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Soil nematodes of the corn-soy rotation system and adjacent natural habitats of the Colombian well drained savannahs (Meta department)Nematodos del suelo en el sistema maíz–soya y en hábitats naturales adyacentes de la Altillanura colombiana (Meta)
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2008)
The structure of the soil nematode community in the Colombian well drained upland savannas cropped with rice, a corn soy bean rotation system, and natural adjacent habitats of native forest is described. In all, 240 soil samples were collected, 86% from cultivated areas and 14% from natural areas. Extractions were performed using an Oostenbrink elutriator and identifications with the help of key morphological, taking ...
Life cycle of Euchistus rufimanus (Stall) (Hemiptera : Pentatomidae) a corn pest in the eastern plains of ColombiaCiclo de vida de Euschistus rufimanus (Stall) (Hemiptera : Pentatomidae) plaga del maíz en los Llanos Orientales de Colombia
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2008)
Maize is an important crop in the well drained savannas in the Colombian eastern planes (known as ‘Llanos Orientales’) because of its economical potential in the balanced feed industry for livestock. However, insects like the brown stinkbug, Euschistus rufimanus (Hemiptera : Pentatomidae), is among the entomological problems that can seriously affect this crop. It causes malformation and decrease of leaf area index on ...
Evaluation of the use of passive modified atmospheres and low temperatures on the conservation of yellow pitahayaEvaluación del uso de atmósferas modificadas pasivas y temperaturas bajas en la conservación de pitaya amarilla (Selinicereus megalanthus Shuman)
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2008)
The absence of economically competitive alternative technologies for the preservation of pitahaya fruits has slowed the development of this fruit agrochain in the country. Colombia is one of the main pitahaya producers but with a minimal market share. Post harvest management deficiencies are reflected in a short shelf life, significant postharvest losses and a wide price fluctuation, which limits the agrochain growth ...
Effect of primary air preheating and moisture sugarcane bagasse during fixed bed combustionEfecto del precalentamiento del aire primario y la humedad del bagazo de caña de azúcar durante la combustión en lecho fijo
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2013)
Furnaces used to making jaggery have energy losses due to incomplete combustion of sugarcane bagasse and sensible heat in the flue gases. During jaggery production process, sugarcane bagasse is used as fuel, with mass fractions of humidity between 30% and 50%, which affect the combustion efficiency of a biomass in a fixed bed. Because the air preheating decreases the drying time, its implementation in many biomass ...
Lineaje-exclusion, a strategy for breeding rice with durable resistance to Pyricularia grisea Sacc. in ColombiaExclusión de linajes como estrategia para la obtención de resistencia durable en el arroz a Pyricularia grisea Sacc. en Colombia
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2003)
Rice blast has challenged plant breeders when they were searching for durable resistance in Colombia. Rapid resistance breakdowns were commonly observed in newly bred cultivars and they are attributed to frequent appearance of new pathotypes. Recent population studies of the rice blast pathosystem have shown that Pyricularia grisea in a given region, typically expresses a phylogenetic organization of distinct lineages ...
Molecular characterization of Bradyrhizobium japonicum J-01, J-96 and J-98, rep-PCR using protocolsCaracterización molecular de las cepas de Bradyrhizobium japonicum J-01, J-96 y J-98, mediante protocolos rep-PCR
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2013)
The cultivation of soybeans (Glycine max (L.) Merril), in oxisols of the Colombian Orinoco has restrictions due to high aluminum saturation and generally low CEC and OM, which affect the biological fixation of N and the normal growth of plants. In response to this problem, the plants are inoculated with different strains of Bradyrhizobium japonicum. The B. japonicum strains J-96 and J-98 are a highly effective choice ...
Productivity of the corn–grasses association in acid soils of the Colombian piedmont plains (Meta department)Productividad de la asociación maíz–pastos en suelos ácidos del Piedemonte Llanero colombiano
(Corporación Colombiana de Investigación Agropecuaria (Agrosavia), 2008)
In a degraded pasture of the Piedmont of the eastern plains of Colombia, the corn hybrid ‘Master’ was simultaneously established in association with the hybrid grasses Brachiaria cv. ‘Mulato 1’, Brachiaria brizantha cv. ‘Toledo’, andBrachiaria decumbens. Two N rates (100 and 200 kg·ha-1) were evaluated in the development and production of corn grain and grass biomass. N was applied to corn rows 15 and 35 days after the ...