction from playing MMORPGs, and …

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

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

Volume 31 No. 2 July - December 2009 / By

Anabella B. Tulin ABSTRACT The high demand for yam as food and for industry calls for the development of new technologies and innovations that will increase yam production. This study was conducted to assess the effects of the addition of different levels of micronutrient fertilizers (Biozome-200 micronutrient soil conditioner) to NPK fertilizers on the growth …

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

A review of soil degradation in the Philippines

Volume 31 No. 2 July - December 2009 / By

Victor B. Asio1, Reinhold Jahn2, Federico O. Perez3, Ian A. Navarrete4 and Sergio M. Abit Jr.1 ABSTRACT The paper reviews the available information on soil degradation which is a major agricultural and environmental problem in the Philippines. Soil erosion appears to be the most widespread process of soil degradation and is also the most studied. …

A review of soil degradation in the Philippines Read More »

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

Volume 31 No. 2 July - December 2009 / By

Editha G. Cagasan1 and Ma. Theresa H. Velasco2 ABSTRACT Monitoring of the impacts of the Techno Gabay Program (TGP) using the most significant change (MSC) technique was done for one year in nine Techno Gabay (TG) centers in Eastern Visayas, Philippines. Field technicians of the TG centers were trained on how to collect and select …

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

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

Volume 31 No. 2 July - December 2009 / By

Erlinda A. Vasquez1,2,5, Dietmar Schmidt2, Claus Peter Zebitz1, Uwe Beifuss2, Iris Klaiber2, Jurgen Kroschel3 and Remberto Patindol4 ABSTRACT Structure-activity and species specificity of the three synthetic sweetpotato weevil pheromones, (Z)-3-dodecenyl-(E)-2-butenoate of C. formicarius, dodecenyl-(E)-2-butenoate of C. brunneus and decyl-(E)-2-butenoate C. puncticollis and their corresponding precursor free alcohols and trans-crotonic acid were assayed on virgin males …

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

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

Volume 31 No. 2 July - December 2009 / By

Maylin Pérez-Bernal, Magalis Delgado Rigo, Carlos Alberto Hernández Diaz, María Teresa Barceló Avila2 and Raúl Armas Ramos 2 ABSTRACT Most of Cuban rice cultivars are classified into indica subspecies, and they are inclined to poor in vitro response. In this paper were studied the role of endosperm and amino acids on callus formation of two …

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

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

Volume 31 No. 1 January - June 2009 / By

Florence Lasalita-Zapico1 and Violeta N. Villegas2 ABSTRACT Morphological analysis was undertaken to assess the degree of genetic relatedness and to characterize selected papaya (Carica papaya L.) inbreds and hybrids. Transmission of phenotypic traits from inbred parents to hybrid progeny followed the Mendelian pattern (complete dominance). The clustering mechanism separated the papaya genotypes into two groups. …

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

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

Volume 31 No. 1 January - June 2009 / By

Ian A. Navarrete1,2, Salfe O. Macalde1 and Victor B. Asio1 ABSTRACT The influence of aggregates and rhizosphere on nutrient availability of degraded tropical soils is not yet well understood. The study evaluated differences in the nutrient characteristics between rhizosphere and non-rhizosphere soils, aggregated and homogenized soil samples, and inner and outer portions of aggregates. Soil …

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

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.)

Volume 31 No. 1 January - June 2009 / By

Ivy M. Modina1, Candelario L. Calibo2 and Lucia M. Borines3 ABSTRACT Chitosan has been reported to have antimicrobial property to some pathogen species as well as an elicitor of resistance in plants, particularly Systemic Acquired Resistance (SAR). A bioassay of chitosan against Xanthomonas oryzae pv oryzae (Xoo) was conducted to determine its antimicrobial property against …

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.) Read More »

Allelochemicals from the leaves of Tamarindus indica L.

Volume 31 No. 1 January - June 2009 / By

Suparna Mandal Biswas1, Nasrin Begam1, Sunanda Chanda1 and Lalit Kumar2 ABSTRACT Potent biopesticides with strong antimicrobial activity as well growth inhibitory activity has been isolated and purified from the Ethyl Acetate Fraction (TrEAF) of tamarind leaves. Chromatographic analyses (TLC, UV, MS, NMR, and IR) indicated the presence of putative caffeic acid derivative in Tamarind leaves. …

Allelochemicals from the leaves of Tamarindus indica L. Read More »

Scroll to Top