Revistas: Recent submissions
Voici les éléments 751-760 de 3855
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Producción asociada de maíz y soya a diferentes densidades de siembra
(IICA, San José (Costa Rica), 1976-10-01)Se midió el efecto de la densidad de siembra en el rendimiento de grano de maíz y soja intercalados. Los cultivos puros correspondientes a la densidad básica (40.000 plantas/ha en maíz y 400.000 plantas/ha en soja) se ... -
Studies on the growth of Gossypium barbadense cottons in India, 1: Plant development and yield of seed cotton.
(IICA, San José (Costa Rica), 1976-10-01)Estudios sobre el crecimiento y desarrollo de tres cultivares de algodón Gossy-pium barbadense desarrollados localmente mostraron que los sembrios de verano del cultivar 'Sujata' (una reselección del cultivar egipcio ... -
Comportamento do cobre em solos cultivados com cana de acúcar
(Instituto Interamericano de Cooperación para la Agricultura (IICA), 1976-07)The copper added to the soils was preferentially adsrorbed by the pH dependent charges, wich in the Sao Paulo State soils are mainly due to organic matter constituents. A fraction of the added Cu ions forms very stable ... -
An assessment of the shade and ground cover influence on the mitigation of water‑driven soil erosion in a coffee agroforestry system
(2024-04-08)Coffee cultivation under agroforestry systems is one of the main agricultural activities in Central America, but climate change is putting its sustainability at risk. Rainfall erosivity has worsened, thus driving soil ... -
Evolution of Approaches on Water Resources Management and Integrated Watershed Management Planning: Complement, Synergies, and the Way Forward
Several approaches were used since the beginning of times to do water management. Relatively recent is the integrated water resources management (IWRM) proposed as an intent to bring a standard approach which is currently ... -
Efecto de tres fungicidas sobre la germinación de semilla infectada de frijol (Phaseolus vulgaris).
(IICA, San José (Costa Rica), 1976-10-01)Semilla de baja calidad de frijol (cv "Tuí") se trató con los fungicidas captan, thiram y benomyl a una dosis de 50, 75 y 50 mg del producto comercial por 40g de semilla, respectivamente. Esta semilla infectada con un alto ... -
Rural Technologies and Practices in Ancient Peru
(Springer Nature, 2025-02)This chapter will address two of the most representative technolog-ical works related to water management in Peru. The Cumbemayo Canal and the AMUNAS. The first one is a pre-Columbian hydraulic work located in the trop-ical ... -
Epidemiología de algunas enfermedades foliares de la yuca en diferentes sistemas de cultivo, 1: Mildiu polvoroso y roña
(IICA, San José (Costa Rica), 1976-10-01)A study was conducted at Turrialba, Costa Rica to determine the incidence, severity and progress curves of mildew (Oidrum manihotis P. Hem.) and scab (Sphaceloma sp.) in cassava cultivated under different systems. The ... -
The Effect of Crises on Fiscal and Political Re-Centralization
(SAGE Publications, 2024-03-27)Economic stability plays a crucial role in any fiscal and political decentralization process. In the face of financial and economic shocks, when revenues and expenditures are reduced, countries may decide to gather resources ... -
Natural selection for drought resistance in Pinus caribaea Morelet
(1976-10-01)Se ha especulado que Pinus caribea var caribea es más resistente a la sequía que P. caribea var hondurensis. La diferencia morfológica entre los arbolitos de las tres variedades de P. caribea, más la mayor supervivencia ...
