Citations with the tag: AGRICULTURE -- Tropics

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  • International Journal of Tropical Agriculture.
     // Soil & Water Conservation News; Mar/Apr91, Vol. 11 Issue 8, p23 

    Presents an overview of the `International Journal of Tropical Agriculture,' edited by Dr. R.D. Laura. An India-based quarterly which publishes research papers, reviews, notes, short communications and book reviews in English.

  • TROPICAL AGRICULTURE GETS ATTENTION.
     // Agricultural Research; Feb2002, Vol. 50 Issue 2, p10 

    Reports on a conference on tropical agriculture at the Tropical Agricultural Research and Higher Education Center in Turrialba, Costa Rica in February 2002. Issues to be discussed at the conference; Information on the speakers; Role of the center in the improvement of cacao production.

  • Rain-forest call.
     // Wild: Australia's Wilderness Adventure Magazine; Jan-Mar96, Issue 59, p25 

    States that a call for a change in priorities in the management of the Australia's tropical forest has been made by Professor Len Webb, a veteran ecologist and pioneer researcher of rain forest. Other comments made by Webb.

  • Urgently Needed: Broad, Concerted Action.
    Hervey, Ralph J. // BioScience; Jul1969, Vol. 19 Issue 7, p584 

    A letter to the editor is presented in response to the article on tropical agriculture by H. David Thurston in the 1969 issue.

  • SUSTAINABLE AG.
    Abdul-Baki, Aref A. // American Vegetable Grower; Mar2005, Vol. 53 Issue 3, p56 

    Presents information on the potential of tropical areas such as the Southeastern U.S. for vegetable production per unit area per year. Advantages of the area, including growing summer vegetables during winter; Competition of crops including insects; Importance of cover crops such as hemp.

  • Southeast Asian gardeners: Teaching fish to swim.
    Brown, Allison // Community Greening Review; 2004/2005 Special Edition, Vol. 13, p149 

    Provides information on teaching home gardening to villagers in northeast Thailand. Gardening components of international development programs in the country; Details of gardening in tropical regions; Overview of traditional gardening technique in the country.

  • Nitrogen oxides and tropical agriculture.
    Bouwman, A.F. // Nature; 4/30/1998, Vol. 392 Issue 6679, p866 

    Discusses research which studied measurements of nitrogen oxide fluxes from tropical soils. How agricultural activities have increased emissions of nitrous oxide (N2O) and nitric oxide (NO); Impact of emissions on the atmosphere; Research by Veldkamp, Keller and Nunez in `Global Biogeochemical...

  • Nutrient stocks of short-term fallows on a high base status soil in the humid tropics of Papua New Guinea.
    Alfred E. Hartemink // Agroforestry Systems; Dec2004, Vol. 63 Issue 1, p33 

    In order to understand nutrient dynamics in tropical farming systems with fallows, it is necessary to assess changes in nutrient stocks in plants, litter and soils. Nutrient stocks (soil, above ground biomass, litter) were assessed of one-year old fallows with Piper aduncum, Gliricidia sepium...

  • Decomposition and nitrogen release patterns of Paraserianthes falcataria tree residues under controlled incubation.
    R. Chintu; A.R. Zaharah; A.K. Wan Rasidah // Agroforestry Systems; Dec2004, Vol. 63 Issue 1, p45 

    Tree legumes can serve as nitrogen (N) source for cereals in resource poor farms where chemical fertilizer is financially unaffordable. Despite the increasing importance of Paraserianthes falcataria in tropical agroforestry systems of Southeast Asia, little information is available on the...

  • Decomposition and nitrogen release patterns of Paraserianthes falcataria tree residues under controlled incubation.
    R. Chintu; A.R. Zaharah; A.K. Wan Rasidah // Agroforestry Systems; Dec2004, Vol. 63 Issue 1, p45 

    Tree legumes can serve as nitrogen (N) source for cereals in resource poor farms where chemical fertilizer is financially unaffordable. Despite the increasing importance of Paraserianthes falcataria in tropical agroforestry systems of Southeast Asia, little information is available on the...

  • Impacts of Climate Change and the End of Deforestation on Land Use in the Brazilian Legal Amazon.
    Lapola, David Montenegro; Schaldach, Ruediger; Alcamo, Joseph; Bondeau, Alberte; Msangi, Siwa; Priess, Joerg A.; Silvestrini, Rafaella; Soares-Filho, Britaldo Silveira // Earth Interactions; 2011, Vol. 15 Issue 16, p1 

    Climate change scenarios vary considerably over the Amazon region, with an extreme scenario projecting a dangerous (from the human perspective) increase of 3.8��C in temperature and 30%% reduction in precipitation by 2050. The impacts of such climate change on Amazonian land-use...

  • THE KINETICS OF WATER VAPOUR SORPTION: ANALYSIS USING PARALLEL EXPONENTIAL KINETICS MODEL ON SIX MALAYSIAN HARDWOODS.
    Zaihan, J.; Hill, C. A. S.; Curling, S.; Hashim, W. S.; Hamdan, H. // Journal of Tropical Forest Science; Apr2010, Vol. 22 Issue 2, p107 

    Six Malaysian hardwoods, chengal (Neobalanocarpus heimii), kapur (Dryobalanops spp.), keruing (Dipterocarpus spp.), ramin (Gonystylus spp.), acacia (Acacia mangium) and sesendok (Endospermum malaccense) were studied to determine their sorption kinetics behaviour using a dynamic vapour sorption...

  • The Evolution of Agricultural Policies and Agribusiness Development in Brazil.
    Chaddad, Fabio R.; Jank, Marcos S. // Choices: The Magazine of Food, Farm & Resource Issues; 2006 2nd Quarter, Vol. 21 Issue 2, p85 

    The article examines agricultural production growth and agribusiness development in Brazil. The factors which contribute to the growing competitiveness of the Brazilian agricultural food sector are revealed which include investments in tropical agricultural research. The internal and external...

  • Proximate Population Factors and Deforestation in Tropical Agricultural Frontiers.
    Carr, David L. // Population & Environment; Jul2004, Vol. 25 Issue 6, p585 

    Forest conversion for agriculture expansion is the most salient signature of human occupation of the earth's land surface. Although population growth and deforestation are significantly associated at the global and regional scales, evidence for population links to deforestation at...

  • EVALUACI�N DE LA PRODUCCI�N DE CA�A DE AZ�CAR A PARTIR DE HERRAMIENTAS DE AGRICULTURA ESPEC�FICA POR SITIO.
    Correa, Alexander Gonz�lez; Chavarro, Lina Marcela // Ingenier�a de Recursos Naturales y del Ambiente; 2010, Issue 9, p61 

    At American Center for Tropical Agriculture (CIAT) it was performed an analysis of sugarcane production and yield, differentiating by agro-ecological zones, in order to determine their level of productivity (low, medium, high) and each of their lots. It was compared the difference between CIAT...

  • Nitrogen recoveries from organic amendments in crop and soil assessed by isotope techniques under tropical field conditions.
    Douxchamps, Sabine; Frossard, Emmanuel; Bernasconi, Stefano M.; Hoek, Rein van der; Schmidt, Axel; Rao, Idupulapati M.; Oberson, Astrid // Plant & Soil; Apr2011, Vol. 341 Issue 1/2, p179 

    The integration of multipurpose legumes into low-input tropical agricultural systems is needed because they are a nitrogen (N) input through symbiotic fixation. The drought-tolerant cover legume canavalia ( Canavalia brasiliensis) has been introduced for use either as forage or as a green manure...

  • "Drivers" de mudanças no sistema agroalimentar brasileiro.
    Rodrigues, Roberto; Santana, Carlos Augusto M.; Luz Barbosa, Mariza M. T.; Pena Júnior, Marcos A. G. // Parcerias Estratégicas; jun2012, Vol. 17 Issue 34, p7 

    Abstract (is article identify and examine the influence of changes that drivers may have on the performance of the agrifood system in the coming years. (e study was organized in four parts: 1) the identification of different types of drivers that can affect the performance of the national...

  • Assessing Biodiversity from Space: an Example from the Western Ghats, India.
    Bawa, Kamaljit; Rose, Joseph; Ganeshaiah, K. N.; Barve, Narayani; Kiran, M. C.; Umashaanker, R. // Conservation Ecology (11955449); 2002, Vol. 6 Issue 2, p30 

    The article presents a study which discussed the potential use of satellite imagery to characterize areas of high and low species richness of trees in tropical forests, conducted in the Biligiri Rangaswamy hills in the Western Ghats, India. The study discussed the application of the values of...

  • The potential value of agroforestry to dung beetle diversity in the wet tropical forests of the Pacific lowlands of Colombia.
    Neita, Jhon; Escobar, Federico // Agroforestry Systems; May2012, Vol. 85 Issue 1, p121 

    In tropical regions where agricultural activities are limited, agroforestry is an alternative for both economic development and for the management and conservation of biodiversity. The potential role of different types of land use as reservoirs of dung beetle diversity in the wet tropical forest...

  • An experimental assessment of landscape configuration effects on frog and toad abundance and diversity in tropical agro-savannah landscapes of southeastern Brazil.
    Silva, Fernando; Oliveira, Thiago; Gibbs, James; Rossa-Feres, Denise // Landscape Ecology; Jan2012, Vol. 27 Issue 1, p87 

    Amphibians are an imperiled group of vertebrate animals that typically have biphasic life histories involving a shift from aquatic larval habitats to terrestrial adult habitats. Habitat loss is the greatest threat to amphibians and the importance of the spatial configuration of terrestrial and...

  • Monitoring Selective Logging in Tropical Evergreen Forests Using Landsat: Multitemporal Regional Analyses in Mato Grosso, Brazil.
    Matricardi, Eraldo A. T.; Skole, David L.; Cochrane, Mark A.; Qi, Jiaguo; Chometowski, Walter // Earth Interactions; 2005, Vol. 9 Issue 1, p1 

    Selective logging degrades tropical forests. Logging operations vary in timing, location, and intensity. Evidence of this land use is rapidly obscured by forest regeneration and ongoing deforestation. A detailed study of selective logging operations was conducted near Sinop, State of Mato...

  • Research on the Further Role of Retired Cadres in Agricultural Research Units Under the New Situation--Case Study of Chinese Academy of Tropical Agriculture Sciences.
    SHI Xueru; LIN Peiqun // Cross-Cultural Communication; 12/31/2012, Vol. 8 Issue 6, p99 

    This paper elaborated the importance of retired researchers play a great role in the agricultural research units under the new era, and it takes Chinese Academy of Tropical Agriculture Sciences (Hereinafter referred to as CATAS) as a example to analyze the current situation of the role and the...

  • Growth of Short Rotation Cajanus Cajan Fallow and Its Impact on a Degraded Tropical Alfisol.
    OKE, David Olanrewaju // International Journal of Natural & Engineering Sciences; Sep2007, Vol. 1 Issue 3, p1 

    Cajanus cajan (L) Millsp. has been reported to improve soil fertility in many areas of the humid tropics. Although this woody species is widely cultivated in the South-western Nigeria usually in association with other agricultural crops, reports of its successful use as a fallow species are...

  • Proximate Causes and Underlying Driving Forces of Tropical Deforestation.
    Geist, Helmut J.; Lambin, Eric F. // BioScience; Feb2002, Vol. 52 Issue 2, p143 

    Reports on tropical deforestation due to both local and regional pressures which are acting in various combinations in different geographic locations. Factors including agricultural expansion, wood extraction, and infrastructure expansion; Economic factors, such as commercialization and the...

  • Nutrient stocks of short-term fallows on a high base status soil in the humid tropics of Papua New Guinea.
    Alfred Hartemink // Agroforestry Systems; Dec2004, Vol. 63 Issue 1, p33 

    In order to understand nutrient dynamics in tropical farming systems with fallows, it is necessary to assess changes in nutrient stocks in plants, litter and soils. Nutrient stocks (soil, above ground biomass, litter) were assessed of one-year old fallows with Piper aduncum, Gliricidia sepium...

  • Humic Substances from a Tropical Soil.
    Yormah, Thomas B. Rick; Hayes, Michael H. B. // Humic Substances, Peats & Sludges; 1997, p176 

    Soil samples taken from the 0-20, 20-50, and 50-90 cm depths in the profile of a Tropical soil were analysed for clay and (hydr)oxide compositions, and for total organic matter (OM), for the light fraction of the OM, for OM in different soil size fractions (including the clay-size fractions),...

  • BANANO ORGÁNICO DE PIURA "ESTAMOS EN EL CAMINO CORRECTO PARA EXPORTAR DIRECTAMENTE BANANO ORGÁNICO".
    Yormah, Thomas B. Rick; Hayes, Michael H. B. // Agro Enfoque; ene2009, Vol. 22 Issue 162, p16 

    No abstract available.

  • Anthracnose disease evaluation of sorghum germplasm from Honduras.
    Erpelding, John E. // Gene Conserve; Jan-Mar2011, Vol. 10 Issue 39, p1 

    Germplasm collections are important resources for sorghum improvement and 17 accessions from Honduras were inoculated with Collectotrichum sublineolum and evaluated at the Tropical Agriculture Research Station in Isabela, Puerto Rico during the 2005 and 2006 growing seasons to identify sources...

  • A comparative test of phylogenetic diversity indices.
    Schweiger, Oliver; Klotz, Stefan; Durka, Walter; Kühn, Ingolf // Oecologia; Aug2008, Vol. 157 Issue 3, p485 

    Traditional measures of biodiversity, such as species richness, usually treat species as being equal. As this is obviously not the case, measuring diversity in terms of features accumulated over evolutionary history provides additional value to theoretical and applied ecology. Several...

  • The fignificent fig man.
    MAST, KATIE // High Country News; 12/23/2013, Vol. 45 Issue 22, p5 

    The article offers brief profile of Lloyd Kreitzer, owner of Albuquerque greenhouse based in Mexico. It reveals that Kreitzer is working as regional fig expert and has a collection of a wide variety of fig plants in his nursery. It reveals that Kreitzer has a passion for fig fruits since...

  • Genetic Diversity in Musa acuminata Colla and Musa balbisiana Colla and some of their natural hybrids using AFLP Markers.
    Ude, G.; Pillay, M.; Nwakanma, D.; Tenkouano, A. // Theoretical & Applied Genetics; Jun2002, Vol. 104 Issue 8, p1246 

    Genetic diversity and relationships were assessed in 28 accessions of Musa acuminata (AA) Colla and Musa balbisiana (BB) Colla, and some of their natural hybrids, using the amplified fragment length polymorphisms (AFLP) technique. Fifteen AFLP +3 primer pairs produced 527 polymorphic bands among...

  • Introgression of genes for dry matter content from wild cassava species.
    Ojulong, H.; Labuschangne, M.; Herselman, L.; Fregene, M. // Euphytica; Nov2008, Vol. 164 Issue 2, p163 

    Cassava cultivars often have poor resistance to biotic stresses and lack good quality traits. Wild species of cultivated crops have frequently been used as an important source of genetic diversity. Cassava breeders are becoming increasingly interested in incorporating genes of wild relatives. In...

  • New soil map to boost productivity in Africa.
    Ojulong, H.; Labuschangne, M.; Herselman, L.; Fregene, M. // Geographical (Geographical Magazine Ltd.); Apr2009, Vol. 81 Issue 4, p9 

    This article discusses the development of funding for the International Center for Tropical Agriculture to research and map soil profiles in Africa. This project is designed to improve agriculture while working to prevent erosion. The place that this project occupies within a plan to map global...

  • WR Test Yourself!
    Ojulong, H.; Labuschangne, M.; Herselman, L.; Fregene, M. // Weekly Reader News - Senior; 10/1/2004, Vol. 83 Issue 4, p1 

    The article presents passages for reading comprehension followed by multiple choice questions based on the passage. However, for the African children who toil under slave like conditions on cacao plantations, life is not sweet. The cacao bean is the main ingredient in chocolate. According to a...

  • The mobility and bioavailability of trace metals in tropical soils: a review.
    Rieuwerts, John S. // Chemical Speciation & Bioavailability; 2007, Vol. 19 Issue 2, p75 

    In recent years, initiatives on critical loads of metals have resulted in the development of models to predict critical, i.e. mobile or bioavailable, concentrations of potentially toxic elements in soils. These models have been based on data from temperate soils and, considering the...

  • Nitrogen budget and gaseous nitrogen loss in a tropical agricultural watershed.
    Yoshikawa, Natsuki; Shiozawa, Sho; Ardiansyah // Biogeochemistry; Jan2008, Vol. 87 Issue 1, p1 

    Although agricultural systems in tropical monsoon Asia play a central role in the global nitrogen (N) cycle, details of the N cycle in this region on a watershed scale remain unclear. This study quantified the N budget in a tropical watershed of 221 km2 on Java Island, where paddy fields cover...

  • Development of ethnobiologically diverse tropical forests.
    Brazee, Richard J.; Southgate, Douglas // Land Economics; Nov92, Vol. 68 Issue 4, p454 

    A dynamic optimal control model describing the benefits and costs associated with the development of tropical forests rich in plant and animal species and folk knowledge is presented. The model is used as a framework to assess how various market and institutional incentives might influence both...

  • Measuring the Opportunity Cost of Carbon Sequestration in Tropical Agriculture.
    Zelek, Charles A.; Shively, Gerald E. // Land Economics; Aug2003, Vol. 79 Issue 3, p342 

    We present a method for measuring the opportunity cost of sequestering carbon on tropical farms. We derive the rates of carbon sequestration for timber and agroforestry systems and compute incentive compatible compensating payment schedules for farmers who sequester carbon. The method is applied...

  • Adaptive Capacity and Social-Environmental Change: Theoretical and Operational Modeling of Smallholder Coffee Systems Response in Mesoamerican Pacific Rim.
    Eakin, Hallie; Boj�rquez-Tapia, Luis A.; Diaz, Rafael Monterde; Castellanos, Edwin; Haggar, Jeremy // Environmental Management; Mar2011, Vol. 47 Issue 3, p352 

    Communities who rely directly on the natural environment for their survival typically have developed risk management strategies to enable them to avoid dangerous thresholds of change to their livelihoods. Development policy appropriate for natural resource-based communities requires an...

  • Living with the Trees of Life: Towards the Transformation of Tropical Agriculture.
    Sayer, Jeff // International Forestry Review; 2013, Vol. 15 Issue 1, p143 

    The article reviews the book, "Living with the Trees of Life: Towards the Transformation of Tropical Agriculture," by Roger Leakey.

  • Chlorothalonil Degradation under Anaerobic Conditions in an Agricultural Tropical Soil.
    Carlo-Rojas, Zarhelia; Bello-Mendoza, Ricardo; Figueroa, Miguel Salvador; Sokolov, Mikhail Y. // Water, Air & Soil Pollution; Jan2004, Vol. 151 Issue 1-4, p397 

    Chlorothalonil, a halogenated benzonitrile compound, is one of the most widely used fungicides in the world. Anaerobic microcosm assays were established to evaluate the combined effect of the initial content of carbon (6.3, 9.45 and 12.6 mg g-1), nitrogen (0.6, 1.8 and 3 mg g-1) and...

  • Climatic Impact of Vegetation Change in the Asian Tropical Region. Part I: Case of the Northern Hemisphere Summer.
    Mabuchi, Kazuo; Sato, Yasuo; Kida, Hideji // Journal of Climate; Feb2005, Vol. 18 Issue 3, p410 

    Several numerical simulations were performed, using a global climate model that includes a realistic land surface model, to investigate the impact of Asian tropical vegetation changes on the climate. The control simulation, under conditions of the actual vegetation, and three vegetation-change...

  • Causes of Forest Encroachment: An Analysis of Bangladesh.
    Iftekhar, M. S.; Hoque, A. K. F. // GeoJournal; Jan2005, Vol. 62 Issue 1/2, p95 

    Abstract Deforestation is a major cause of environmental degradation. Tropical countries with huge population pressure and widespread poverty are main frontier of deforestation. Bangladesh, being one the most densely populated country with diminishing tropical forestland, supports lowest per...

  • Living with the Trees of Life.
    Iftekhar, M. S.; Hoque, A. K. F. // CFA Newsletter; Mar2012, Issue 56, p10 

    The article reviews the book "Living with the Trees of Life: Towards the Transformation of Tropical Agriculture," by Roger Leakey.

  • Grass Roots of the Maned Wolf.
    Dietz, James M. // Natural History; Mar87, Vol. 96 Issue 3, p52 

    Presents the results of a two-year study on the long-legged maned wolf of the Central Highlands of Brazil. Social habits of the wolves; Feeding and mating behaviors; Relationship between the adult wolves and their young; Role of the wolf as an endangered species; Impact of the destruction of...

  • Effects of the Fungicide Benomyl on Earthworms in Laboratory Tests Under Tropical and Temperate Conditions.
    Römbke, Jörg; Garcia, Marcos; Scheffczyk, Adam // Archives of Environmental Contamination & Toxicology; Nov2007, Vol. 53 Issue 4, p590 

    Soil organisms play a crucial role in the terrestrial ecosystem. Plant protection products (PPPs) are known to affect soil organisms and might have negative impacts on soil functions influenced by these organisms. Little research has been performed to date on the impact of PPPs on tropical soil...

  • Recuperaclén estructural en bosques sucesionales andinos de Porce (Antioqia, Colombia).
    Yepes, Adriana P.; del Valle, Jorge I.; Jaramillo, Sandra L.; Orrego, Sergio A. // Revista de Biología Tropical; mar2010, Vol. 58 Issue 1, p427 

    Places subjected to natural or human disturbance can recover forest through an ecological process called secondary succession. Tropical succession is affected by factors such as disturbances, distance from original forest, surface configuration and local climate. These factors determine the...

  • Cover crops alter phosphorus soil fractions and organic matter accumulation in a Peruvian cacao agroforestry system.
    Hall, Hollie; Li, Yuncong; Comerford, Nicholas; Gardini, Enrique; Cernades, Luis; Baligar, Virupax; Popenoe, Hugh // Agroforestry Systems; Nov2010, Vol. 80 Issue 3, p447 

    In many tropical soils, excessive weathering of primary minerals confounded by intense agricultural production has resulted in the depletion of organic matter and plant available forms of phosphorus (P). Long-term growth of cover crops in tropical agroforestry systems have been shown to...

  • LOCAL GROWTH MODEL IN MODELLING THE CROWN DIAMETER OF PLANTATION-GROWN DRYOBALANOPS AROMATICA.
    Zuhaidi, Y. Ahmad // Journal of Tropical Forest Science; Jan2009, Vol. 21 Issue 1, p66 

    The importance of crown data in improving the construction of growth models for stand management has long been established for many temperate and a few tropical species. Growth models will assist in determining the allometric relationship between crown and tree diameter, optimum planting...

  • Sustentabilidad de los agroecosistemas de la microcuenca Paso de Ovejas 1, Veracruz, México.
    Candelaria-Martínez, Bernardino; Ruiz-Rosado, Octavio; Pérez-Hernández, Ponciano; Gallardo-López, Felipe; Vargas-Villamil, Luis; Martínez-Becerra, Ángel; Flota-Bañuelos, Carolina // Cuadernos de Desarrollo Rural; ene-jun2014, Vol. 11 Issue 73, p84 

    In this text it is set as a goal the development of an aggregate index for assessing sustainability in the three agroecosystem groups present in the watershed Paso de Ovejas 1 and it was hypothesized that the systems with presence of stockbreeding would have a greater sustainability due to a...

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