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El estudio de las aves neotropicales debería abarcar a las ciencias sociales
(2024-12-17)Las poblaciones de aves en el continente Americano y la región Caribe están en declive. Revertir esta tendencia y conservar a las aves de una manera efectiva es una responsabilidad que debe compartirse entre todas las ... -
The carbon footprint of livestock farms under conventional management and silvopastoral systems in Jalisco, Chiapas, and Campeche (Mexico)
(Frontiers, 2024-05-23)Livestock production is one of the most important agricultural sources of greenhouses gasses (GHG). Transforming the livestock sector is a critical task to mitigate the effects of climate change, and the implementation of ... -
Herencia de la altura de planta de trigo y de otros caracteres en condiciones de la costa central del Perú
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1975-04)Information on the hereditary control of plant height and other characters was obtained from a ´La Molina 60´ X ´Dwarf wheat´cross. Analysis of population means and frequency distribution for plant height suggests the ... -
Studies on the shootborer Hypsipyla grandella (Zeller) (Lep., Pyralidae), 27: Biological and chemical screening for the basis of resistance of Toona ciliata M.J. Roem. var. australis
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1975-04)La presente investigación fue dirigida a estudiar la base química de la inmunidad del cedro australiano (Toona cilata vav australis) al barrenador de las Meliaceas, Hypsipyla grandella. En plantaciones de campo se constató ... -
Surface water quality in Costa Rica: new initiatives and challenges
(IWA Publishing, 2024-11-04)Despite Costa Rica's reputation for being a leader in environmental policy and its thriving nature-based tourism industry, the nation has had poor surface water quality. Reasons for poor water quality include the lack of ... -
Inducción de mutaciones de color de semilla con metanosulfonato de etilo en algunas variedades de frijol común
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1975-04)Certain been varieties possessing characteristics of favorable yield and disease tolerance frequently are not used as cultivars due to the differential preference for certain seed-coat colors among consumers. Changes in ... -
Shade versus intensification: Trade-off or synergy for profitability in coffee agroforestry systems?
(Elsevier, 2023-12-11)This study assesses the economic viability of different coffee production strategies in Costa Rica and Guatemala, comparing intensive systems with shaded agroforestry approaches. Using a typology based on levels of ... -
Physiological studies on groundnut plants with boron toxicity, II: Effect on nitrogen metabolism
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1975-04)En cultivos en avena el efecto de un suministro de 10 ppm de boro sobre el metabolismo del nitrógeno se estudió en las hojas centrales del maní (cv ´TMV-2´ tipo compacto). Prácticamente no hubo cambio en los contenidos de ... -
Movimiento de nitrato en un suelo volcánico bajo diferentes regímenes de riego
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1975-04)The effect of the irrigation regime on the nitrate movement by mass flow was studied in a volcanic ash soil. Three nitrate treatments, (0, 80 and 160 Kg N/ha) and five irrigations heads (2, 4, 8, 12 and 16 cm) werw used ... -
Forest Cover and Dengue in Costa Rica: Panel Data Analysis of the Effects of Forest Cover Change on Hospital Admissions and Outbreaks
(Springer Nature Link, 2024-03-14)Approximately 3.9 billion people are at risk of infection with dengue fever, a group of viruses transmitted by mosquitoes (Halstead in Annu Rev Entomol 53:273–291, 2008. https://doi.org/10.1146/annurev.ento.53.103106.0933262008; ...
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