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Production and loss of nitrate in Brachiaria humidicola and Panicum maximum in the Sinu river valleyProducción y pérdida de nitrato en Brachiaria humidicola y Panicum maximum en el valle del río Sinú
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2012)
Nitrogen loss, from the nitrification of nitrogen fertilizer, creates pollution through nitrous oxide emissions and nitrate leaching. The reports on Brachiaria as a biological nitrification inhibitor were evaluated to determine nitrate losses of Brachiaria humidicola CIAT 679 (indicator plant for biological nitrification inhibition) and Panicum maximum cv. tanzania (non-inhibiting plant). The incubated soil technique ...
Election of farmers in the adoption of soil management technologies in cotton production system and crop rotation in the warm Alto Magdalena valleyElección de los agricultores en la adopción de tecnologías de manejo de suelos en el sistema de producción de algodón y sus cultivos de rotación en el valle cálido del Alto Magdalena
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2012)
Agricultural research institutions have created technologies that aim to present alternative solutionsto the constraints of agricultural production through the generation of products and processes. However, in most cases, the adoption and impact of technology are unknown, presenting a constraint to the development of successful policies and technologies. This study analyzed the decision-making for soil management ...
Identification of site-specific management zones from combination of soil variablesIdentificación de zonas de manejo sitio-específico a partir de la combinación de variables de suelo
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2012)
Site-specific management demands the identification of homogeneous subfield regions within the field or management zones (ZM). However, due to the spatial variability of soil variables, determination of ZM from several variables, is often complex. Although the zonification or delimitation of MZ may be univariate, it is more appropriate to consider all variables simultaneously. Fuzzy k-means clustering (KM) and principal ...