Twenty one accessions from the Avocado Germplasm Bank of CORPOICA, Palmira Research Station, were evaluated with two pathogenic strains of the oomycete, Phytophthora cinnamomi Rands. The objective of this project was to identify avocado accessions that could be potentially used as rootstocks as a cultural control strategy for preventing root rot disease. Disease progression was evaluated by using mycelium of the pathogen by cut-stem inoculation. The length and width of symptom progression were measured periodically. These data were used to calculate the area under the disease progression curve (AUDPC). A randomized complete block design (RCBD), with a factorial design of 3 x 21 in subdivided parcels (two strains of the pathogen, a control strain, and 21 avocado accessions) was used. Eight readings were taken per plant through time. Statistical analysis showed significant differences using the AUDPC for some avocado accessions. Tukey's test revealed five tolerance levels. Accession ‘NATU-001’ from Tumaco, Nariño, was identified as promising for its high tolerance and ‘CANO-008’ from Norcasia, Caldas, as a tolerant control accession had the second lowest value of AUDPC. Susceptible accessions used as control, e.g. ‘Hass’ variety and rootstock ‘Topa-Topa’, had very high susceptibility to the pathogen along with ‘QUIQUI-030’ accession from Quimbaya, Quindío, Colombia

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C. viridivittatus, citrus weevil distributed throughout the coffee maker and Andean region of Colombia. The larvae feed on roots and adults on leaves and flowers. On three citrus farms of the Valley were isolate and evaluated fungi and entompathogenic nematodes M. anisopliae and B. bassiana and Steinernema sp. and Heterorabditis sp. on larvae of C. viridivittatus 26, 36, 48 and 53 days of age. In 120 from 132 soil samples were found 21 fungi and none nematodes. Commercial B. bassiana B9 and B10 caused 100 % adult mortality in a time of 4.3 and 4 days. M. anisopliae M6 y M7 caused 94 % and 97 % of mortality to the 4.3 and 5 days. Steinernema sp. UNS09 caused 65 % of mortality on larvae of 48 and 53 days of age, seven days later. No were differences between UNS09 Steinernema and Heterorhabditis UNH16. Steinernema sp. UNS09 caused 85.7 % of mortality on 53 days larvae and 81.9 % and 81.1 % to larvae of 36 and 26 days. Heterorhabditis sp. UNH16 killed larvae of 36, 26 and 56 days was 79 %, 81 % and 75.4 % seven days later. In conclusion, fungi and nematodes can be an alternative to management of C. viridivittatus larvae. Entomopatógenos asociados a cítricos y su patogenicidad sobre Compsus viridivittatus Guérin-Méneville (Coleoptera: Curculionidae) Manejo integrado de plagas 293-305 Corpoica Cienc. Tecnol. Agropecu., Mosquera (Colombia), 16(2): ISSN 0122-8706 julio -diciembre / 2015 Entomopatógenos asociados a cítricos y su patogenicidad sobre Compsus viridivittatus Guérin-Méneville (Coleoptera: Curculionidae) Manejo integrado de plagas 293-305 julio -diciembre / 2015 Entomopatógenos asociados a cítricos y su patogenicidad sobre Compsus viridivittatus Guérin-Méneville (Coleoptera: Curculionidae) Manejo integrado de plagas 293-305Agradecimientos Los autores agradecen la colaboración de los empleados de cada una de las fincas donde se realizaron los muestreos.

Given the importance of soil as a supplier of nutrients and water for different ecosystems, understanding soil health and quality is necessary for its preservation. Microorganisms, due to their high abundance and their relationship with the degradation of organic matter and biogeochemical cycles, have a rapid response to environmental changes and thus are a discriminating factor that can be used as bioindicators of soil health. However, 97% of microorganisms are unculturable, leaving a gap in their taxonomic and functional knowledge. The development of metagenomics has reduced this problem through the direct extraction of DNA from soil, allowing the characterization of such non-culturable microorganisms, this technique can be considered one of the most impactful in soil health, given that it allows for an exploration of the biodiversity, the community structure, and the potential functions of the microbial communities from distinct environments. In addition to this, metagenomics have had an impact in different areas such as "OneHealth" or EcoGenomics allowing the formation of international projects. The aim of this paper is to show how metagenomics can be used as a technique to assess soil quality and health through the taxonomic and functional identifi cation of the microorganisms present in the soil.

La porcicultura de traspatio constituye una actividad fundamental para la seguridad alimentaria en gran parte de las áreas rurales de la Región Pacífica colombiana, dado que se basa en conocimientos ancestrales, involucra mano de obra familiar, es una actividad poco demandante de inversión económica al aprovechar recursos de la región, preserva al cerdo criollo que es un recurso zoogenético importante y sirve como fuente de ahorro para las familias de regiones apartadas del país. Sin embargo, las características del sistema productivo han sido poco documentadas. Con el objetivo de caracterizar los sistemas tradicionales de producción porcina en la Región Pacifica colombiana, se realizaron 97 encuestas que fueron clasificadas en cuatro grupos según las características del área geográfica: Chocó, Trópico bajo de Cauca y Nariño (NC), trópico alto de Cauca (Cauca) y trópico alto de Nariño (Nariño). En cada sitio de muestreo se obtuvo información socioeconómica referente a la vivienda, la familia y el productor, así como información técnica referente al sistema productivo. En las zonas rurales del Pacífico colombiano el número de cerdos criollos está disminuyendo progresivamente. Las principales causas de ello son el desplazamiento de cultivos de consumo humano por cultivos ilícitos, el desconocimiento de las propiedades del cerdo criollo, la falta de asistencia técnica y la falta de apoyo gubernamental para proyectos productivos. Existen además problemas de orden público y pérdida de vocación agropecuaria. Con todo esto la seguridad alimentaria de la zona está en riesgo.