Control biológico del nemátodo lesionador Pratylenchus penetrans en el cultivo de maíz (Zea mays)

The data of the present investigation were collected from indexed scientific articles from different databases: Latindex, Scielo, Scopus, and Science. In addition to thesis and postgraduate of national and international universities. The information was collected between the months of July and August of 2019. The methods used were based on response analysis, which allowed obtaining results from online publications and written works, in order to determine the quality of it, and thus be able to take it into consideration. The type of symptomatology presented by this host phytonmatode, in the still green stems, can be spotted in the lower internodes, then the leaves lose color and the apex bends down, this nematode is housed in the plant until death, other symptoms they are necrotic lesions, which are confused by the farmers as a lack of nutrients that is why they are not treated correctly, thus limiting the development of roots and chlorosis. Given these symptoms, there is disease. In addition, in longitudinal cuts of the stem tissue disintegration or pink coloration can be observed. One of the indirect damages produced by the nematode known as Pratylenchus penetrans, which favors secondary Fusarium infections since the fungus enters through the galleries that remain in the roots; other pathogens that enter plants are Rhizoctonia and Pythium. The use of live microorganisms or controlling biological agents (ABC), also called bioregulators to reduce the incidence of nematodes. Enter the advantages of biological measures is that they are selective on a harmful organism, it is not poisonous. The most common biocontrollers used in the control of this nematode are the entomopathogenic fungus such as Purpureocillium lilacinus, the antagonistic fungus Trichoderma harzianum, and the bacterium Pasteuria penetrans. The amount of each of these biocontroller microorganisms per square meter is detailed below Pasteuria penetrans, 2000 spores / g soil and 80 million spores / m²; Trichoderma harzianum is 80 million spores / m²; Purpureocillium lilacinus is 80 million spores / m²

• Egile nagusia: Riquero Campuzano, Wimper Joel (author)
• Formatua: bachelorThesis
• Hizkuntza: spa
• Argitaratua: 2019
• Gaiak: Biocontroladores; Pratylenchus; Control biológico; Daño
• Sarrera elektronikoa: http://dspace.utb.edu.ec/handle/49000/6689