The Annals of Tropical Research (ATR) is a semi-annual international peer-reviewed journal on research and development in tropical upland, lowland and marine settings. The journal publishes original results of local and foreign research on all aspects of agricultural and natural resource management including new research methodologies in basic and applied fields. Unsolicited review articles and symposium proceedings are also considered for publication.   

       With the objective of providing a medium for its researchers to disseminate their research findings, the Visayas State University founded the Annals of Tropical Research (ATR) in 1979.

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   Manuscript structure

       The first page should contain the title of the paper and the names and addresses of the authors. The corresponding author, his (her) telephone and fax numbers and/or e-mail address should be indicated as footnote. The second page of the manuscript should contain on the Title, Abstract and Keywords. The abstract should present briefly the scope. Major results and conclusions of the paper and should not exceed 250 words. A list of 4 to 6 keywords should immediately follow the abstract. The main portion of the manuscript should start on the third page. It should be divided into the following sections: Introduction, Materials and Methods, Results and Discussion, Conclusion (and Recommendations or Implications if applicable). Acknowledgment (if any) and References. Each section may be subdivided into sub-sections.

   References

       Only published papers should be cited as references except for thesis. They should be cited in the text as follows: single author, Bacusmo (1988) or (Bacusmo, 1988); two authors, Chen and Lee (1995) or (Chen and Lee, 1995); more than two authors, Palomar et al. (1993) or (Palomar et al., 1993). The references must then be listed in alphabetical order at the end of the paper, and should conform to the following styles:

   Paper in Journals:

       PARDALES J.R. JR., Y. KONO and A. YAMAUCHI. 1992. Epidermal cell elongation in the growth zone of sorghum seminal roots exposed to high root zone temperature. Plant Science 81:143-146.

   Books and Monographs:

      MARSCHNER H. 1995. Mineral Nutrition of Higher Plants; 2nd edn. Academic Press, London.

C      CAMPILAN D.M. 1995. Learning to change, changing to learn: managing natural resources for sustainable agriculture in the Philippine uplands. WURS, Wageningen.

    Paper within a book:

     JAHN R. and V.B. ASIO. 1998. Soils of the tropical forests of Leyte, Philippines: weathering, characteristics, classification and site qualities. In: Soils of Tropical Forest Ecosystems (A. Schutte and D. Ruhiyat. eds.) Springer-Verlag, Berlin, pp. 29-36.

    Paper in conference proceedings:

      MARGRAF J., P.P. MILAN and P. WIDMANN. 1997. Rainforestation farming: community based biodiversity utilization for sustainable development of critical watersheds in the Philippines. Proceedings of the International Conference on Reforestation with Philippine Species. Palo, Leyte, Philippines. pp. 320-334.

   Thesis:

     GERMANO B.P. 1998. Benthic-pelagic coupling in tropical shallow soil bottoms and implications for management. PhD thesis. University of Vienna, Austria.

  Illustrations and Tables

     Figures should be of good quality and should have thickness of lines and sizes of lettering and other symbols to allow reduction of their original dimensions up to 50%. They must not exceed the size of an A4 or a letter-size bond paper. Explanatory notes to tables should be indicated by superscript small letters. Figures and tables should be printed on separate sheets and placed after the references section (i.e. not inserted in the typed text). In addition, they should be provided with concise captions (above for tables and below for figures) which adequately describe their contents. Photographs should be submitted as high-contrast black-and-white glossy prints. Color plates may be included if colors is necessary for clarity.

   Abbreviations and Units

       Only SI units and abbreviations should be used. Normal and molar concentrations should be written in italics N and M, respectively. The following standard abbreviations should also be used: mg, g, kg, km, mm, cm, m, rpm, s(second), h(hour), min, l(liter), ml, m^-3, kg per ha or kg ha^-1 (the minus index should always be used in tables and figures). Latin biological names should be italicized (or undefined).

   Offprints

      Twenty offprints of each published paper will be supplied free of charge. Additional copies may be ordered from the editorial office of the ATR.

   Submission

      Submission of a paper is understood to mean that it is original and unpublished and is not being considered for publication elsewhere. four copies of each manuscript should be sent to:

              The Editor
              Annals of Tropical Research
             Office of the Director for Research and Extension 
             Leyte State University
             Baybay, Leyte 6521-A, Philippines

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

              Wasantha S. Weliange, Jimmy Pogosa, Chandima Lakaadikara, Maria Leichtfried, and Friedhelm Gölthenboth

• Toxic heavy metal biosorption by some marine bacteria isolated 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 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 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

• Research Note: Abundance and prey spectrum of web spiders in rice agroecosystems of Pangasugan, Leyte, Philippines

           Sarwshri Gangurde, Kondrad Martin and Maria Juliet C. Ceniza

Volume 29 No.1 2007 (January-June)

• In vitro culture of rose species (Rosa spp.) via axillary bud growth

              Authors: Zozimo S. de la Rosa Jr. and Marilyn M. Belarmino

• Tomato fruit pathenocarpy and yield increase in response to chlorophenoxyacetic acid

              Authors: Rosalina D. Poliquit and Misael T. Diputado Jr.

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

              Author: 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.

              Authors: 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]

              Authors: 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

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

• Amplification of health risk messages in leading Philippine newspapers

             Authors: Jedess Miladel C. Nuñez and Rotacio S. Gravoso

• Instructions to Authors

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

              Manas Ranian Sahoo, Madhumita Dasgupta and Archana Mukherjee

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

             Berta C. Ratilla and Rodolfo G. Escalada

• Effects of video-mediated student-centered learning environment on students' understanding of plant pathology principles

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

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

            Justino M. Quimio

• Is Heribera fomes Buch. Ham. less adapted to the present conditions of the Indians Sundarbans compared to other mangrove species?

             P. Nandy (Datta), M. Ghose, R. Spoon-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) (Envinia 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

Volume 28 No.1 2006 (in press)

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

              Authors: R.C. Ray

• Tomato fruit parthenocarpy and yield increase in response to chlorophenoxyacetic acid

              Authors: Rosalina D. Poliquit and Misael T. Diputado Jr.  

• Soil biological activity under different Land-uses in Leyte, Philippines

             Authors: Carstein Marohn, Reinhold Jahn & Joachim Sauerborn

• Community structure of arthropods in Agusan del Norte lowland ricefields

            Authors: Rowena P. Varela and Lina T. Villacarlos

• Nitrate concentrations in animal manure dumping sites

            Authors: Marilyn C. Sebial and L. S. Sonon

• Production of acidophilus milk enriched with purees from colored sweetpotato (Ipomoea batatas Linn.) varieties

           Authors: Rodney H. Perez and Julie D. Tan

• Filipino consumer preferences for peanut butter

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

1. Dr. Antonio L. Acedo, Horticulture/Postharvest (Visayas State University, Phil.)
2. Dr. Jose L. Bacusmo, Plant Breeding & Genetics (Visayas State University, Phil.)
3. Dr. Dindo M. Campilan, Communication of Innovations & Participatory Research (UPWARD-CIP, Laguna, Phil.)
4. Dr. Othello B. Capuno, Plant Breeding & Genetics (Visayas State University, Phil.)
5. Dr. Zueng-Sang Chen, Environmental Pollution & Pedology (National Taiwan University, Taipei, Taiwan)
6. Dr. Francisco B. Elegado, Fermentation Tech. & Protein Chem. (Nat'l Inst. of Molecular Biol. & Biotech, UPLB, Phil.)
7. Dr. Rodolfo G. Escalada, Agronomy & Agroforestry (Visayas State University, Phil.)
8. Dr. Ruben M. Gapasin, Phytonematology & Plant Pathology (Visayas State University, Phil.)
9. Prof. Friedhelm Göltenboth, Limnology & Ecology (University of Hohenheim, Germany)
10. Dr. Roberto C. Guarte, Agricultural Engineering & Postharvest and Energy Technology (Visayas State University, Phil.)
11. Dr. Steve H. Harrison, Forest Economics (University of Queensland, Australia)
12. Prof. Nobutaka Ito, Power, Energy & Agricultural Mechanization (Mie University, Japan)
13. Prof. Reinhold Jahn, Soil Science & Landscape Ecology (University of Halle-Wittenberg, Germany)
14. Dr. Maria Leichtfried, Limnology & Ecology (Biological Station Lunz, Austria)
15. Dr. Paciencia P. Milan, Biology & Ecology (Visayas State University, Phil.)
16. Prof. Jörg Ott, Marine Biology & Ecology (University of Vienna, Austria)
17. Dr. Oscar B. Posas, Animal Science (Visayas State University, Phil.)
18. Dr. R.C. Ray, Postharvest Tecnology & Microbiology (CTCRI, Bhubaneswar, India)
19. Prof. Albert Reif, Vegetation Science and Site Classification (University of Freiburg, Germany)
20. Prof. Joachim Sauerborn, Agroecology (University of Hohenheim, Germany)
21. Dr. Letecia S. Sonon, Soil & Environmental Chemistry (University of Georgia, USA)
22. Prof. Hermann Van Keulen, Soil Nutrient Management (Wageningen University, Netherlands)
23. Dr. Arthur Q. Villordon, Genetics and Plant Breeding (Louisiana State University, USA)
24. Prof. Akira Yamauchi, Bioresources Recycling (Nagoya, University, Japan)

     Editor-in-Chief:          Dr. Victor B. Asio, Soil Science & Geoecology, Dept. of Agronomy and Soil Science, Visayas State University

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